hand seal butterfly valve

hand seal butterfly valve

Hand seal butterfly valve is also popular during the industrial process. Actually, this kind of butterfly valve can be manufactured into a wide range of applicable sizes. And all the design and manufacturing should comply with the certain standards. According to the difference on the size, the strength test and seal test are taken under the corresponding pressure. In most cases, the hand seal butterfly valves are suitable for the control of the water, oil, steam, coal gas, acid and alkali and so on. And the suitable temperature would determined by the manufacturing materials and the specific working environments. No matter what, the operation of the hand seal butterfly valves should be done under the operating instruction.

Generally speaking, the hand seal butterfly valves mainly consist of the body, disc, stem, seal ring, seat and bushing. The materials such as the carbon steel or stainless steel are applied to produce the body and the disc. Then the durability would be greatly improved. Besides, the stainless steel can be used to manufacture the other parts. As a result, the hand seal butterfly valves are able to be used under a rather high working temperature.