Detailed Product Description Specifications: 1) Design: API 6D 2) Inspection and test: API 6D 3) Face-to-face: ANSI 16.10 / API 6D 4) Flange: ANSIB16.5 / ANSIB16.47 5) Size: 1" - 40" 6) Class: 150 - 2,500 lbs 7) Temperature: -29 ~ 121 8) Body / bonnet material: WCB / 316 / 304 9) Seat material: 13% Cr + PTFE / 316 +PTFE / A105 +ENP + PTFE 10) Disc material: 13% Cr / 316 / A105 + ENP 11) Stem material: 13% Cr / 316 / 304