Stainless Steel Double Block and Bleed (DBB) Valves - 316/316L & Duplex, Flanged, Fire-Safe to

Product Details

Double block and bleed valves combining primary and secondary isolation with a bleed port in one compact unit, reducing leakage paths and piping. ANSI B16.5 flanged inlet 1/2 in - 3 in (Class 150 - 2500); 1/2 in - 1 in NPT female outlet; 1/2 in NPT vent. Body SS ASTM A182 F316/F316L, CS A350 LF2/A105 or Duplex A182 F51; 304 SS trim; fire-safe to BS 6755 Part 2 / API 607; heat-code traceable to EN 10204 3.1. Max cold working pressure 6,000 psig (414 bar) PTFE seats (-54 to 204 C) or 10,000 psig (690 bar) PEEK seats (-54 to 232 C).

Material: SS ASTM A182 F316/F316L; CS A350 LF2/A105; Duplex A182 F51; 304 SS trim
Size range: Flanged 1/2 in - 3 in (DN15 - DN80); NPT outlet 1/2 in - 1 in
Working pressure: 6,000 psig (414 bar) PTFE seats; 10,000 psig (690 bar) PEEK seats; body to Class 2500
Connection: ANSI B16.5 flange / NPT female (outlet & vent)
Certificate: EN 10204 3.1 material test certificate with every shipment.
OEM / ODM accepted. Free samples for standard sizes.

Applications: chemical processing, petrochemical, power generation, oil and gas, semiconductor, pulp and paper, water treatment and laboratory analysis systems.
Quality: 100% pressure tested before shipment; EN 10204 3.1 MTC with heat number traceability; ISO 9001 certified manufacturing.
Packing: each piece poly-bagged and capped, carton box inside and seaworthy plywood case outside; export standard marking.
Delivery: 15-20 days for standard sizes after order confirmation; 25-30 days for customized configurations.
Payment: T/T 30% deposit, balance against copy of B/L; L/C at sight acceptable.

Nantong Samson Precision Industry Co., Ltd. is a manufacturer based in Nantong, Jiangsu, China, specialized in 316/316L stainless steel instrumentation valves, double ferrule tube fittings, hydraulic fittings and high pressure pipeline components rated 6000-10000 psi. Our products are interchangeable with major international brands and are exported to Europe, North America, Southeast Asia and the Middle East. Contact us for drawings, samples or OEM projects.