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Recommend
NAI-LOK 2" to 3" Double Block & Bleed Valve - Alloy & 316, ANSI Flange, 1440 PSI
NAI-LOK DBB Safety: Provides dual independent seals and a bleed port for maximum isolation safety, allowing cavity pressure release and seal verification.
Material Versatility: Available in robust SS316 Stainless Steel for general corrosion resistance and high-performance Alloys (like Duplex 2205/Alloy C276) for severe service in corrosive and high-strength applications.
Robust Flanged Design: Features 2" x 3" ANSI Class 150/300/600 flanges for secure, bolt-on connections that simplify installation and handle high pipe loads.
Built for High Pressure: Engineered to withstand demanding pressures, with ratings up to 1440 PSI (Class 600) for critical oil, gas, and chemical applications.
Compact & Leak-Reduced Design: The integrated DBB body eliminates multiple separate valves, reducing overall footprint, weight, and potential leak paths.
- Technical Parameters
- Main feature
- Operating range
| Parameter | Specification |
|---|---|
| Product Type | Double Block and Bleed (DBB) Flange Valve |
| Brand | NAI-LOK |
| Size | 2" x 3" (Nominal Pipe Size) |
| End Connection | ANSI Class 150/300/600/900/1500 Raised Face (RF) Flanges |
| Design Standard | API 6D, ASME B16.34 |
| Pressure Rating | Class 600: 1440 PSI @ 100°F (38°C) |
| Temperature Range | SS316: -20°F to 800°F (-29°C to 427°C) [1] Alloy (e.g., Duplex): -20°F to 600°F (-29°C to 316°C) [1] |
| Body Material Options | Option A: ASTM A182 F316 (SS316) Option B: ASTM A182 F51/F53/F55 (Duplex/Super Duplex) Option C: ASTM B564 / B574 (Alloy C276/C22) |
| Seat & Seal Material | RPTFE / PEEK / Metal Seated (Standard or on request) |
| Bleed Port | 1/2" NPT Female (Standard) |
| Fire Safe Design | API 6FA / API 607 (Optional) |
| Test & Leakage | Hydro Test: API 598 / ISO 5208 Rate A |
