Oliver N Type Double Block & Bleed Valve
Rp123000.00
The Oliver N Type Double Block & Bleed Valve is a high-integrity forged-body valve featuring three heavy-duty needle valves—two for isolation and one for venting. Designed for applications where precise control, pressure integrity, and minimal leak paths are critical, this valve type is ideal for instrument isolation, sampling, and chemical injection systems.
Forged from a single-piece body with grain flow control, the N Type offers exceptional strength and durability. It is well-suited for use in sour service and high-temperature environments, with full compliance to NACE MR-01-75 and Firesafe standards.
Technical Specifications
Parameter | Specification |
Manufacturer | Oliver Valves |
Model | N Type Double Block & Bleed (DBB) |
Valve Configuration | 3 Needle Valves (2 Isolation + 1 Vent) |
Body Design | One-piece drop forged body, grain flow controlled |
Body Material | ASTM A182 F51 (Duplex Stainless Steel) |
Flange Material | ASTM A182 F51 |
Size Range | DN15 to DN50 (1/2” to 2”) |
Pressure Class Range | Class 150 to 2500 |
Seat Type | Metal-to-metal (Needle Tip) |
Seal & Gland Packing | Graphite |
Needle Bore Size | 5.4 mm (0.23”) |
Operation | Screw-down tee bar handle |
Vent Connection | 1/2” NPT Female |
Outlet Connection | Flanged or threaded (configurable) |
Certifications | Firesafe (API 607, API 6FA, BS 6755 Part 2), NACE MR-01-75 |
Applications | Instrument isolation, sampling, drain, chemical injection, sour service lines |
