High Capacity Consolidated Type 1900/P Type ASME Certified Spring Loaded Safety Relief Valve for Boiler & Pressure Vessel

The Consolidated 1900/P is a balanced bellows safety relief valve in the 1900 series, built for applications where backpressure varies or containment of emissions is required. It provides full-lift, pop-action relief with tight seating and is ASME-certified for steam, gas, and liquid overpressure protection in critical process systems.

• Balanced bellows – eliminates backpressure effect on set pressure
• Full nozzle and disc design for high flow capacity
• Adjustable blowdown ring
• Multiple bonnet styles (open/closed)
• Corrosion-resistant trim options
• High-temperature and high-pressure capability
• Certified for multiple media types

• Orifice Designation: D to T (API 526)
• Inlet/Outlet Sizes: ½" D 2" to 8" T 10" typical
• Set Pressure: 15 to 6000 psig
• Temperature Range: –423 °F to +1000 °F
• Body Materials: Carbon steel, stainless steel, alloy steel
• Disc/Seat: Stainless steel, Stellite facing
• Leakage: API 527 tight seating
• Certification: ASME Section VIII, API 526/527

• Boiler and superheater overpressure protection
• Pressure vessel safety relief
• High backpressure systems
• Refinery process safety
• Gas and vapor relief

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• Consolidated 1900 conventional series
• Consolidated 2900 / 3900 balanced bellows
• Consolidated pilot-operated relief valves