How To Assemble The Air Pump

This is the order in which the parts MUST be installed.
This is the order in which the parts MUST be installed.

This is how the stainless steel valve body goes together. The tapered edges will always seat against the white plastic seals. The white plastic seals will always be nested against the bottom of the bore of the diaphragm body and against the upper and lower manifolds.
SS Valve Body