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DBB Valves Double Block Bleed Valve Standard Compliance: Basic Design: ANSI / ASME B16.34, API 6D, API 6A, BS5351, BS 6755 / BS EN 12266, NACE MR 01 75, ANSI, ISO & API standards Face to Face Standard: ANSI / ASME B16.10, API 6D Flanged End Standard: ANSI / ASME B16.5 (2”-24”) ANSI / ASME B16.47 (>24”) Butt Welding (BW) End Standard: ANSI / ASME B16.25 Socket Welded (SW) End Standard: ANSI / ASME B16.11 Screw/Thread End Standard: ASME B1.20.1 Test and Inspection standard: API 6D / API598 Fire-safe Design / Test standard: API 6FA, API607 Other standard: NACE MR-0175 Specifications: Pressure: 150LB, 300LB, 600LB, 900LB, 1500LB, 2500LB NPS: 1/2”~24” Bore: Full Bore and Reduced Bore End Contenction: Fanged (RF/FF/RTJ), Socket Welded(SW), Butt Welding(BW), Hub, Thread/ScrewedSeat Design: Soft Seated, Metal to Metal, Single & Double Piston effect. Operater: Lever / Gear / Pneumatic / Hydraulic / Electric / Gas over Oil / Quarter Turn / Rack and Pinion / Scotch Yoke. Materials Construction Carbon Steel: ASTM A105N, A216 WCB/WCC/WCA Low Temperature Carbon Steel (LTCS)/Alloy Steel: ASTM A350 LF2, A352 LCB/LCC/LCA ASTM A350 LF1/LF3/LF5/LF6/LF9/LF787, A352 LC1/LC2/LC2-1/LC3/LC4/LC9/, A743 CA6NM High Temperature Steel(Chrome Moly)/Alloy Steel: ASTM A182 F1/F5a/F9, A217 WC1/C5/C12 ASTM A182 F11, A182 F22, A216 WC6, A217 WC9 ASTM A182 F91, A217 C12A Austenitic Stainless Steel/Alloy Steel: ASTM A182 F304 (L) (H) / UNS S30400 (S30403) (S30409), A351 CF8/CF3/CF10 ASTM A182 F316 (L) (H) / UNS S31600 (S31603) (S31609), A351 CF8M/CF3M/CF10M ASTM A182 F316 Ti / UNS S31635 ASTM A182 F321 (H) / UNS S32100 (S32109) ASTM A182 F347 (H) / UNS S34700 (S34709), A351 CF8C ASTM A182 F317L / UNS 31703, A351 CG3M ASTM A182 F44 (6MO), ASTM CK3MCuN ASTM A182 F20*(ALLOY 20#) / UNS N08020, A351 CN7M Ferritic-Austenitic / Duplex / Super Duplex Stainless Steel: ASTM A182 F51 /UNS S31803 /S32205 (Duplex2205), A890/A995 GR.4A (J92205) /A351 CD3MN ASTM A182 F52, ASTM A182 F53 / UNS S32750 (Super Duplex2507), A890/A995 GR.5A / A351 CE8MN (CD4MCu) ASTM A182 F55 / UNS S32760, A890/A995 GR.6A (CD3MWCuN) ASTM A182 F60 / UNS S32950 Super Austenitic ASTM A182 F44 / UNS S31254, A351 CK3McuN Alloy 20 ASTM B462 / UNS N08020 Monel 400 / UNS N04400 ASTM B564-N04400 / A494 M35-1 Monel 500 / UNS N05500 ASTM B564-N05500 Nickel Alloy 904L / UNS N08904 Inconel 600 /UNS N06600 /ASTM B564-N06600 /ASTM A494-CY40 Inconel 625 /UNS N06625 /ASTM B564-N06625 /ASTM A494-CW6MC Inconel 800 /UNS N08800 /ASTM B564-N08800 Inconel 825 /UNS N08825 /ASTM B564-N08825 /A494 CU5MCuC Hastelloy C-276 /UNS N10276 /ASTM B564-N10276 /ASTM A494 CW2M Titanium ASTM B381 GR.F2/UNS R50400, B367 GR. C2, ASTM B381 GR.F3, B367 GR.C3, ASTM B348 / B381 / UNS R50400 BRASS C36000/ Bronze / Aluminium Bronze ASTM B62 UNS C83600,ASTM B148 C95800/ BS1400 AB2 Features: variants of gate, globe, plug and ball Type, Floating & Trunnion Mounted, End Entry, Top Entry, Cryogenic, Firesafe Certified, Anti-static, Blow-out proof stems, drain valves of ball, globe, needle. Applications: Power Generation, Chemical Processing, Gas Production, LNG, Offshore, Oil Production, Petrochemical Processing, Petroleum Production and Refining Industries: Gas Treatment, LNG, Oil and Gas, Power Generation