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Zero-leakage valve

2017-01-04View Original

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Dear experts: Does anyone know any manufacturers that produce zero-leakage valves? Eccentric, two-way, or three-way valves are all acceptable. Additionally, the switching speed should be just a few seconds – please!
Reply #22017-01-04
Zero leakage is no problem, and the switching time for small-diameter valves is also fast; of course, it’s best to use it with an actuator!
Reply #32017-01-05
Orbital ball valve: zero leakage, short switching time
Reply #42017-01-05
For this issue, there should also be a standard for zero leakage – zero leakage at 100 MPa over 100 years – which is quite difficult to achieve. It’s better to specify the exact process parameters you need; saying generally that zero leakage is required won’t allow others to respond to you
Reply #52017-01-05
Pneumatic butterfly valves can achieve zero leakage; equipped with pneumatic actuators, they also have a fast switching speed, allowing operation to be completed within a few seconds
Reply #62017-01-05
Are there relevant materials and manufacturer contact information, as well as records of actual use?
Reply #72017-01-05
How can I choose a model without any process requirements?
Reply #82017-01-06
There are too many valves with zero leakage; specific parameters need to be specified
Reply #92017-01-19
May I ask who you are? We have been struggling with these leak-free valves for a long time; they need to be switched on and off every 5 seconds, operating 24 hours a day. Waste gas flows through them, with a pressure of 5.5 kilograms and a temperature of 110°C. The volume of waste gas is approximately 10,000 CMH. Could you please recommend some suitable valves, as well as manufacturers and their contact information? Thank you very much!
Reply #102017-01-20
Is the switch turning on that frequently? It is recommended to use forcibly sealed ball valves (track ball valves); the greatest advantage of such valves is that, during opening and closing, the ball separates from the valve seat, thereby eliminating friction between the ball and the valve seat.

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