Is there a swing check valve that can be opened by a slight pressure from exhaust gases?
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Is there a swing check valve that can be opened by a slight pressure from exhaust gases?
It is best to clarify the pressure values and related data, along with detailed descriptions of the process, to facilitate discussion and serve as a reference.
This is available; you can find it by checking the product samples from the manufacturer.
It seems there aren’t any swing-type ones; I’m also looking for them
I’ve seen ones made from PP panels and shafts that open like blinds; this is a more labor-saving method. The exhaust pipe resistance should not be too high
This is a practical problem: especially when exhaust gas at normal pressure or slightly positive pressure is discharged into the exhaust manifold, a check valve with a very low opening pressure is required; otherwise, the exhaust gas cannot be expelled
What is the micro-pressure you are referring to in Pa?
The pressure is too low; it will likely be difficult to find. It is recommended to consult the manufacturer, providing details about the operating conditions in particular； If conditions permit, consider installing a remote butterfly valve along with pressure gauges at the front and back; the differential pressure signal can be used to interlock with the butterfly valve ； It can effectively collect pipeline operation information ；
A check valve that can open under such pressure no longer has any check function. It can’t be sealed.