Pumps - Milton Roy
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 cen...
Categories from Milton Roy (4)
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.
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The 31-89 is a PrimeRoyal® K GSD-type diaphragm liquid end with a 89 mm plunger in 316L stainless steel. 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.
$45,764.43
Available for Purchase
Subject to factory lead times
The Milroyal C (4-20) is a configuration option for Milton Roy's heavy-duty industrial metering pump. The Milroyal C is built for demanding chemical injection in refinery, petrochemical, and industrial service. It supports plunger sizes from small to large bore, manual or electronic ACC capacity control (including HART and explosion-proof options), and a wide range of wetted material and flange connection choices. Add this option code when building the complete pump model string.
Requires Quote
Available for Purchase
Subject to factory lead times
The 41-20 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.
$38,166.28
Available for Purchase
Subject to factory lead times
The 41-25 is a PrimeRoyal® Q packed-plunger liquid end for 25 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.
$35,635.25
Available for Purchase
Subject to factory lead times
The 41-28 is a PrimeRoyal® Q packed-plunger liquid end for 28 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.
$40,798.75
Available for Purchase
Subject to factory lead times
The 41-32 is a PrimeRoyal® Q packed-plunger liquid end for 32 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.
$42,114.48
Available for Purchase
Subject to factory lead times
The 41-40 is a PrimeRoyal® R packed-plunger liquid end for 40 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.
$52,057.00
Available for Purchase
Subject to factory lead times
This PrimeRoyal® K liquid end (43-08) is configured with a 08 mm plunger in 316L stainless steel. 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.
$14,836.19
Available for Purchase
Subject to factory lead times
Built for critical process injection, the 43-10 (PrimeRoyal® K) uses a 10 mm plunger in 316L stainless steel. 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.
$15,013.71
Available for Purchase
Subject to factory lead times
Built for critical process injection, the 43-12 (PrimeRoyal® K) uses a 12 mm plunger in 316L stainless steel. 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.
$15,246.02
Available for Purchase
Subject to factory lead times
The 43-16 is a PrimeRoyal® L PTFE GSD-type diaphragm liquid end with a 16 mm plunger in Alloy 20. 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.
$20,488.64
Available for Purchase
Subject to factory lead times
The 43-20 is a PrimeRoyal® N PTFE HPD diaphragm liquid end for a 20 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.
$33,689.55
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (43-25) covers 25 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.
$48,526.75
Available for Purchase
Subject to factory lead times
The 43-28 is a PrimeRoyal® R packed-plunger liquid end for 28 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.
$49,134.40
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (43-32) covers 32 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.
$49,752.20
Available for Purchase
Subject to factory lead times
The 50503-15 is a 15 m (49.2 ft) extension cable for PROTEUS™ I/O cordsets. Extends 5 or 6-pin PROTEUS™ cordset connections — useful when the pump is mounted away from the control panel or junction box. Designed for use with the PROTEUS™ enhanced control wiring for digital inputs, analog outputs, or communications connections. Purchase one cable per run length needed; multiple cables may not be daisy-chained.
$326.06$361.00
Available for Purchase
Subject to factory lead times
The 50503-6 is a 6 m (19.7 ft) extension cable for PROTEUS™ I/O cordsets. Extends 5 or 6-pin PROTEUS™ cordset connections — useful when the pump is mounted away from the control panel or junction box. Designed for use with the PROTEUS™ enhanced control wiring for digital inputs, analog outputs, or communications connections. Purchase one cable per run length needed; multiple cables may not be daisy-chained.
$191.48$212.00
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (51-100) covers 100 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.
$153,161.17
Available for Purchase
Subject to factory lead times
Manufactured in France, the 51-105 (PrimeRoyal® R) is a large-bore packed-plunger liquid end designed for 105 mm plunger diameter. 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.
$154,997.30
Available for Purchase
Subject to factory lead times
The 51-110 is a PrimeRoyal® R packed-plunger liquid end for 110 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.
$156,777.64
Available for Purchase
Subject to factory lead times
The 51-115 is a PrimeRoyal® R packed-plunger liquid end for 115 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.
$171,603.68
Available for Purchase
Subject to factory lead times
The 51-120 is a PrimeRoyal® R packed-plunger liquid end for 120 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.
$171,603.68
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (51-125) covers 125 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.
$170,218.97
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (51-130) covers 130 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.
$185,047.04
Available for Purchase
Subject to factory lead times
The 31-89 is a PrimeRoyal® K GSD-type diaphragm liquid end with a 89 mm plunger in 316L stainless steel. 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.
$45,764.43
Available for Purchase
Subject to factory lead times
The Milroyal C (4-20) is a configuration option for Milton Roy's heavy-duty industrial metering pump. The Milroyal C is built for demanding chemical injection in refinery, petrochemical, and industrial service. It supports plunger sizes from small to large bore, manual or electronic ACC capacity control (including HART and explosion-proof options), and a wide range of wetted material and flange connection choices. Add this option code when building the complete pump model string.
Requires Quote
Available for Purchase
Subject to factory lead times
The 41-20 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.
$38,166.28
Available for Purchase
Subject to factory lead times
The 41-25 is a PrimeRoyal® Q packed-plunger liquid end for 25 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.
$35,635.25
Available for Purchase
Subject to factory lead times
The 41-28 is a PrimeRoyal® Q packed-plunger liquid end for 28 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.
