... ,Backup Ring,Check Ring,Cbuck Ring ,Round Nut,Protective cap, Gas valve,Washer,Nut,Nameplate,Check Ring,Check Ring, Seal Ring,Check ... PH stainless steel Poppet & Spring - 304 stainless steel Gas Valve Cartrdge - stainless steel Gas Valve Protector - steel Gas Valve Stem - steel Bladders - various polymers,see Standard ...