WATTS® 0382570 740 Pressure Relief Valve, 1 in Nominal, FNPT End Style, 30 psi Pressure, Iron Body, Domestic

WA740AK30 MFG #: 0382570

Country of Origin: US
Domestic/Import: Domestic
End Style: FNPT
Manufacturer Name: Watts Water Technologies
Media: Water
Nominal Size: 1 in
Series: 740, 740-030

Series 740 Boiler Pressure Relief Valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of a iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists 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. Pressure Range: 30 to 75psi (2 to 5 bar) with corresponding high ratings from 925,000 to 10,700,000 BTU/hr.

Features and More

Features

Automatic reseating
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
Nonmetallic disc-to-metal seating
The discharge line must be the same size as the valve outlet, and must pitch downward from the valve to a safe place for disposal
Valve lever must be tripped at least once a year to ensure that waterways are clear, This device is designed for emergency safety relief and shall not be used as an operating control

Application

Pressure Protection of Hot Water Heating Boilers

Standards/Approvals/Certifications

ASME Section IV
MIL-V-18634B
PROP65: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm.

Warranty

Limited