Features: 1) Design standard: BS1414, API 600, ASME B 16.34 2) Description: middle inner pressure automata sealing, rising stem, renewable seat, rigid or flexible disc 3) Size: from 2" to 24" 4) Class: from 600lb to 2,500lb 5) Connection ends: flange (ASME/ANSI B16.5A, ASME B16.47) SW (ASME B16.25) 6) Operator: handwheel, gear, subulate gear, actuator 7) Body main material: WCB LCB, LCC, WC6, WC9, C5, C12, CF8, CF8M, CF3M, CF8C, CK20, CN7M, CD4MCu, CK3MCuN, Cu5MCuC, CN3MN, M35-1, MONEL400, MONEL500, CY40, CW6M 8) Sealing material: F6, F310, CoCrA, Cu, MoNCL, alloy 20 al-bronze 316 Packing: Veneer case for sea transportation