Titanium back pressure valve

Product Overview

Titanium back pressure valveModel RXBF-T15, brand Shanghai Liyuan, product structure: diaphragm/piston type, product specification DN15-100, pressure rating PN10-200, valve body material titanium, alkali corrosion resistance and chloride ion seawater resistance, product temperature resistance 150 ℃, connection method: flange thread welding, etc.

Titanium back pressure valveIt is a type of volumetric pump used for metering pumps, which may experience excessive delivery when operating at low system pressures. To prevent similar issues, a back pressure of at least 0.7 Bar must be maintained at the inlet and outlet of the metering pump. The purpose can be achieved by installing a back pressure valve in the outlet pipeline of the metering pump.

Main functions of the product

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

2. Can be used as a safety valve in systems with less stringent requirements.

3. Use in conjunction with pulsation dampers to reduce the harm of water hammer to the system, minimize the peak value of flow velocity fluctuations, and protect pipelines, elbows, and joints from pressure fluctuations.

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

Product working principle

The back pressure valve works through the elastic force of the spring. When the system pressure is higher than the set value

When the pressure is low, the diaphragm blocks the pipeline under the action of spring elasticity; 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.

Product usage

In the outlet pipeline, the back pressure valve should be used together with the pulsation damper to absorb the peak flow between the pump and the back pressure valve. When there is no pulsation damper, the back pressure valve will quickly open and close 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 high flow pumps with long and thin outlet pipelines, the installation position of the back pressure valve should be close to the filling point to reduce the tendency of siphoning.

When conveying 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 to allow the pipeline to be cleaned without disassembly.

Back pressure valve is just a type of pipeline component, which is only compatible with other pipeline components (such as pulse)

The combination of dynamic dampers, safety valves, check valves, and globe valves is necessary to achieve maximum effectiveness.