Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand 1
Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand 2
Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand 3
Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand 1
Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand 2
Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand 3

Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand

Inquiry
Place of Origin
CHINA
Product Name
Diaphragm Back Pressure Valve

Metering pump and positive displacement pumps will have excessive delivery when working under low pressure.In order to prevent similar problems, a back pressure of at least 0.7 Bar must be at the inlet and outlet of the metering pump.This can be achieved by installing a back pressure valve in the outlet pipe of the metering pump.

 

Function

1. Provide pressure difference for the pipes at both ends of the back pressure valve

2. It can be used as a safety valve in systems where the requirements are not very strict.

3. Used in conjunction with a pulsation damper to reduce the harm of water hammer to the system, reduce the peak value of flow rate fluctuations, and protect pipelines, elbows, and joints from pressure fluctuations.

4. Create a good working environment for metering pumps and improve pump performance.

 

Operational Principle

The back pressure valve works by the elastic force of a spring. When the system pressure is lower than the set pressure, the diaphragm will block the pipeline under the action of the spring force; when the system pressure is greater than the set pressure, the diaphragm compresses the spring, the pipeline is connected, and the liquid passes through the back pressure valve.

 

Use of back pressure valve

In the outlet pipeline, the back pressure valve should be used at the same time as the pulsation damper, and the pulsation damper should be used to absorb the flow peak between the pump and the back pressure valve. Without the pulsation damper, the back pressure valve will open and close quickly with each pump stroke. When there is a pulsation damper, the back pressure valve will oscillate in the half-open and half-closed positions, so the pulsation damper can reduce the wear rate of the back pressure valve.

For large flow pumps, and the outlet pipe is long and thin, the installation position of the back pressure valve should be close to the filling point to reduce the tendency of siphoning.

When transporting media containing suspended solids, a three-way (or four-way) with a pipe plug should be installed at the inlet end of the back pressure valve so that the pipeline can be cleaned without disassembly.

Back pressure valve is only a kind of pipeline component, and it can only be used in conjunction with other pipeline components (such as pulsation damper, safety valve, check valve, stop valve) in order to exert its maximum effect.

 

Selection Guide

Adjustable range 0-3bar

Anti-siphon function

Vulcanized PTFE/EPDM diaphragm

Body Material:PVC、PVDF、SS316L

Sizes from ¼” to 2” depending on model

 

Notice

1. Avoid resonance with the system.

2. When using the pulsating damper, the pulsating damper should be installed between the pump and back pressure valve to absorb the flow peak between the pump and the back pressure valve. Slow down the wear speed of the back pressure valve.

3. should be applied to protective sheds or protective covers when used outdoors.

4. Before any maintenance of the back pressure valve, stop the running equipment, release the pressure, turn off the valve associated with the system, while confirming that there is no pressure in the pulsating damper. Pay attention to preventing the liquid from harming the human body during repair.

5. If the back pressure valve is reversed, the back pressure will be doubled, and the hazards will be hazarded to the system.

6. The failure of the back pressure valve should be cut off in time in operation.

 

Diaphragm Back Pressure Valve Detailed List
Main Data Dimensions(mm)
Model Body Material Size Max Flow L A B H D1 D2
VB1P PVC 1/4” 240L/H 102 38 60 19 60 35
VB1L 316L 1/4” 240L/H 102 38 60 19 60 35
VB1F PVDF 1/4” 240L/H 102 38 60 19 60 35
VB2P PVC 1/2” 380L/H 102 38 60 19 60 35
VB2L 316L 1/2” 380L/H 102 38 60 19 60 35
VB2F PVDF 1/2” 380L/H 102 38 60 19 60 35
VB3P PVC 3/4” 650L/H 135 60 70 30 88 54
VB3L 316L 3/4” 650L/H 135 60 70 30 88 54
VB3F PVDF 3/4” 650L/H 135 60 70 30 88 54
VB4P PVC 1” 800L/H 135 60 70 30 88 54
VB4L 316L 1” 800L/H 135 60 70 30 88 54
VB4F PVDF 1” 800L/H 135 60 70 30 88 54
VB5P PVC 1-1/4” 1200L/H 145 70 70 35 100 54
VB5L 316L 1-1/4” 1200L/H 145 70 70 35 88 54
VB5F PVDF 1-1/4” 1200L/H 145 70 70 35 100 54
VB6P PVC 1-1/2” 2600L/H 235 84 100 42 128 84/72
VB6L 316L 1-1/2” 2600L/H 235 78 100 39 128 84/72
VB6F PVDF 1-1/2” 2600L/H 235 84 100 42 128 84/72
VB8P PVC 2” 3200L/H 255 95 100 47.5 128 84/72
VB8L 316L 2” 3200L/H 250 89 100 44.5 128 84/72
VB8F PVDF 2” 3200L/H 255 95 100 47.5 128 84/72
Body Material PVC, PVDF, 316L Stainless Steel (SS), additional materials may be available on request
Diaphragm PTFE+EPDM composite diaphragm
Inlet Type NPT
Adjustable Range 0-3 bar
Valve Top ABS/304SS
Max Temperature Plastic 45℃, Metal 60℃

Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand 4

Diaphragm Back Pressure Valve Dimensions

 

Wholesale CHINA Back Pressure Valve Diaphragm Back Pressure Valve MaituFlow Brand 5

Pumping System Overview


Company Advantages


· MaituFlow Pulsation Dampener has passed a broad range of testing conducted by third-party testing labs. The testing mainly covers appearance after dry cleaning or washing, crease resistance/recovery, dimensional stability to washing, and flammability.


· It is defect-free through continuous quality management processes.


· The product has a large customer base and a huge market development space.


Company Features


· Specializing in the manufacture of Safety Relief Valve for many years, MaituFlow Guangzhou Industrial Equipment Co., Ltd is a mature company with abundant expertise and experience.


· MaituFlow Guangzhou Industrial Equipment Co., Ltd has built the complete quality and management guarantee system, obtained the ISO9001 certificate.


· Undertaking responsibilities to promote Safety Relief Valve is our mission. Contact!


Application of the Product


Back pressure valve of MaituFlow can be widely used in various fields.


MaituFlow is rich in industrial experience and is sensitive about customers' needs. We can provide comprehensive and one-stop solutions based on customers' actual situations.


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