boiler drain valve CE,ISO9001:2000 Certificate 11 years experience on valve industrial 100 skilled workers 1. Brass Material• MS58,MS59• CW617• CW602N,CZ132• Lead free brass 2. Size 25071,25072,25073,25074,25075,25076,25077 3/8" , 1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 4" 3. SurfaceYellow brass colorNickel platedChrome plated 4.descriptionnominal pressure: PN≤1.6MPaApplicable media: water ...