Home > Product > Needle valve > By End Connection > Double Block & Bleed Needle Valve Manufacturer in India
Triple Protection. Total Isolation. Zero Compromise.
Perfect Engineers manufactures robust, precision-engineered Double Block & Bleed Needle Valves (DBB) designed to offer positive isolation and controlled pressure bleed in critical instrumentation systems. Built for high-pressure applications, our DBB valves combine two shut-off valves and a bleed valve into a single compact unit, reducing leak paths and installation space.
From oil & gas to refineries, offshore platforms, and chemical plants, these valves provide the safety and performance assurance required for hazardous service.
A Double Block & Bleed Needle Valve (DBB) integrates two needle-type isolation valves (block valves) and one bleed valve into one body. This setup ensures complete isolation of the process media and safe venting or calibration through the bleed port—without needing external piping or multiple connections.
Best suited for instrumentation tapping lines, gauge calibration, and critical pressure isolation where safety and leak prevention are paramount.
| Parameter | Specification |
|---|---|
| Valve Configuration | Block–Bleed–Block (DBB) |
| Pressure Rating | 6000 PSI to 10,000 PSI |
| Temperature Range | -29°C to +450°C |
| End Connection Types | BSP/NPT Threaded, Flanged (ANSI/DIN), Compression, SW/BW |
| Valve Operation | Manual (T-bar/Knob/Locking handle) |
| Material Options | SS, CS, Monel, Hastelloy, Duplex, Inconel |
| Testing Standard | API 598 / BS EN 12266-1 |
| Certifications | ISO 9001:2015, EN 10204 3.1, CE, IBR, TPI |
| Connection Type | Use Case |
|---|---|
| Threaded (BSP/NPT) | Instrument tubing, gauge taps, sampling points |
| Flanged (ANSI/DIN) | Inline process piping, chemical plants |
| Compression End | Analyzer loops, instrumentation panels |
| SW/BW Ends | Permanent welded installations |
+91-9004860491
www.perfectqrc.com
India Cities: Mumbai, Pune, Ahmedabad, Baroda, Hyderabad, Chennai, Cochin, Ankleshwar, Bengaluru, Delhi
Export Markets: UAE, Saudi Arabia, Germany, Egypt, Qatar, Indonesia, Iraq, Oman, South Korea, Canada, South Africa
Yes, we offer DBB valves with ANSI, DIN, and JIS flanges, customized per your project specs.
Yes, with proper cleaning and compatible seat selection (PTFE/PEEK/metal), they are ideal for gases including H₂, O₂, N₂, and CO₂.
Yes. We provide GA drawings, MTO sheets, and 3.1 material certificates for every order.
Standard SS models can ship in 7–10 working days. Exotic materials or flanged versions may take 2–3 weeks.
Copyrights © 2025 Perfect Engineers. All rights reserved. Developed & Managed by AdinAds