Non-return check valve:
There are 3 specification:
1 1/4'',1''short,1 1/2''short non-ret

Non-return check valve:

Stainless steel

There are three specification:

1 1/4''long non-return check valve
1''short non-return check valve
1 1/2''short non-return check valve

Special design for applying on B600S complete set constant pressure control.