Watts F1116 2 Lead-Free Relief Valve, Bronze, NPT

The Watts F1116 2 is a 2" lead-free angle-pattern pilot-operated pressure relief / sustaining / backpressure control valve with NPT connections. It features a bronze body and a buna-n seat. Rated to up to 160°F. This model is certified lead-free for potable-water installations.

This 2" threaded pressure relief, sustaining or backpressure control valve is designed to permit flow when upstream pressure is above the adjustable set point of the control pilot, and throttle toward closed when upstream pressure falls below the adjustable set point. When installed off the main line on the branch of a tee it serves as a pressure relief valve. It is normally closed and quickly opens when upstream pressure exceeds the pilot setting, relieving excess pressure. When the valve is installed in line connecting two distribution zones, it serves as a pressure sustaining control valve. When pressure in the upstream zone falls below the pilot setting it modulates toward a closed position sustaining pressure in the upstream zone. When the valve is installed in line on the discharge of a pump is serves as a backpressure control valve. When pump discharge pressure falls below the pilot setting it modulates toward a closed position increasing backpressure against the pump.

Features

• Angle pattern
• NPT threaded
• Epoxy coated
• Copper tubing/brass fittings

Common Questions

What fluid temperature can the Buna-N trim handle?

This valve is built with Buna-N elastomers, good to about 160°F. Watts offers the same body with Buna-N (to 160°F), FKM/Viton (to 250°F) or EPDM (to 300°F) — pick the elastomer for your fluid temperature, not the body.

Is this valve UL Listed and FM Approved for fire protection?

Yes — this model carries the UL listing and FM approval required for fire-protection service. Non-listed control valves cannot be substituted on a fire job even when the body and pilot are otherwise identical.

Specifications

• Type: Relief
• Size: 2"
• Inlet Size: 2"
• Outlet Size: 2"
• Connection: NPT
• Body Material: Bronze
• Seat / Seal Material: Buna-N
• Operation: Pilot-Operated Diaphragm
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: F1116 2
• Temperature: up to 160°F
• Certifications: UL, FM
• Lead-Free: Yes
• Item Type: Valve
• Control Function: Pressure Relief / Sustaining / Backpressure
• Valve Platform: Classic (F-Series)
• Body Pattern: Angle
• End Connection / Pressure Class: THD (NPT Threaded)
• Coating: Fusion-Bonded Epoxy
• UL Listed / FM Approved: Yes