3/4" Uni-Body Safety Relief Valve, Male x Female

Product Overview

The Apollo 1040705 Boiler Relief Valve is a precision-engineered safety component designed for hydronic and boiler system overpressure protection. This valve provides reliable discharge performance at a 30 PSI set pressure and is suitable for water media up to 250°F operating temperature. Constructed with a bronze body and a silicone seat, the valve ensures consistent sealing, corrosion resistance, and long-term service reliability under high-temperature and pressure cycling conditions typical of boiler applications.

Technical Specifications

• Model: 1040705
• Manufacturer: Apollo
• Product Type: Boiler Relief Valve
• Connection Type: 3/4 inch MNPT x FNPT
• Nominal Size: 3/4 inch
• Set Pressure: 30 PSI (207 kPa)
• Temperature Rating: 250°F (121°C)
• Height: 3 inches
• Media: Water
• Body Material: Bronze
• Seat Material: Silicone
• Discharge Type: Spring-actuated, direct-acting safety relief
• Application: Hot water boiler and hydronic system overpressure protection
• Mounting Orientation: Vertical installation on boiler outlet
• Compliance: ASME Section IV certified for heating boiler safety valves

Professional Notes

Install the Apollo 1040705 in accordance with ASME Section IV and local mechanical code requirements. Mount vertically with the discharge outlet unobstructed and piped to a safe drain location. Do not install shutoff valves between the boiler and relief valve. Periodically test operation per manufacturer maintenance recommendations to ensure reliable performance.

Summary

The Apollo 1040705 Boiler Relief Valve is a 3/4-inch MNPT x FNPT safety valve rated for 30 PSI and 250°F water service. Featuring a bronze body and silicone seat, it delivers dependable overpressure protection for hydronic and boiler systems in compliance with ASME Section IV standards.