• Boiler Pressure Relief Valve
• Type Lever
• Inlet Size 3/4 Inch
• Outlet Size 3/4 Inch
• End Connection Female Threaded x Female Threaded
• Body Material Bronze
• Spring Material Stainless Steel
• Seat Material Metal
• Disc Material Non-Metallic
• Set Pressure Range 50 PSI
• Temperature Rating 250 Deg F
• Pressure Rating 30 to 150 PSI
• Inclusions/Features Seat Located Above Drain， Non-Metallic Disc to Metal Seat， Test Lever
• Application Hot Water Heating Boiler
• Applicable Standard ASME， NB， HV， MIL-V-18634B， Type I， Class 3A， Style A
• Capacity 650000 to 2445000 BTU/Hour
• Overall Dimension 2-3/4 Inch Width x 4-1/2 Inch Height

Features / Benefits

• Seat Located Above Drain
• Water Can't be Trapped and Sediment Can't Foul Seat
• Non-Mechanical Seat to Disc Alignment will Not Stick or Freeze
• Water Seal of High Temperature Resisting Material Isolates Spring Working Parts from Water During Relief
• Series 174A Resists Corrosive Water Conditions， Sticking and Freezing and Prevents Water and Sediment from Being Trapped in the Seat
• It is Designed for Emergency Safety Relief and Shall Not be Used as an Operating Control