Watts F383800 1-1/2″ x 2″ Model 740 Boiler Pressure Relief Valve w/ Flood Sensor Connectivity (60 psi)

Description

The Watts F383800 is a heavy-duty 740 Series pressure relief valve engineered for reliable overpressure protection in commercial and industrial boiler and hydronic heating systems. With a 1-1/2″ inlet and 2″ outlet configuration, a 60 PSI set pressure, and an impressive 4,907,000 BTU/hr rated capacity, this valve is built to handle demanding high-output heating applications with confidence.

Key Features

• Model series: Watts 740 — a trusted standard in boiler pressure relief protection
• Set pressure: 60 PSI (60#) for precise, consistent pressure relief
• Inlet x outlet: 1-1/2″ x 2″ (1.5″ x 2″) for optimized flow and discharge
• Designed for hot water boiler and hydronic heating system applications
• Durable construction for long service life in commercial environments

Application

The Watts 740 Series pressure relief valve is the go-to solution for protecting boilers and hydronic heating systems from dangerous overpressure conditions. When system pressure exceeds the 60 PSI set point, the valve opens automatically to discharge excess pressure and safeguard equipment, piping, and personnel. The large capacity rating makes the F383800 ideal for large commercial and light industrial boiler installations where high heat output demands reliable, code-compliant relief protection.

Specifications

• SKU: F383800
• Brand: Watts
• Model Series: 740
• Set Pressure: 60 PSI
• Inlet Size: 1-1/2″
• Outlet Size: 2″