What is the red element on top of the pneumatic control valve for?
Thread Content
Is it the interface reserved for installing a pressure gauge?
Good question. Move to the dashboard section for more discussions
Testing the membrane’s capacity, I guess
Is this control valve diaphragm-type or piston-type? If it is diaphragm-type and a normally open valve, then that red outlet is used for exhaust and waterproofing. If it is piston-type, you need to refer to the manual.
The diaphragm is open to the air – how is it protected from rain? Curious
Cylinder exhaust is primarily used to determine whether there is cross-bleed in the cylinder
This is the rain cover for the exhaust vent; it’s present on all pressure release valves, though in different forms. Otherwise, water can get into the diaphragm, causing the spring to rust and get damaged. It’s important to pay attention to whether it has aged over time, and to replace it regularly.