Butterfly valve wafer type(bv1000w) Size:dn40-dn600 Body:ci, di, wcb, ss Disc:di, ss, c954 Stem:ss Seat:epdm, nbr, viton, ptfe Actuator:hand lever, worm gear, electric, pneumatic Design std:api609, en593 Face to face dimension:din3202-k1, bs5155, iso5752 mss sp-67, en558-1 Flanged frilling std:universal Pressure test:api598
