Categories from Milton Roy (5)
Motor Driven Metering Pumps
Motor-driven metering pumps deliver precise, reliable chemical dosing for demanding industrial applications, combining high flow capacity with consistent accuracy. Ideal for water treatment, chemical processing, and manufacturing, these pumps offer adjustable stroke length and motor speed to handle a wide range of fluid viscosities and pressures. Their robust construction ensures long-term durability, while optional features like integrated controllers and safety valves enhance process control and system protection.
Pump Parts & Servicing
Pump Parts & Servicing products involves the maintenance, repair, and replacement of key pump components to ensure optimal performance and longevity. Regular servicing helps prevent breakdowns, reduces downtime, and extends the life of pumps in various industrial applications. It provides efficient operation, minimizes costly repairs, and maintains consistent fluid handling performance.
Pump Repair
Centro carries a complete selection of pump repair products available to purchase online. We have everything you need to keep your pumps in top working condition, including gaskets, o-rings, seals, and more. We also offer a wide variety of pump maintenance and repair services, so you can rest assured that your equipment will always be in great shape. Whether you need a simple tune-up or a complete overhaul, our team of experts is here to help. Learn more about the expertise of our Pump and Seal Division.
Electric Motors
Electric motors for pump control system applications deliver reliable, energy-efficient performance in demanding industrial environments, powering centrifugal, positive displacement, and specialty pumps with precision and durability. Engineered for continuous-duty operation, these motors are available in TEFC, explosion-proof, and washdown enclosures to meet environmental and safety requirements. Paired with VFDs or soft starters, they enable accurate flow regulation, reduced energy consumption, and seamless integration into automated control systems across industries such as water treatment, chemical processing, and manufacturing.
Pumps
Industrial pumps move liquids from one place to another, whether you’re handling water, chemicals, or thick, heavy fluids. Most pumps fall into one of two main categories: positive-displacement pumps and centrifugal pumps (also called non-positive-displacement pumps).
Positive-displacement pumps move a set amount of liquid each cycle using seals or valves. They’re the go-to choice for thicker, high-viscosity materials—like slurries, oils, or adhesives—because they deliver a steady, reliable flow. Centrifugal pumps use rotating impellers to keep liquid moving, making them ideal for high-volume jobs like circulating water, solvents, chemicals, and light oils.
At Centro, we carry a full range of industrial pumps to match almost any process or application. Our selection includes air-operated double diaphragm (AOD) pumps, lobe pumps, submersible pumps, hose/peristaltic pumps, metering pumps, progressive cavity pumps, sealless mag-drive pumps, hydraulic pumps, and a variety of pump control systems.
Whether you’re looking for precision metering, chemical compatibility, or rugged performance, our team can help you find the right pump for the job. Browse our pump categories to compare options, or call Centro for expert guidance on selecting the best pump for your operation.
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The 10342-10 is a 4-pin, 2 m cordset for PROTEUS™ enhanced control analog input (J3 connector). This factory-assembled cordset connects the PROTEUS™ pump's I/O terminals to external process signals, control panels, or communications networks. Pre-wired and terminated to minimize field wiring time. One cordset is included with the enhanced control drive; additional cordsets are needed when using multiple I/O channels or communications options simultaneously.
