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 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.
$23.33
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.
$12,242.37
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.
$21,752.39
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.
$23,373.01
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.
$23,373.01
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.
$25,470.52
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.
$25,470.52
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.
$18,154.00
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.
$41,349.47
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.
$18,154.00
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.
$11,842.89
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.
$12,250.62
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.
$23.33
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.
$12,242.37
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.
$21,752.39
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.
$23,373.01
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.
$23,373.01
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.
$25,470.52
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.
$25,470.52
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.
$18,154.00
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.
$41,349.47
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.
$18,154.00
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.
$11,842.89
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.
$12,250.62
Available for Purchase
Subject to factory lead times