Sporlan Controls 402529 1-1/4″ Male NPT x 1-1/2″ Female NPT 40 PSI ASME Steam Pressure Relief Valve

Description

The Sporlan Controls 402529 is a heavy-duty ASME Section VIII–listed steam pressure relief valve engineered for reliable overpressure protection in commercial and industrial steam systems. With a 1-1/4″ Male NPT inlet and a 1-1/2″ Female NPT outlet, this valve integrates seamlessly into standard steam piping configurations and delivers consistent, code-compliant performance.

Factory set at 40 PSI, the valve automatically opens to safely discharge excess steam pressure before system limits are exceeded, then reseats to restore normal operation. A rated capacity of 1,470 pounds per hour ensures adequate relief flow for a wide range of boiler and steam system applications. The plain lever design allows for manual testing and verification of valve operation without the need for additional tools.

Key Features

• ASME Section VIII certified for steam pressure relief applications
• 1-1/4″ Male NPT inlet x 1-1/2″ Female NPT outlet connections
• Factory set relief pressure: 40 PSI
• Rated capacity: 1,470 pounds per hour (steam)
• Stainless steel trim for corrosion resistance and long service life
• Metal seat construction for positive, leak-free reseating
• Plain lever for manual lift testing and field verification

Application

Ideal for use on steam boilers, pressure vessels, and steam distribution systems where ASME-compliant overpressure protection is required. The stainless steel trim and metal seat combination ensures durability in demanding steam environments, while the plain lever facilitates routine maintenance inspections.

Specifications

• SKU: 402529
• Brand: Sporlan Controls
• Inlet Connection: 1-1/4″ Male NPT
• Outlet Connection: 1-1/2″ Female NPT
• Set Pressure: 40 PSI
• Capacity: 1,470 Lbs/Hr (Steam)
• Trim Material: Stainless Steel
• Seat Material: Metal
• Lever Type: Plain
• Certification: ASME Section VIII