Product Description Material: Body:Cast iron/Ductile iron Bonnet:Cast iron/Ductile iron Ball:NBR/EPDM Bonnet gasket:NBR/EPDM Screw & Bolt:Steel with zinc Test Working pressure:16BARS Shell test pressure:24BARS Seat test pressure:17.6BARS Remark:Our design can be suitable for all standards:BS,DIN,ANSI,JIS,etc.