Process-Critical API 675 Pump | MiltonRoy Primeroyal PX-FT

Engineered for process-critical applications, the PRIMEROYAL Flat Twin (PX-FT) API 675 metering pump is Milton Roy’s most powerful pump explicitly designed for high performance industries and applications. The modular design is smaller and lighter than comparable Primeroyal models while maintaining a respectable performance with flows reaching up to 32,980 l/h (8,712 gph) and pressures up to 1,029 bar (15,000 psi).

Engineered for Demanding Environments

Custom-designed to meet strict industry requirements and perform reliably in the toughest applications.

High Pressure Performance

Handles up to 14,924 psi (1029 bar) for diaphragm and 14,132 psi (980 bar) for plunger liquid ends.

Exceptional Flow Capacity

Delivers up to 8,712 gph (32,980 lph) for diaphragm and 669 gph (2,536 lph) for plunger configurations.

Precision Metering Control

Offers accurate dosing with micrometric stroke adjustment from 0–100%, even during operation.

API 675 Compliance

Fully compliant with API 675 standards, ensuring trusted performance in critical applications.

Robust Material Construction

Built with 316L Stainless Steel and 17.4-PH for superior strength and corrosion resistance.

Double Diaphragm Safety

Features leak-proof double diaphragm design with over 20,000 hours of service life.

Multiplexing Capability

Reduces pulsation, improves efficiency, and supports multi-product injection in a compact setup.

Flexible Installation

Available in vertical or horizontal motor configurations to fit space-constrained environments.

Modular Customization

Adaptable design with multiple liquid ends, check valves, and connection types to match precise needs.

Extreme Condition Operation

Engineered for offshore, desert, saline, and low-temperature environments with specialized configurations.

Easy Maintenance & Protection

Includes MARS system for fast servicing and integrated over-pressure safety valve for reliable operation.

Performance Ratings of Primeroyal - Simplex Pumps

	50 Hz motor	6 0 Hz motor
Flow rate	Up to 32295 l/h	Up to 8,531 GPH
Pressure	Up to 1,029 bar	14,924 PSI
Thrust	6,000 daN	13,488 lb ft
100% stroke	120 mm	4.72 in
Ambient T° Standard	-10 to + 50 °C	+14 to +122 °F
Low T° design	- 40 to +50 °C	- 40 to +122 °F

PTFE diaphragm liquid ends

Widest chemical compatibility

Leak-free design
High operational safety: integrated relief valve
Cost effective solution in the entire product cycle life
The MARS system offers a number of advantages over traditional refill systems in hydraulically actuated diaphragm liquid ends: easy start-up without need to adjust the refill valve.

LIQUID END TYPE H5 (HX)

Universal solution
Higher pressure capabilities
High hydraulic efficiency

Plunger diameter code	Swept volume	50 Hz Motor					60 Hz Motor					Connections
		Stroke speed max	Motor speed max	Flow rate max		Pressure max	Pressure max	Motor speed max	Flow rate max		Pressure max
		Stroke speed max	Motor speed max	10 bar	P.max	Pressure max	Pressure max	Motor speed max	145 psi	P.max	Pressure max
Ø	cm³	spm	rpm	l/h		bar	spm	rpm	gph		psi
PTFE diaphragm - H5 type (HX)
55	285.1	146	1440	4745	3826	252	140	1728	1205	972	3654	2" - VV2 m
60	339.3	146	1440	5647	4734	212	140	1728	1434	1203	3074	2" - VV2 m
63	374.1	146	1440	6226	5319	192	140	1728	1582	1351	2784	2" - VV2 m
65	398.2	146	1440	6627	5721	181	140	1728	1684	1453	2622	2" - VV2 m
70	461.8	146	1440	7686	6794	155	140	1728	1952	1726	2248	2" - VV2 m
75	530.1	146	1440	8823	7941	135	140	1728	2242	2017	1958	2" - VV2 m
80	603.2	146	1440	10039	9163	119	140	1728	2550	2328	1725	3" - VV3
85	680.9	146	1440	11333	10472	105	140	1728	2879	2660	1522	3" - VV3
90	763.4	146	1440	12706	11852	94	140	1728	3228	3011	1363	3" - VV3
95	850.6	146	1440	14157	13319	84	140	1728	3596	3383	1218	3" - VV3
100	942.5	146	1440	15686	14858	76	140	1728	3985	3775	1102	3" - VV3
105	1039.1	146	1440	17294	16478	69	140	1728	4393	4186	1000	3" - VV3
110	1140.4	146	1440	18980	18176	63	140	1728	4822	4617	913	4"
115	1246.4	146	1440	20745	19965	57	140	1728	5270	5072	826	4"
120	1357.2	146	1440	22588	21811	53	140	1728	5738	5541	768	4"
125	1472.6	146	1440	24510	23765	48	140	1728	6226	6037	696	4"
130	1592.8	146	1440	26510	25768	45	140	1728	6734	6546	652	4"
135	1717.7	146	1440	28588	27879	41	140	1728	7263	7083	594	4"
140	1847.3	146	1440	30745	30033	41	140	1728	7810	7629	565	4"
145	1981.6	146	1440	32981	32295	36	140	1728	8378	8204	522	4"

Metallic diaphragm liquid end

Challenging products dosing: diffusing, radioactive or abrasive liquids

High pumped liquid temperatures
Leak-free design
High operation safety: integrated relief valve

LIQUID END TYPE M2 (MX)

Plunger diameter code	Swept volume	50 Hz Motor					60 Hz Motor					Connections
		Stroke speed max	Motor speed max	Flow rate max		Pressure max	Pressure max	Motor speed max	Flow rate max		Pressure max
		Stroke speed max	Motor speed max	10 bar	P.max	Pressure max	Pressure max	Motor speed max	145 psi	P.max	Pressure max
Ø	cm³	spm	rpm	l/h		bar	spm	rpm	gph		psi
Metallic double diaphragm, Type M2 (MX)
25	58.9	175	1440	1138	700	1029	175	1728	301	184	14924	VV 7
30	84.8	175	1440	1638	1206	729	175	1728	433	319	10573	VV 7
31	90.6	175	1440	1749	1340	694	175	1728	463	355	10065	VV 7
33	102.6	175	1440	1982	1450	597	175	1728	524	384	8658	VV 7
35	115.5	175	1440	2230	1710	544	175	1728	590	450	7890	VV 7
38	136.1	175	1440	2629	2100	457	175	1728	695	552	6628	VV2 f
42	166.3	175	1440	3212	2708	386	175	1728	849	715	5598	VV2 f
47	208.2	175	1440	4022	3496	302	175	1728	1064	924	4380	VV2 f

LIQUID END TYPE P4 (NX)

Simplex and vertical motor configuration

Version	Net weight (*)		Gross weight (*)		Packing
	kg	lbs	kg	lbs	(L x W x H) mm	(L x W x H) in
Simplex - P4 (NX) liquid end and vertical motor configuration	3232	7,125	3462	7632	3090 x 1510 x 2290	121.65 x 59.45 x 90.16

* Approximately

Simplex - P4 (NX) liquid end and - PX FT.jpg

LIQUID END TYPE H5 (HX)

Simplex and vertical motor configuration

Version	Net weight (*)		Gross weight (*)		Packing
	kg	lbs	kg	lbs	(L x W x H) mm	(L x W x H) in
Simplex - HX liquid end and vertical motor configuration	3700	8,157	3930	8,664	3330 x 1510 x 2290	129.92 x 59.45 x 90.16