$20.77$23.00
Available for Purchase
Subject to factory lead times
Configured for 8 mm plunger service in 316L stainless steel, the 11-08 is a PrimeRoyal® H HPD liquid end for critical process metering. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$12,428.92
Available for Purchase
Subject to factory lead times
Configured for 10 mm plunger service in 316L stainless steel, the 11-10 is a PrimeRoyal® H HPD liquid end for critical process metering. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$14,079.41
Available for Purchase
Subject to factory lead times
This PrimeRoyal® H liquid end (11-12) uses a 12 mm plunger in 316L stainless steel construction. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$14,079.41
Available for Purchase
Subject to factory lead times
This PrimeRoyal® H liquid end (11-14) uses a 14 mm plunger in 316L stainless steel construction. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$17,433.15
Available for Purchase
Subject to factory lead times
This PrimeRoyal® H liquid end (11-16) uses a 16 mm plunger in 316L stainless steel construction. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$17,433.15
Available for Purchase
Subject to factory lead times
The 11-18 is a PrimeRoyal® H metallic diaphragm liquid end with a 18 mm plunger in 316L stainless steel. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$22,000.16
Available for Purchase
Subject to factory lead times
Configured for 20 mm plunger service in 316L stainless steel, the 11-20 is a PrimeRoyal® H HPD liquid end for critical process metering. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$22,000.16
Available for Purchase
Subject to factory lead times
Configured for 22 mm plunger service in 316L stainless steel, the 11-22 is a PrimeRoyal® H HPD liquid end for critical process metering. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$34,828.77
Available for Purchase
Subject to factory lead times
The 11-25 is a PrimeRoyal® H metallic diaphragm liquid end with a 25 mm plunger in 316L stainless steel. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$34,828.77
Available for Purchase
Subject to factory lead times
Built for critical process injection, the 21-10 (PrimeRoyal® K) uses a 10 mm plunger in 316L stainless steel (high-pressure G2 configuration). The PTFE/NBR GSD diaphragm provides full process isolation while handling the pressure cycles of high-duty metering service. Check valve styles — single ball, double ball, hard 440C, slurry, and viscous-liquid spring-loaded — are selected at order time to match fluid characteristics. Suction and discharge connections are available in threaded standard, ANSI Class 150, 300, 600, or 1500 flanges in 316L SS or Alloy 20. Base price covers the liquid end body; gear set, motor mount, capacity control, and oil options are priced separately.
$12,022.13
Available for Purchase
Subject to factory lead times
This PrimeRoyal® K liquid end (21-16) is configured with a 16 mm plunger in 316L stainless steel (high-pressure G2 configuration). The PTFE/NBR GSD diaphragm provides full process isolation while handling the pressure cycles of high-duty metering service. Check valve styles — single ball, double ball, hard 440C, slurry, and viscous-liquid spring-loaded — are selected at order time to match fluid characteristics. Suction and discharge connections are available in threaded standard, ANSI Class 150, 300, 600, or 1500 flanges in 316L SS or Alloy 20. Base price covers the liquid end body; gear set, motor mount, capacity control, and oil options are priced separately.
$12,437.03
Available for Purchase
Subject to factory lead times
This PrimeRoyal® K liquid end (21-19) is configured with a 19 mm plunger in 316L stainless steel (high-pressure G2 configuration). The PTFE/NBR GSD diaphragm provides full process isolation while handling the pressure cycles of high-duty metering service. Check valve styles — single ball, double ball, hard 440C, slurry, and viscous-liquid spring-loaded — are selected at order time to match fluid characteristics. Suction and discharge connections are available in threaded standard, ANSI Class 150, 300, 600, or 1500 flanges in 316L SS or Alloy 20. Base price covers the liquid end body; gear set, motor mount, capacity control, and oil options are priced separately.
$12,437.03
Available for Purchase
Subject to factory lead times
Built for critical process injection, the 21-25 (PrimeRoyal® K) uses a 25 mm plunger in 316L stainless steel (high-pressure G2 configuration). The PTFE/NBR GSD diaphragm provides full process isolation while handling the pressure cycles of high-duty metering service. Check valve styles — single ball, double ball, hard 440C, slurry, and viscous-liquid spring-loaded — are selected at order time to match fluid characteristics. Suction and discharge connections are available in threaded standard, ANSI Class 150, 300, 600, or 1500 flanges in 316L SS or Alloy 20. Base price covers the liquid end body; gear set, motor mount, capacity control, and oil options are priced separately.
$12,852.95
Available for Purchase
Subject to factory lead times
The 21-32 is a PrimeRoyal® N PTFE HPD diaphragm liquid end for a 32 mm plunger in 316L stainless steel. Designed for large-bore, high-flow critical process injection, the PrimeRoyal N HPD keeps process fluid contained behind the PTFE diaphragm at all times. Available with diaphragm rupture detection — pressure switch (NEMA 4 or explosion-proof), gauge, combined gauge and switch, or transmitter manifold — for process safety compliance. Suction and discharge connections range from standard threaded to ANSI flanges through Class 1500 in stainless or Alloy 20. Bernard actuator capacity control options (IP68 and explosion-proof) are available for remote modulating control. Gear set, motor mount, and oil options are priced separately.
