4 INCH GG20 BS21 PN16 cast iron foot valve factory BS21 is the specification for pipe threads for tubes and fittings according to British standard. 4 ...
ANSI H42X GGG50 resilient seal foot valve from Hebei Due to the difference of connection type, there are threaded foot valves and flanged foot valves. ...
NBR/EPDM ductile iron BS4504 foot valve BS4504 is the British Standard of flange. Foot valve is a kind of check valve. The foot valves consist of body...
female BS21 cast iron foot valve factory from China About foot valve, it is resilient seal valve. There are different types, pls email Sophia if you'd ...