Rather than range springs, the regulators and relays use a stainless-steel capsule as a sensing device. Its multistage design allows for self-correction at pressure variations as small as 0.01 psig.

It is a normally closed valve that will remain closed until the inlet pressure exceeds the regulator’s set point. A typical application for the Type 855BP Miniature Back Pressure Regulator is to ...

The air compressor unloader valve is what makes the “psssssst ... small pipe wrench to remove the quick-connect fitting, ...