Mechanical diaphragm metering pump

Engineered for uncompromising accuracy and rugged reliability, our mechanical diaphragm metering pump delivers precise fluid handling across the most demanding applications. With a flow range of 2-4900 L/h, discharge pressure up to 10 bar, and exceptional stability (±2%), it ensures consistent dosing even with high-viscosity fluids up to 1200 cP. Featuring corrosion-resistant liquid ends and a self-cleaning check valve design, it handles everything from aggressive chemicals to delicate suspensions- leak-free, whether running or idle. Built with a robust drive unit and flexible adjustment options, this pump is your intelligent solution for continuous, low-maintenance operation in harsh industrial environments.

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Technical Specification

● Flow rate: 2~4900 L/h

● Max.discharge pressure: 10 Bar

● Turndown Ratio: 10:1

● Stability accuracy: ±2%

● Max. suction lift head: 3m

● Max.suction pressure: 2 Bar

● Max, liquid temperature: 45℃

● Max.viscosity: up to 1200cP

Adjustment Options

● Manual Adjustment: wethwer the pump running or stopped

● Minimum adjustment scale is 1%

● Electric Stroke Controller: external control signal adjust stroke length

● Power Supply: 220V-50Hz, 1 phase

● Input Signal: 4-20mA

● Output Signal: 4-20mA/1-5V feedback signal.

● Frequency Inverter: External control signal, adjust stroke speed

● 220V-50Hz, 1phase /380V-50Hz, 3phase

● Input Signal: 4-20mA

Liquid End Features

● LE material: PP; PVC; PVDF; 316SS

● Diaphragm material: PTFE

● Ball check material: Glass; Ceramic; 316SS

● Special designed valve seat to ensure no leakage wether the pump running or stopping

● Variety of critical applications of pump head

Configuration:

- High viscosity, pulp, concentrated

- Sulfuric acid, sodium hypochlorite, etc

● Self-cleaning check valve structure

Drive Unit Features

● Variable eccentric adjustment stroke length to smooth pulsation impact of flow rate.

● Robust structure design suitable for pulse impact and harsh operating conditions

● Sliding bearing and high intensity wearable worm gear ensure stable long-term operation.

Metering pumps'code and performance

Code	Description
MB	MB	Dose series	MB frame
MC	MC	Dose series	MC frame

Code	Description
Code	Real Q LPH@Pmax	Speed SPM	Pressure Pmax(bar)	Motor Power kW	Connections
MB0002	2.4	37	10	0.251)	PP: 1/2"NPTM PVC: 1/2" NPTM 6x12 tube PVDF: 1/2" NPTM 316SS: 1/2" NPTF
MB0005	4.7	75
MB0010	9.5	149
MB0016	17	75
MB0025	26	75
MB0050	52	149
MB0090	90	75	7	0.25 0.371)	PP: 1/2"NPTF PVC: 1/2" NPTF 6x12 tube PVDF: 1/2" NPTF 316SS: 1/2" NPTF
MB0125	126	75
MB0180	178	149
MB0250	252	149
MB0330	330	149	5	0.371)
MB0420	420	149
MB0500	500	178

MC0170	170	73	10	0.55 0.751)	PP: 1/2"NPT F PVC: 1/2" NPTF PVDF: 1/2" NPTF 316SS: 1/2" NPTF
MC0170	170	73
MC0260	260	111
MC0340	340	146
MC0430	430	183		0.75 1.11)
MC0480	477	146	7		PVC/PVDF: 1/2" NPTF 316SS: 1/2" NPTM
MC0600	600	183	7		PVC/PVDF: 1/2" NPTF 316SS: 1/2" NPTM
MC0750	738	111	4.5		PVC/PVDF/316SS Suc: 1 1/2" NPT Dis: 1" NPT
MC1000	965	146
MC1200	1214	183		1.1 1.51)
MC1300	1310	146	3.5		PVC/PVDF: 1 1/2" NPTF 316SS: 1 1/2" NPTM
MC1700	1650	183	3.5		PVC/PVDF: 1 1/2" NPTF 316SS: 1 1/2" NPTM
MC2400DX 2)	2400	183	4.5	1.5	Please Consult factory
MC3600TX 2)	3600	183	4.5	2.2
MC5000TX 2)	4900	183	3.5	3

1) This power could be used for both constant and varied frequency, but for 5 50Hz varied frequency, please use speed variable motor.

2) DX is duplex pump, TX is triplex pump.

Code	Description
B	PP LE
P	PVC LE
S	316 LE
F	PVDF LE
V	High Viscosity (PVC LE)

Code	Description
N	Standard
X	Special consult factory

Main materials of liquid end

Wet parts	Head	Valve	Vlave seat	Ball	Diaphragm	Seal ring	Connection
PP	PP	PVDF	AFLAS	Ceramic	PTFE	Viton	PP
PVDF	PVDF	PVDF	PVDF	Ceramic	PTFE	PTFE cover	PVDF
316SS	316SS	316SS	316SS	316SS	PTFE	Viton	316SS

*Note: Daily output is calculated based on 20 hours of operation.

Wet parts	Head	Valve	Vlave seat	Ball	Diaphragm	Seal ring	Connection
PP	PP	PP	PP	Glass	PTFE	Viton	PP
PVDF	PVDF	PVDF	PVDF	Ceramic	PTFE	PTFE cover	PVDF
316SS	316SS	316SS	316SS	316SS	PTFE	Viton	316SS

Our in-house designers and engineers have produced countless great designs for customers from different industries

Wet parts	Head	Valve	Vlave seat	Ball	Diaphragm	Seal ring	Connection
PP	PP	PP	PP	Glass	PTFE	Viton	PP
PVDF	PVDF	PVDF	PVDF	Ceramic	PTFE	PTFE cover	PVDF
316SS	316SS	316SS	316SS	316SS	PTFE	Viton	316SS

Dose Series MAD metering pump outline drawing

	Liquid End materials	Suc. & Dis. Connec ons	C	A
MB0002 -MB0010	Plas c	1/2" NPTM	72	56


		6x12	108	56
	Metal	1/2" NPTF	102	56
MB0016 -MB0050	Plas c	1/2" NPTM	72	56


		6x12	108	56
	Metal	1/2" NPTF	102	56
MB0090 -MB0500	Plas c	1/2" NPTF	127	105


		DN15	127	105
	Metal	1/2" NPTF	131	105

Product Application

Whether your need is for potable water, industrial pure water, or produce water for sectors like biopharmaceuticals, our on-site containerized pure water equipment system is practical and cost-effective than traditional water procurement or complex on-site infrastructure builds. Here are key industries that leverage containerized pure water equipment

Electronics & Semiconductor Industry

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Mining & Construction Industry

Biopharmaceutical Industry

Food & Beverage Industry

Emergency & Disaster Relief Sector

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If you have any questions about water treatment systems, please feel free to contact QILEE.

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	Liquid End materials	Suc. & Dis. Connec ons	C	A
MC0170 -MC0430	Plas c	1/2" NPTF	125	93
MC0170 -MC0430	Metal	1/2" NPTF	130	93
MC0480 -MC0600	Plas c	1" NPTF	144	102
MC0480 -MC0600	Metal	1" NPTM	181	106
MC0750 -MC1200	Plas c	1-1/2" & 1" NPTF	188	124
MC0750 -MC1200	Metal	1-1/2" & 1" NPTM	200	128
MC1300 -MC1700	Plas c	1-1/2" NPTF	210	124
MC1300 -MC1700	Metal	1-1/2" NPTM	205	128