Durability and Precision

The mRoy Series XB metering pump delivers precise, controlled-volume chemical dosing with a hydraulically-actuated PTFE diaphragm. Compact yet powerful, it ensures reliable, year-round performance with minimal maintenance. It's built to global standards and offers decades of durability for a wide range of fluid applications.

Material (liquid end): 316SS / PVC
Pressure max: 1,523 psi / 105 bar (both metallic and plastic liquid end)
Flow max: 82 gph / 310 lph (both metallic and plastic liquid end)
Multiplex: Duplex only
Flow variation control: Manual / Remote
Certifications: API 675, EC, ATEX, IECEX

This product is not available in the US and India.

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Pressure Max - Metallic Liquid End

105

Bar

Pressure Max - Plastic Liquid End

105

Bar

Flow Max - Plastic Liquid End

310

LPH

Flow Max - Metallic Liquid End

310

LPH

Simplified Commissioning

Liquid end bleed system enables quick, easy startup and reduces setup complexity.

Smooth Drive Mechanism

Worm and pinion drive in an oil bath ensures quiet, efficient operation and long service life.

Rugged Construction

Dust-tight cast iron housing protects components and enhances durability in harsh environments.

Precision Flow Control

Micrometer adjustment allows accurate and repeatable dosing for critical processes.

Built-In Pressure Protection

Internal hydraulic relief valve prevents overpressure and safeguards system integrity.

Reliable Valve Performance

High-performance cartridge-type check valves ensure tight sealing and consistent operation.

Certified Compliance

Meets API 675 standards and ATEX certification for safe, regulated industrial use.

Wide Application Range

Ideal for chemical injection across water treatment, oil & gas, power, pharma, agriculture, and more.

mROY XB - Plastic liquid end

Flow at 3 bar (l/h)	Flow at max. pressure (l/h)	Max. pressure (bar)	Stroke speed (spm)	Plunger Ø (mm)	Diaphragm Ø (mm)	Swept volume (cm3)	3-phase motor (kW - rpm)
30	29	10	36	22.2	132	13.93	0.55 - 1000
46	45	10	56	22.2	132	13.93	0.55 - 1500
74	73	10	90	22.2	132	13.93	0.55 - 1000
80	79	10	36	36.5	132	37.66	0.55 - 1000
114	113	10	140^(*)	22.2	132	13.93	0.55 - 1500
124	123	10	56	36.5	132	37.66	0.55 - 1500
200	199	10	90	36.5	132	37.66	0.55 - 1000
310	309	10	140^(*)	36.5	132	37.66	0.55 - 1500

^(*)Do not use with 60 Hz motor

mROY XB - Metallic liquid end

Flow at 3 bar (l/h)	Flow at max. pressure (l/h)	Max. pressure (bar)	Stroke speed (spm)	Plunger Ø (mm)	Diaphragm Ø (mm)	Swept volume (cm3)	3-phase motor (kW - rpm)
14	11	105	36	15	86	6.36	0.55 - 1000
21	17	105	56	15	86	6.36	0.75 - 1500
30	28	49	36	22.2	132	13.93	0.55 - 1000
30	26	100	36	22.2	132	13.93	0.75 - 1500
34	27	105	90	15	86	6.36	0.55 - 1000
46	40	100	56	22.2	132	13.93	0.75 - 1500
53	43	105	140^(*)	15	86	6.36	0.75 - 1500
74	70	49	90	22.2	132	13.93	0.55 - 1000
74	65	100	90	22.2	132	13.93	0.75 - 1000
80	78	14	36	36.5	132	37.66	0.55 - 1000
80	77	28	36	36.5	132	37.66	0.75 - 1500
114	109	49	140^(*)	22.2	132	13.93	0.75 - 1500
114	103	100	140^(*)	22.2	132	13.93	1.10 - 1500
124	120	28	56	36.5	132	37.66	0.75 - 1500
200	196	14	90	36.5	132	37.66	0.55 - 1000
200	193	28	90	36.5	132	37.66	0.75 - 1000
310	304	14	140^(*)	36.5	132	37.66	0.75 - 1500
310	299	28	140^(*)	36.5	132	37.66	1.10 - 1500

^(*)Do not use with 60 Hz motor

Liquid end construction

COMPONENTS \ CONSTRUCTION	PVC ⁽¹⁾	316L⁽²⁾
Liquid end body	PVC	316L
Check valve cartridge	PVC	316L
Seats	PVC	316L
Balls	Glass	316L
Contour plate	PVC	316L
Diaphragm	PTFE	PTFE
Discharge ball spring	Hastelloy® C-276 alloy	316L
Seals	FKM	FKM

⁽¹⁾Pressure is limited to 10 bar at 20°C and pressure derated 1.1 bar / 5°C. Maximum operating temperature: 50°C

⁽²⁾Milton Roy Europe keeps an interchangeability table for national and international standards (AFNOR, DIN, ASTM, BS, etc).

OTHER LIQUID END MATERIAL

H2SO4 concentrated» version: 316L S.S. liquid end with seats in 904L and balls in Hastelloy C

"Viscous liquids" version: 316L S.S. liquid end with balls in 316L S.S. and spring in Hastelloy C
"Slurries" version: 316L S.S. liquid end with seats and balls in 440C
"Polyelectrolytes" version: PVC liquid end with seats and balls in 316L and spring in Hastelloy C
Other version on request: consult us

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We will help you to identify the right solution for your application, operating conditions and performance requirements

Simplex version - Metallic liquid end

MODELS	DIMENSIONS	CONNECTIONS
30 l/h - 46 l/h 74 l/h - 80 l/h - 114 l/h 124 l/h - 200 l/h - 310 l/h	A = 22 B = 233 C = 56 D = 97	Suction: 1/2" GAS F Discharge: 3/8" GAS F
14 l/h - 21 l/h 34 l/h - 53 l/h	A = 47 B = 207 C = 52 D = 68	Suction: 3/8" GAS F Discharge: 3/8" GAS F

Simplex version - Plastic liquid end

MODELS	DIMENSIONS	CONNECTIONS
30 l/h - 46 l/h 74 l/h - 80 l/h - 114 l/h 124 l/h - 200 l/h - 310 l/h	A = 35 B = 231 C = 104 D = 129	Suction: 1/2" GAS F Discharge: 3/8" GAS F

54814_EN (1).pdf

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mRoyXA-XB_datasheet.pdf

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MR-En-Brochure-chemical-metering-pump-mroy-series.pdf

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MR-En-Brochure-global-water-brochure.pdf

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Milton Roy, mROY Chemical Metering Pump

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mRoy XB for Durability and Precision

This product is not available in the US and India.

Key Specifications

Pressure Max - Metallic Liquid End

Pressure Max - Plastic Liquid End

Flow Max - Plastic Liquid End

Flow Max - Metallic Liquid End

Why this product?

Simplified Commissioning

Smooth Drive Mechanism

Rugged Construction

Precision Flow Control

Built-In Pressure Protection

Reliable Valve Performance

Certified Compliance

Wide Application Range

Performance

mROY XB - Plastic liquid end

mROY XB - Metallic liquid end

Liquid end construction

OTHER LIQUID END MATERIAL

Connect With Our Experts

Dimensions

Simplex version - Metallic liquid end

Simplex version - Plastic liquid end

Downloads & Video

Milton Roy, mROY Chemical Metering Pump

Milton Roy, mROY Chemical Metering Pump

Our resources

Spare Parts and Service Support When and Where You Need It

Browse Technical Resources and Documentation for Your Equipment

mRoy XA for Robust Performance