The valve positioner is the main accessory for the regulating valve and is usually used with pneumatic valves. Its function is: accept the output signal of the regulator, and then use its output signal to control the pneumatic valve. When the valve i...

In the process of processing and shaping CPVC resin into finished or semi-finished products, "plasticization" is a key. Whether it is extrusion molding or injection molding, the quality of plasticization is directly related to the internal quality an...

This valve is mounted in the diameter direction of the pipe. In the cylindrical passage of the butterfly valve body, the disc-shaped disc rotates about the axis, the rotation angle is between 0°-90°, and when rotated to 90°, the valve is fully open. ...

The optimum position for installing the regulator is to position the stem in a vertical plane with the actuator above the valve body. If the regulating valve must be installed at a position where the valve stem is moved horizontally, or if the direct...

The pneumatic shut-off valve can function as a quick cut, and has the characteristics of simple structure, responsiveness and reliable operation. So what is the maintenance method for the pneumatic shut-off valve? Pneumatic shut-off valves are common...

Selection instructions of ball valves   Ball valves are suitable for low temperature, high pressure, high viscosity media. Most ball valves can be used in media with suspended solid particles and can also be used in powdered and granular media depend...

Commonly used valve selection instructions 1. Description of ball valve selection The ball valve is suitable for low-temperature, high-pressure, and high-viscosity media. Most ball valves can be used in media with suspended solid particles, and can a...

The high-pressure steam pipe installation valve is generally welded, and the argon arc welding is generally used for the bottom cover welding. High pressure and steam must strictly guarantee the safety of the pressure and the safety of the seal. Ther...

The pneumatic ball valve is composed of a pneumatic actuator and a ball valve. The pneumatic actuator is divided into double action and single action. The double acting pneumatic actuator has gear rack, piston, output shaft, sealing ring and other pa...

Flange gaskets above 2.5Mpa are all made of metal wound mats. 1.0Mpa-2.5Mpa flange seal with asbestos pad and black lead powder. The water pipe flange gasket below 1.0Mpa is made of rubber pad and painted with black lead powder. The packing of the pu...

Globe Valve opening and closing parts are plug-shaped discs with a flat or conical surface on the seal. The discs move linearly along the center line of the valve seat to achieve opening and closing. They are mainly used to cut off the medium in the ...

1. Prevent the valve from leaking or leaking All valves must be tested for different levels of water pressure after entering the plant. Valves that need to be dismantled for repair need to be ground. During the overhaul process, carefully check wheth...