Description
The Watts 0379114 LF777SI is a 1-1/4″ lead-free reduced pressure zone (RPZ) backflow preventer engineered to protect potable water supplies from contamination due to backpressure or backsiphonage. Designed for demanding commercial and industrial plumbing applications, this assembly meets lead-free compliance requirements, making it suitable for use in systems supplying drinking water.
Product Overview
The LF777SI series is a trusted solution for cross-connection control in hydronic, irrigation, and commercial plumbing systems. Its reduced pressure zone design provides the highest level of backflow protection available, guarding against both back-pressure and back-siphonage conditions. The “SI” designation reflects stainless steel internal components for enhanced corrosion resistance and long service life.
Key Features
- Lead-free (LF) construction compliant with NSF/ANSI 61 and Safe Drinking Water Act requirements
- 1-1/4″ pipe size for medium-flow commercial applications
- Reduced pressure zone (RPZ) design — highest grade of backflow protection
- Stainless steel internal components (SI) for superior corrosion resistance
- Suitable for backpressure and backsiphonage conditions
- Designed for commercial, industrial, and institutional plumbing systems
- Serviceable in-line for ease of maintenance
Applications
- Commercial and institutional potable water systems
- Irrigation and lawn sprinkler systems
- Hydronic heating and cooling systems
- Industrial process water lines
- Cross-connection control programs
Specifications
- Brand: Watts
- SKU: 0379114
- Model: LF777SI
- Pipe Size: 1-1/4″
- Type: Reduced Pressure Zone (RPZ) Backflow Preventer
- Material: Lead-free body with stainless steel internals
