Which Butterfly Valve Is Better, With The Pin Or No Pin?
The butterfly valve with the pin refers to the butterfly valve with a pin on the butterfly valve's disc. The butterfly valve without a pin has no pin on the butterfly valve's disc. Which one is better? I will introduce the advantages and disadvantages of the two butterfly valves for you to judge.
Butterfly valve with pin: simple processing technology, good rigidity of discs, high pressure. If there are problems with the shaft and disc, it's hard to disassemble. Maybe the disc or shaft will be damaged. The butterfly valve with the pin is large -in diameter.
Pin-less butterfly valve: the connection between the shaft and the disc is generally made in square, hexagonal or other ways. During processing, the requirements for the fit between the shaft and the disc are high. And after a period of use, wearing will occur, reducing the opening and closing control accuracy of the valve. In case of problems, it can also be disassembled without structural damage. Generally, only a small diameter is used.
