Product Overview
The Consolidated 1811 and 1511 series are ASME-certified spring-loaded safety relief valves for protecting equipment from overpressure in steam, gas, and liquid systems. The 1811 is conventional full-nozzle type, while 1511 provides balanced bellows or high-performance options. They are trusted in critical applications for repeatable pop action and tight shut-off.
Features
- Full-nozzle construction for high flow capacity
- Adjustable blowdown for precise control
- Balanced bellows in 1511 – handles variable backpressure
- Metal-to-metal or soft-seated trim
- Open bonnet for high-temperature service
- Robust spring and disc design
- Certified for multiple media types
Technical Specifications
- Orifice Sizes: D to Q (API 526)
- Inlet/Outlet Sizes: ½" D 2" to 6" Q 8" typical
- Set Pressure: 15 to 6000 psig
- Temperature Range: –423 °F to +1000 °F
- Body Materials: Carbon steel, stainless steel, chrome-moly
- Disc/Seat: Stainless steel, Stellite facing
- Leakage: API 527 tight seating
- Certification: ASME Section VIII, API 526/527
Applications
- Steam drum and superheater relief
- Pressure vessel overpressure protection
- Gas compressor discharge safety
- Refinery and chemical process safety
FAQ
Q: Balanced bellows benefit?
A: Reduces backpressure influence on set pressure (1511 model).
Q: High-temperature use?
A: Yes – open bonnet and special materials support it.
Contact Us
Email: edwardzhao@gbsxj.com
Phone/WeChat/WhatsApp: +8615000725058
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