Consolidated 1700, 2700 and 3700 series are direct spring-loaded safety relief valves designed for overpressure protection in industrial processes. The 1700 is a conventional valve, 2700 is balanced bellows type, and 3700 is a high-capacity model. They are widely used in refineries, petrochemical plants, and power generation for steam, gas, and liquid service where reliable pop action and tight seating are critical.

• Direct spring-loaded design – fast, full-lift pop action
• Balanced bellows option (2700) – minimizes backpressure effects
• High-capacity nozzles and discs (3700)
• Adjustable blowdown ring for performance tuning
• Metal-to-metal or soft-seated options
• Open or closed bonnet configurations
• High corrosion resistance with special materials

• Orifice Sizes: D to T (API 526 standard)
• Inlet Sizes: 1" to 8"
• Outlet Sizes: 2" to 12"
• Set Pressure Range: 15 to 6000 psig (1 to 414 bar)
• Temperature Range: –423 °F to +1500 °F (–253 °C to +816 °C) depending on materials
• Body Materials: Carbon steel, stainless steel, alloy steel
• Disc Materials: Stainless steel, Stellite hard-faced
• Leakage: API 527 tight seating
• Certification: ASME Section VIII, API 526/527

• Steam boiler drum and superheater protection
• Pressure vessel overpressure relief
• Gas and liquid hydrocarbon systems
• Refinery and petrochemical process lines
• High-temperature steam service

Email: edwardzhao@gbsxj.com

Phone/WeChat/WhatsApp: +8615000725058

• Consolidated 1900 series (smaller orifices)
• Consolidated 2900 / 3900 balanced bellows valves
• Consolidated pilot-operated relief valves