Watts 174A-045 1 - Part of the 174A Series

This 3/4 inch 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 bronze 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 relief is set at 45 psi (310.3 kPa). Pressure Range: In 5 psi (34.5 kPa) increments from 30 to 150 psi (2 to 10 bar) with corresponding high ratings from 650,000 to 14,370,000 BTU/hr.

Features

• Bronze body construction
• Standard pressure relief setting 45 psi
• Nonmetallic disc-to-metal seating
• For hot water heating and supply boilers

Specifications
Body Material	Bronze
Brand	Watts
EAN	098268013344
Inlet Connection Size	1 IN
Inlet Connection Type	Female Threaded
Inlet Thread Type	NPT
Lead Free	NO
Maximum Working Pressure-PSI	35
Outlet Connection Size	1 IN
Outlet Connection Type	Female Threaded
Outlet Thread Type	NPT
Part Number	0275024
Pressure Range	30 to 150 PSI
Pressure Relief Setting-PSI	45
Series	174A

• 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 - 098268013344