$40,798.75
Available for Purchase
Subject to factory lead times
The 41-32 is a PrimeRoyal® Q packed-plunger liquid end for 32 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.
$42,114.48
Available for Purchase
Subject to factory lead times
The 41-40 is a PrimeRoyal® R packed-plunger liquid end for 40 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.
$52,057.00
Available for Purchase
Subject to factory lead times
This PrimeRoyal® K liquid end (43-08) is configured with a 08 mm plunger in 316L stainless steel. 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.
$14,836.19
Available for Purchase
Subject to factory lead times
Built for critical process injection, the 43-10 (PrimeRoyal® K) uses a 10 mm plunger in 316L stainless steel. 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.
$15,013.71
Available for Purchase
Subject to factory lead times
Built for critical process injection, the 43-12 (PrimeRoyal® K) uses a 12 mm plunger in 316L stainless steel. 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.
$15,246.02
Available for Purchase
Subject to factory lead times
The 43-16 is a PrimeRoyal® L PTFE GSD-type diaphragm liquid end with a 16 mm plunger in Alloy 20. 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.
$20,488.64
Available for Purchase
Subject to factory lead times
The 43-20 is a PrimeRoyal® N PTFE HPD diaphragm liquid end for a 20 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.
$33,689.55
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (43-25) covers 25 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.
$48,526.75
Available for Purchase
Subject to factory lead times
The 43-28 is a PrimeRoyal® R packed-plunger liquid end for 28 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.
$49,134.40
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (43-32) covers 32 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.
$49,752.20
Available for Purchase
Subject to factory lead times
The 50503-15 is a 15 m (49.2 ft) extension cable for PROTEUS™ I/O cordsets. Extends 5 or 6-pin PROTEUS™ cordset connections — useful when the pump is mounted away from the control panel or junction box. Designed for use with the PROTEUS™ enhanced control wiring for digital inputs, analog outputs, or communications connections. Purchase one cable per run length needed; multiple cables may not be daisy-chained.
$326.06$361.00
Available for Purchase
Subject to factory lead times
The 50503-6 is a 6 m (19.7 ft) extension cable for PROTEUS™ I/O cordsets. Extends 5 or 6-pin PROTEUS™ cordset connections — useful when the pump is mounted away from the control panel or junction box. Designed for use with the PROTEUS™ enhanced control wiring for digital inputs, analog outputs, or communications connections. Purchase one cable per run length needed; multiple cables may not be daisy-chained.
$191.48$212.00
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (51-100) covers 100 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.
$153,161.17
Available for Purchase
Subject to factory lead times
Manufactured in France, the 51-105 (PrimeRoyal® R) is a large-bore packed-plunger liquid end designed for 105 mm plunger diameter. 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.
$154,997.30
Available for Purchase
Subject to factory lead times
The 51-110 is a PrimeRoyal® R packed-plunger liquid end for 110 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.
$156,777.64
Available for Purchase
Subject to factory lead times
The 51-115 is a PrimeRoyal® R packed-plunger liquid end for 115 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.
$171,603.68
Available for Purchase
Subject to factory lead times
The 51-120 is a PrimeRoyal® R packed-plunger liquid end for 120 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.
$171,603.68
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (51-125) covers 125 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.
$170,218.97
Available for Purchase
Subject to factory lead times
This PrimeRoyal® R liquid end (51-130) covers 130 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.
$185,047.04
Available for Purchase
Subject to factory lead times
FAQS
- Flow (GPM) + total dynamic head (TDH), fluid details (chemistry, temp, solids/viscosity), suction conditions (NPSHa), desired materials, seal type, driver/voltage, connection sizes, and duty cycle.
- The total head the pump must overcome: static lift + discharge head + pressure requirements + friction losses in pipe/fittings/valves/filters, adjusted for fluid density.
- Centrifugal for higher flow/low–moderate viscosity and smoother operation; positive displacement for high viscosity, accurate metering, higher pressures, or when flow must stay steady as pressure changes.
- ANSI process pumps are for clean/process fluids and standard chemical-duty applications; self-priming trash pumps are built to handle air entrainment and larger solids for dewatering/wastewater.
- Match wetted materials to the fluid chemistry, temperature, and abrasiveness (e.g., 316 SS for corrosion resistance; ductile iron for general service; hardened materials/coatings for abrasion).
- Often yes on the discharge side to control flow (within limits), but avoid deadheading too long (heat buildup); never throttle suction, use a valve only for isolation.
- VFD speed control is usually most efficient; throttling works but wastes energy; bypass recirculation may be needed to maintain minimum flow.
- Use viscosity-corrected curves or consider positive displacement; expect reduced flow/increased power and ensure suction piping supports high-viscosity feeding.
- Define solids size, concentration, hardness, and shape; choose solids-handling hydraulics, slower speeds, abrasion-resistant materials, and appropriate clearances.
- Select compatible metallurgy/coatings, control pH/chemistry, reduce velocity in corrosive service, manage solids, and use wear parts designed for abrasion.
- Alignment, lubrication, seal support/flush checks, strainer cleaning, vibration/temperature monitoring, and verifying operation near BEP and above minimum flow.
- Best Efficiency Point is where the pump runs most efficiently with lowest vibration; aim to operate near BEP to improve seal/bearing life and reduce energy cost.