Watts 0121499 1" Female NPT 50 to 150 PSI Lead Free Copper Silicon Alloy Boiler Pressure Relief Valve

This 1 inch lead free boiler pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a lead free body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It 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, not as an operating control. The pressure setting is 100 psi (689.5 kPa), with corresponding ratings of 2,635,000 BTU/hr.

Features:

Spring loaded
Non mechanical seat-to-disc alignment will not stick or freeze
Lead free body
Automatic reseating

Specifications:

Manufacturer: Watts
Manufacturer Part Number: 0121499
Product Type: Boiler Pressure Relief Valve
Material: Lead Free Copper Silicon Alloy
Connection Size: 1" Female NPT
Maximum Working Pressure: 75 PSI
Pressure Range: 50 to 150 PSI
Pressure Relief Setting: 100 PSI
Dimensions: 6.15" x 4.7" x 2.7"
Weight: 2.0 lb.

Tech Sheet