Product Overview The PS10-1 is a pressure-actuated switch engineered to detect waterflow conditions in a variety of automatic fire sprinkler system designs, including wet pipe systems with alarm check valves, as well as dry pipe, pre-action, and deluge configurations. In addition to flow detection, it can function as a low-pressure supervisory switch with an adjustable range from 4 to 15 PSI (0.27–1.03 BAR).

Built with a die-cast, NEMA 4/IP55 rated enclosure and a non-corrosive ½" NPT nylon pressure connection, the device is suitable for indoor or outdoor installations when paired with appropriate conduit fittings. It includes two isolated wiring chambers, dual ½" conduit knockouts, and one SPDT Form C contact. Factory adjustment is set between 4–8 PSI (0.27–0.55 BAR), with a typical differential of 2 PSI (0.13 BAR). The PS10-1 supports system pressures up to 300 PSI (20.68 BAR) and is UL, cUL, CSFM Listed, FM and LPC Approved, and NYMEA accepted.

Key Features

- Detects waterflow conditions in wet, dry, pre-action, and deluge sprinkler systems
- Adjustable low-pressure supervisory range: 4–15 PSI (0.27–1.03 BAR)
- NEMA 4/IP55 die-cast enclosure with textured red powder-coat finish
- Non-corrosive ½" NPT male nylon pressure connection
- Two ½" conduit knockouts with isolated wiring chambers for dissimilar voltages
- One SPDT (Form C) switch rated at 10.1A at 125/250 VAC, 2A at 30 VDC
- Maximum system pressure: 300 PSI (20.68 BAR)
- Operating temperature range: –40°F to 140°F (–40°C to 60°C)
- Compliant with NFPA-13D, NFPA-13R, and NFPA-72 service requirements