$24,972.47
Available for Purchase
Subject to factory lead times
The 21-40 is a PrimeRoyal® N PTFE HPD diaphragm liquid end for a 40 mm plunger in 316L stainless steel. Designed for large-bore, high-flow critical process injection, the PrimeRoyal N HPD keeps process fluid contained behind the PTFE diaphragm at all times. Available with diaphragm rupture detection — pressure switch (NEMA 4 or explosion-proof), gauge, combined gauge and switch, or transmitter manifold — for process safety compliance. Suction and discharge connections range from standard threaded to ANSI flanges through Class 1500 in stainless or Alloy 20. Bernard actuator capacity control options (IP68 and explosion-proof) are available for remote modulating control. Gear set, motor mount, and oil options are priced separately.
$24,972.47
Available for Purchase
Subject to factory lead times
The 21-45 is a PrimeRoyal® R packed-plunger liquid end for 44.5 mm plunger service, manufactured in France. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$41,797.97
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (21-51) covers 50.8 mm plunger diameter in the high-pressure packed-plunger configuration. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$41,953.18
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (21-57) covers 57.2 mm plunger diameter in the high-pressure packed-plunger configuration. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$41,953.18
Available for Purchase
Subject to factory lead times
The 21-63 is a PrimeRoyal® R packed-plunger liquid end for 63.5 mm plunger service, manufactured in France. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$41,953.18
Available for Purchase
Subject to factory lead times
The 23-19 is a PrimeRoyal® L PTFE GSD-type diaphragm liquid end with a 19 mm plunger in PVC. The PTFE diaphragm offers broader chemical compatibility than NBR-based options, making the PrimeRoyal L the preferred choice when process fluids are incompatible with elastomers. Full process containment is maintained through the diaphragm, keeping the drive oil clean and eliminating packing leakage. Connection options include standard threaded (VM/VF) as well as ANSI flanged from Class 150 through Class 1500 in stainless or Alloy 20. Gear set, motor, capacity control, and oil selections are priced separately on the PrimeRoyal L pricing page.
$16,578.99
Available for Purchase
Subject to factory lead times
The 23-20 is a PrimeRoyal® Q packed-plunger liquid end for 20 mm plunger diameter service. The packed-plunger design excels at high-pressure chemical injection in oil & gas, refinery, and specialty chemical applications where diaphragm designs may be limited by pressure or temperature. P4 head design accommodates plunger diameters from 20 to 32 mm. Check valve options include single-ball, double-ball, flat valve, hard ball-and-seat (LD), slurry, H₂SO₄, viscous, and anti-siphon configurations. Wetted O-ring material is selected between PTFE, Viton, or Nitrile. Connection options and capacity control add-ons are priced separately.
$78,307.67
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (23-22) covers 22 mm plunger diameter in the high-pressure packed-plunger configuration. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$120,557.06
Available for Purchase
Subject to factory lead times
The 23-23 is a PrimeRoyal® Q packed-plunger liquid end for 23 mm plunger diameter service. The packed-plunger design excels at high-pressure chemical injection in oil & gas, refinery, and specialty chemical applications where diaphragm designs may be limited by pressure or temperature. P4 head design accommodates plunger diameters from 20 to 32 mm. Check valve options include single-ball, double-ball, flat valve, hard ball-and-seat (LD), slurry, H₂SO₄, viscous, and anti-siphon configurations. Wetted O-ring material is selected between PTFE, Viton, or Nitrile. Connection options and capacity control add-ons are priced separately.
$78,966.04
Available for Purchase
Subject to factory lead times
The 10342-10 is a 4-pin, 2 m cordset for PROTEUS™ enhanced control analog input (J3 connector). This factory-assembled cordset connects the PROTEUS™ pump's I/O terminals to external process signals, control panels, or communications networks. Pre-wired and terminated to minimize field wiring time. One cordset is included with the enhanced control drive; additional cordsets are needed when using multiple I/O channels or communications options simultaneously.
