... absorber, pipe damper, seal, gate valve,check valve, foot valve, filters, valves, pressure balance valve, valve, butterfly valve, pipe expansion joints, bellows, waterproof sleeve ... , compressors, fans and other piping systemsbr> [Media]:Common type used to transport -15 to 120 centigrade, of air, ... water, sea water, oil, acid and alkali. Special type used to transport -30 to 250 centigrade of the ...