Everlasting 4000S (57) - Steel, 1-1/2" NPT, Quick Open Blowdown Valve

The 4000-S 57 1-1/2 is a 300 class steel blowdown valve with 1-1/2" NPT connections, and is rated for blow-off service up to 485 PSIG. The 4000 series features a heavy spring hold disc that, when actuated, slides across the body seat pushing harmful boiler scale away, and wiping clean the precision lapped surface.

Details:

• 1-1/2" inlet and outlet
• Primary service rating: 300 PSI
• Suggested operating pressure: 200 PSI
• Maximum boiler blow-off pressure: 485 PSI
• Steel body construction
• Straight-through flow
• Leak proof seal disc has self lapping action, actually improves with use
• Self wiping action of disc – cannot hang-up on boiler scale