$20.77$23.00
Available for Purchase
Subject to factory lead times
Configured for 8 mm plunger service in 316L stainless steel, the 11-08 is a PrimeRoyal® H HPD liquid end for critical process metering. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$12,428.92
Available for Purchase
Subject to factory lead times
Configured for 10 mm plunger service in 316L stainless steel, the 11-10 is a PrimeRoyal® H HPD liquid end for critical process metering. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$14,079.41
Available for Purchase
Subject to factory lead times
This PrimeRoyal® H liquid end (11-12) uses a 12 mm plunger in 316L stainless steel construction. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$14,079.41
Available for Purchase
Subject to factory lead times
This PrimeRoyal® H liquid end (11-14) uses a 14 mm plunger in 316L stainless steel construction. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$17,433.15
Available for Purchase
Subject to factory lead times
This PrimeRoyal® H liquid end (11-16) uses a 16 mm plunger in 316L stainless steel construction. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$17,433.15
Available for Purchase
Subject to factory lead times
The 11-18 is a PrimeRoyal® H metallic diaphragm liquid end with a 18 mm plunger in 316L stainless steel. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$22,000.16
Available for Purchase
Subject to factory lead times
Configured for 20 mm plunger service in 316L stainless steel, the 11-20 is a PrimeRoyal® H HPD liquid end for critical process metering. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$22,000.16
Available for Purchase
Subject to factory lead times
Configured for 22 mm plunger service in 316L stainless steel, the 11-22 is a PrimeRoyal® H HPD liquid end for critical process metering. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$34,828.77
Available for Purchase
Subject to factory lead times
The 11-25 is a PrimeRoyal® H metallic diaphragm liquid end with a 25 mm plunger in 316L stainless steel. The High Performance Diaphragm (HPD) design keeps the process fluid completely separated from the drive, making it suitable for toxic, corrosive, or high-value process streams. Suction and discharge connections are available threaded (male or female) or in ANSI flanged configurations from Class 150 to Class 1500. Pairs with standard gear ratios of 8:1, 10:1, 12.5:1, 14.5:1, and 25:1 to achieve the required strokes per minute. Compatible with all standard capacity control and drive options in the PrimeRoyal H product line.
$34,828.77
Available for Purchase
Subject to factory lead times
Built for critical process injection, the 21-10 (PrimeRoyal® K) uses a 10 mm plunger in 316L stainless steel (high-pressure G2 configuration). The PTFE/NBR GSD diaphragm provides full process isolation while handling the pressure cycles of high-duty metering service. Check valve styles — single ball, double ball, hard 440C, slurry, and viscous-liquid spring-loaded — are selected at order time to match fluid characteristics. Suction and discharge connections are available in threaded standard, ANSI Class 150, 300, 600, or 1500 flanges in 316L SS or Alloy 20. Base price covers the liquid end body; gear set, motor mount, capacity control, and oil options are priced separately.
$12,022.13
Available for Purchase
Subject to factory lead times
This PrimeRoyal® K liquid end (21-16) is configured with a 16 mm plunger in 316L stainless steel (high-pressure G2 configuration). The PTFE/NBR GSD diaphragm provides full process isolation while handling the pressure cycles of high-duty metering service. Check valve styles — single ball, double ball, hard 440C, slurry, and viscous-liquid spring-loaded — are selected at order time to match fluid characteristics. Suction and discharge connections are available in threaded standard, ANSI Class 150, 300, 600, or 1500 flanges in 316L SS or Alloy 20. Base price covers the liquid end body; gear set, motor mount, capacity control, and oil options are priced separately.
$12,437.03
Available for Purchase
Subject to factory lead times
This PrimeRoyal® K liquid end (21-19) is configured with a 19 mm plunger in 316L stainless steel (high-pressure G2 configuration). The PTFE/NBR GSD diaphragm provides full process isolation while handling the pressure cycles of high-duty metering service. Check valve styles — single ball, double ball, hard 440C, slurry, and viscous-liquid spring-loaded — are selected at order time to match fluid characteristics. Suction and discharge connections are available in threaded standard, ANSI Class 150, 300, 600, or 1500 flanges in 316L SS or Alloy 20. Base price covers the liquid end body; gear set, motor mount, capacity control, and oil options are priced separately.
$12,437.03
Available for Purchase
Subject to factory lead times
Built for critical process injection, the 21-25 (PrimeRoyal® K) uses a 25 mm plunger in 316L stainless steel (high-pressure G2 configuration). The PTFE/NBR GSD diaphragm provides full process isolation while handling the pressure cycles of high-duty metering service. Check valve styles — single ball, double ball, hard 440C, slurry, and viscous-liquid spring-loaded — are selected at order time to match fluid characteristics. Suction and discharge connections are available in threaded standard, ANSI Class 150, 300, 600, or 1500 flanges in 316L SS or Alloy 20. Base price covers the liquid end body; gear set, motor mount, capacity control, and oil options are priced separately.
