The patented NIDEL Model 50H high flow double check backflow preventer is intended for irrigation purposes and designed to protect hose connections from backflow contamination in freezing and non-freezing conditions. The NIDEL Model 50 high flow double check backflow preventer automatically drains when the hose is removed and unlike single check vacuum breakers can be field tested for reliability.
Features:
- Exterior Brass (BR) or Optional: Chrome Plated (CH) finish
- (2) Check valves with molded rubber diaphragms
- Theft resistant Brass break-off set screw (50H Only)
- 3/4" female inlet hose thread
- 3/4" male outer nozzle hose thread
- Max Pressure: 125 PSI