The Potter Electric Signal VSR-10 is a vane-type waterflow alarm switch for 10″ wet sprinkler pipe. First, it mounts on horizontal pipe (top side) or vertical pipe using a U-bolt saddle. Then, flow downstream of the device pivots the vane and trips two SPDT switches.
How the Potter Electric Signal VSR-10 works
A minimum flow of 10 GPM (38 LPM) activates the device. In addition, an adjustable 0-90 second pneumatic retard suppresses false alarms from pressure surges. As a result, the switch signals only sustained flow indicating an open sprinkler head. Specifically, it is UL and cUL Listed for schedule 10 through 40 steel pipe at 10″ nominal size.
VSR-10 specifications
- Pipe size: 10″ nominal (DN250), schedules 10-40 (UL)
- Nominal pipe O.D.: 10.750″ (273.0 mm)
- Contacts: two SPDT (Form C), 10A at 125/250VAC; 2A at 30VDC resistive
- Activation flow: 10 GPM (38 LPM) minimum
- Retard: 0-90 second adjustable, instantly recycling
- Service pressure: 300 PSI (20.7 BAR)
- Maximum surge: 18 FPS (5.5 m/s)
- Operating temperature: 40°F to 120°F (4.5°C to 49°C) – UL
- Enclosure: composite cover, die-cast aluminum base, NEMA 4 / IP54
- Conduit: two 1/2″ knockouts; separate switch compartments for dissimilar voltages
- Listings: UL Listed, cUL Listed; service per NFPA 13, 13D, 13R, and NFPA 72
- Potter part number: 1144410
Installation notes
Therefore, install the device at least 6″ from any fitting that changes flow direction. Also, keep at least 24″ between the VSR-10 and any valve or drain. Finally, the retard/switch assembly (stock 1029030) is field-replaceable without draining the system.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 11 lbs |
|---|---|
| Dimensions | 12 × 10 × 17 in |
| Condition | New |
| Manufacturers | Potter |
| Part Type | Replacement Part |
