Hydraulic metering pump

Hydraulically actuated diaphragm metering pump is a high-precision, compact hydraulic diaphragm metering pump designed and manufactured according to the API 675 requirements. It is suitable for the application in various demanding and complicated process condition, with the advantages of compact structure and easy maintenance. Mainly applied in power supply, chemistry, petro-chemistry, papermaking, textile, green energy and environmental protection, could be used in bio-pharmaceutical and food industry as well.
● Flow rate: 1.6~326 L/h
● Max.discharge pressure: 160 Bar
● Turndown Ratio: 10:1
● Stability accuracy: ±1％
● Max. liquid temperature: 90℃
● Max. viscosity: up to 1200cP

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Power Series Metering Pump Code

Frame Size

ET Drive Unit, EV Drive Unit

Plunger Diameter

Plunger Diameter(mm)

Diaphragm

S - Single Diaphragm
D - Double Diaphragm

Check Valve

V - Single Ball
W - Double Ball

Pressure

Discharge Pressure(Bar)

The Technical Features

● Designed for continuous delivery of various special mediums

● Various materials available for the pump head: 316SS, PVC, PVDF, special alloys

● Tight seal of diaphragm ensures no leakage

● Many detective methods: on-site signs of diaphragm rupture and distant signal transmission

● Internal pressure relief valve which ensures the stability of output flow rate so as to meet the accuracy requirements

● Various check valve configuration: single-ball valve, double-ball valve, spring loaded valve

● Various connection methods: threaded connection, flange connection

● Flow rate could be continuous adjusted from 0% to 100% through the hydraulic oil way control

● Metering accuracy: 1%, turndown ratio: 10:1

● Tapered roller-bearing suit high loads operation condition

● Oil bath lubrication ensures low wear and high reliability

● High-efficiency worm gear and worm shaft decelerating mechanism works steadily with low noise

● Compact structure and small volume, suit limited installation space

● The design and manufacture complies with the API 675 standards

Typical Dosing Applications

● Ammonia

● Hydrazine

● Scale inhibitor

● Water treatment additives

● Chemical process additives

● Oil industry additives

● Edible pigment and food flavor

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Flow rate adjustment methods

Manual adjustment

Change the stroke length through handwheel

● Adjust ﬂow rate is available either during running or at standstill
● Minimum adjustment scale is 1%

Electric actuated stroke controller

Receive external control, Signal to adjust the stroke length

● Power source: 220V-50Hz-single phase
● Input signal: 4-20mA simulated signal
● Output signal: 4-20mA/1-5V simulated signal, used for record display and control system

Frequency conversion controller

Receive external control signal to adjust the stroke speed

● Power supply: 220V-50Hz-single phase or 380V-50Hz-three phase
● Input signal: 4-20mA simulated signal

Power Series Data Sheet

Plunger	Speed	Flow rate	Pressure	Connection
mm	spm	L/h	bar	Connection
Φ15	47	2	125	Suction: NPT 1/2"F Horizontal Discharge: NPT 1/4"F Horizontal





	72	3
	110	5
	144	7
	175	8
Φ17	47	4	106
	72	6
	110	9
	144	12
	175	15
Φ19.5	47	7	67	Suction: NPT 1/2"F Horizontal Discharge: NPT 1/4"F Horizontal
	72	11
	110	17
	144	22
	175	27
Φ23	47	13	42
	72	19
	110	29
	144	38
	175	47
Φ28	47	22	25
	72	33
	110	51
	144	66
	175	81