WEFLO PRESSURE SWITCH WPS10-1, UL/FM

WEFLO PRESSURE SWITCH WPS10-1 The Weflo WPS10-1 is a UL / ULC Listed and FM Approved pressure-activated switch designed for reliable detection of waterflow conditions in automatic fire sprinkler systems. It is ideal for use in wet pipe systems with alarm check valves, dry pipe, pre-action, and deluge systems. Key Features & Specifications One Set of SPDT (Single Pole Double Throw) Contacts — Provides versatile signaling for alarm or supervisory functions. Adjustable Pressure Range: 4–20 PSI (factory set at approximately 4–8 PSI on rising pressure). Approximate Differential: 3 PSI throughout the range. Maximum System Pressure: 300 PSI. Pressure Connection: ½" Male NPT. Contact Rating: 10A @ 125/250 VAC | 2.5A @ 30 VDC. Enclosure: Sturdy die-cast aluminum housing with red powder coat finish, NEMA 4 / IP66 rated for indoor and outdoor use. Tamper-resistant cover with special key provided. Operating Temperature: -40°C to 60°C (-40°F to 140°F). Conduit Entrances: Knockouts for ½" conduit. Approvals: UL / ULC Listed, FM Approved (additional international certifications available on select models). Applications The WPS10-1 activates an alarm when waterflow causes pressure to rise in the alarm line. It is also suitable for low-pressure supervisory signaling. Its robust construction and precise operation make it a trusted, cost-effective alternative to premium brands. WEFLO WPS10-1 DATA SHEET