Watts 740-040 1 - Part of the 740 Series

This 1 inch boiler pressure relief valve is 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. It 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, not as an operating control. The pressure relief is set at 40 psi (2.76 bar) with corresponding steam pressure discharge capacity up to 1,240,000 BTU/hr.

Features

• Spring loaded
• Soft seated
• Iron body
• Automatic reseating

Specifications
Body Material	Iron
Brand	Watts
Buy American Act Compliant	NO
EAN	098268019117
Inlet Connection Size	1 IN
Inlet Connection Type	Female Threaded
Inlet Thread Type	NPT
Lead Free	Not In Scope
Outlet Connection Size	1 1/4 IN
Outlet Connection Type	Female Threaded
Outlet Thread Type	NPT
Part Number	0382589
Pressure Range	30 to 75 PSI
Pressure Relief Setting-PSI	40
Series	740

• Specification Sheet - 174A, 374, 740
• Specification Sheet - 174A, 374, 740 (French)
• Specification Sheet - 174A, 374, 740 (Spanish)
• Specification Sheet - Flood Sensor for Relief Valve Discharge Line
• Specification Sheet - Flood Sensor for Relief Valve Discharge Line (French)
• Specification Sheet - Flood Sensor for Relief Valve Discharge Line (Spanish)
• Specification Sheet - Relief Valve Flood Sensor Retrofit Connection Kit
• Specification Sheet - Relief Valve Flood Sensor Retrofit Connection Kit (French)
• Specification Sheet - Relief Valve Flood Sensor Retrofit Connection Kit (Spanish)

UPC - 098268019117