$12,852.95
Available for Purchase
Subject to factory lead times
The 21-32 is a PrimeRoyal® N PTFE HPD diaphragm liquid end for a 32 mm plunger in 316L stainless steel. Designed for large-bore, high-flow critical process injection, the PrimeRoyal N HPD keeps process fluid contained behind the PTFE diaphragm at all times. Available with diaphragm rupture detection — pressure switch (NEMA 4 or explosion-proof), gauge, combined gauge and switch, or transmitter manifold — for process safety compliance. Suction and discharge connections range from standard threaded to ANSI flanges through Class 1500 in stainless or Alloy 20. Bernard actuator capacity control options (IP68 and explosion-proof) are available for remote modulating control. Gear set, motor mount, and oil options are priced separately.
$24,972.47
Available for Purchase
Subject to factory lead times
The 21-40 is a PrimeRoyal® N PTFE HPD diaphragm liquid end for a 40 mm plunger in 316L stainless steel. Designed for large-bore, high-flow critical process injection, the PrimeRoyal N HPD keeps process fluid contained behind the PTFE diaphragm at all times. Available with diaphragm rupture detection — pressure switch (NEMA 4 or explosion-proof), gauge, combined gauge and switch, or transmitter manifold — for process safety compliance. Suction and discharge connections range from standard threaded to ANSI flanges through Class 1500 in stainless or Alloy 20. Bernard actuator capacity control options (IP68 and explosion-proof) are available for remote modulating control. Gear set, motor mount, and oil options are priced separately.
$24,972.47
Available for Purchase
Subject to factory lead times
The 21-45 is a PrimeRoyal® R packed-plunger liquid end for 44.5 mm plunger service, manufactured in France. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$41,797.97
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (21-51) covers 50.8 mm plunger diameter in the high-pressure packed-plunger configuration. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$41,953.18
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (21-57) covers 57.2 mm plunger diameter in the high-pressure packed-plunger configuration. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$41,953.18
Available for Purchase
Subject to factory lead times
The 21-63 is a PrimeRoyal® R packed-plunger liquid end for 63.5 mm plunger service, manufactured in France. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$41,953.18
Available for Purchase
Subject to factory lead times
The 23-19 is a PrimeRoyal® L PTFE GSD-type diaphragm liquid end with a 19 mm plunger in PVC. The PTFE diaphragm offers broader chemical compatibility than NBR-based options, making the PrimeRoyal L the preferred choice when process fluids are incompatible with elastomers. Full process containment is maintained through the diaphragm, keeping the drive oil clean and eliminating packing leakage. Connection options include standard threaded (VM/VF) as well as ANSI flanged from Class 150 through Class 1500 in stainless or Alloy 20. Gear set, motor, capacity control, and oil selections are priced separately on the PrimeRoyal L pricing page.
$16,578.99
Available for Purchase
Subject to factory lead times
The 23-20 is a PrimeRoyal® Q packed-plunger liquid end for 20 mm plunger diameter service. The packed-plunger design excels at high-pressure chemical injection in oil & gas, refinery, and specialty chemical applications where diaphragm designs may be limited by pressure or temperature. P4 head design accommodates plunger diameters from 20 to 32 mm. Check valve options include single-ball, double-ball, flat valve, hard ball-and-seat (LD), slurry, H₂SO₄, viscous, and anti-siphon configurations. Wetted O-ring material is selected between PTFE, Viton, or Nitrile. Connection options and capacity control add-ons are priced separately.
$78,307.67
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (23-22) covers 22 mm plunger diameter in the high-pressure packed-plunger configuration. The PrimeRoyal R excels in oil & gas injection, pipeline dosing, and petrochemical service where very high pressures and large flow volumes are required. Metallic construction throughout ensures long service life in aggressive process environments. Check valve, connection type, capacity control, and motor options are selected separately to complete the configuration for the specific application. RPM maintenance kits are available to cover all scheduled-interval service requirements.
$120,557.06
Available for Purchase
Subject to factory lead times
The 23-23 is a PrimeRoyal® Q packed-plunger liquid end for 23 mm plunger diameter service. The packed-plunger design excels at high-pressure chemical injection in oil & gas, refinery, and specialty chemical applications where diaphragm designs may be limited by pressure or temperature. P4 head design accommodates plunger diameters from 20 to 32 mm. Check valve options include single-ball, double-ball, flat valve, hard ball-and-seat (LD), slurry, H₂SO₄, viscous, and anti-siphon configurations. Wetted O-ring material is selected between PTFE, Viton, or Nitrile. Connection options and capacity control add-ons are priced separately.
$78,966.04
Available for Purchase
Subject to factory lead times