RXBF-A back pressure valve

RXBF-A25/1.0-F back pressure valve

Product Introduction:

RXBF-A back pressure valveRXBF-A25/1.0-F back pressure valve RXBF-A carbon steel back pressure valve RXBF-A flange back pressure valve RXBF-S stainless steel back pressure valve RXBF-L stainless steel 316L back pressure valve RXBF-S stainless steel 304 back pressure valve/RXAF-A carbon steel safety valve RXAF-S stainless steel safety valve RXAF-L stainless steel safety valve/RXBF-A15/1.0 back pressure valve RXBF-A20/1.0 back pressure valve RXBF-A25/1.0 back pressure valve RXBF-A32/1.0 back pressure valve RXBF-A40/1.0 back pressure valve RXBF-A50/1.0 back pressure valve RXBF-A65/1.0 back pressure valve RXBF-A80/0.6 back pressure valve RXBF-A100/0.6 back pressure valveUsed to prevent liquid from flowing or siphoning under gravity, the back pressure valve can reduce the flow and pressure fluctuations caused by siphoning.

Back pressure valves are used to prevent liquids from flowing by gravity (or siphoning). In this case, a pressure greater than the liquid's own pressure is generally used. To prevent liquid from flowing by itself in a 2-meter medicine tank, a back pressure valve with a pressure greater than 0.02 MPa can be used, usually 0.1 MPa. A back pressure valve is used to stabilize the flow rate of a pump. For example, if the flow rate of some pumps varies greatly with pressure, a back pressure valve can be installed at the outlet of the pump to stabilize the output flow rate. In this case, the pressure of the back pressure valve is generally selected to be the actual operating pressure of the pump or slightly lower than the operating pressure of the pump. The one-way valve on the outlet pipeline is used to prevent liquid backflow, and the back pressure valve is used to maintain a constant pressure at the pump outlet.

Working Principle:

The back pressure valve operates through the elastic force of the built-in spring: when the system pressure is lower than the set pressure, the diaphragm blocks the pipeline under the action of the spring elastic 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. The structure of the back pressure valve is similar to that of the one-way valve, but the opening pressure is greater than that of the one-way valve, between 0.2 and 0.6 MPa.

Performance characteristics:

When the pressure in the pipeline or equipment container is unstable, the back pressure valve can maintain the required pressure in the pipeline, allowing the pump to output flow normally. At the outlet of the pump, siphon phenomenon often occurs due to gravity or other effects. In this case, the back pressure valve can reduce the flow and pressure fluctuations caused by siphon. When working at low system pressure, volumetric pumps such as metering pumps may experience excessive delivery. To prevent similar issues, it is necessary to ensure that the outlet of the metering pump has a back pressure of at least 0.7 Bar, which is generally achieved by installing a back pressure valve at the outlet of the metering pump.

Design features:

Spring diaphragm structure, adjustable pressure (see parameter table for pressure adjustment range)

The only parts that come into contact with the medium are the lower valve body and the diaphragm. The sealing area between the lower valve body and the diaphragm is processed with sealing ribs, which have good sealing effect and high sensitivity

The conventional membrane adopts EPDM lined PTFE form and is processed with cloth clamping, which has good sealing effect and high service life; Pure PTFE membrane has high temperature resistance and strong corrosion resistance

Scope of application:

Chemical industry, water treatment, laboratory

Corrosive liquids, ordinary gases

Characteristic parameters:

Adjustable pressure 0-0.3MPa, 0-1.0MPa (see parameter table for details)

Safety testing pressure: 1.5 times the input pressure

Applicable temperature: ordinary diaphragm -5 ℃ to+80 ℃; PTFE membrane: -5 ℃ to+120 ℃

Material:

Lower valve body material: PVC, SS304, SS316L, PTFE, PVDF, PP, carbon steel, etc. (can be customized according to requirements)

Membrane material: EPDM lined PTFE (composite membrane), PTFE (polytetrafluoroethylene)

Upper valve body material: PVC, carbon steel (nickel plated, blackened), 304 stainless steel, 316L stainless steel

When purchasing a back pressure valve, please provide the following data:

1. The diameter of the back pressure valve

2. Pressure regulation range

3. Material (conventional materials include PVC, 304 stainless steel, 316L stainless steel).

4. The medium, temperature, and flow rate of transportation.

Technical parameters (carbon steel back pressure valve parameters are the same as stainless steel back pressure valve):

Henan Qiaoyi Valve Co., Ltd. mainly produces【RXBF-A back pressure valve RXBF-A25/1.0-F back pressure valve RXBF-A carbon steel back pressure valve RXBF-A flange back pressure valve RXBF-S stainless steel back pressure valve RXBF-L stainless steel 316L back pressure valve RXBF-S stainless steel 304 back pressure valve/RXF-A carbon steel safety valve RXAF-S stainless steel safety valve RXAF-L stainless steel safety valve/RXBF-A15/1.0 back pressure valve RXBF-A20/1.0 back pressure valve RXBF-A25/1.0 back pressure valve RXBF-A32/1.0 back pressure valve RXBF-A40/1.0 back pressure valve RXBF-A50/1.0 back pressure valve RXBF-A65/1.0 back pressure valve RXBF-A80/0.6 back pressure valve RXBF-A100/0.6 back pressure valve】We have a large inventory of spot goods available for direct sales at factory prices! We always adhere to the principle of "serving customers, developing enterprises, and giving back to society" in our practical operation, the business philosophy of survival through quality, development through service, and efficiency through management, and the corporate policy of "quality first, reputation first, management based, and service sincere". We carry forward the corporate spirit of "exploration and innovation, high quality and efficiency", and provide safe and reliable products and perfect after-sales service for new and old customers! All text, data, and images in this article are for reference only.