The Potter Electric Signal VSR-8 is a vane-type waterflow alarm switch for 8″ sprinkler pipe. It detects water movement in wet-pipe sprinkler systems. As a result, it signals the fire alarm panel when flow indicates a possible fire. Specifically, the VSR-8 fits 8″ (DN200) steel pipe, schedules 10 through 40.
How the Potter Electric Signal VSR-8 operates
A paddle inserts through the pipe and moves when water flows. Then, after a set retard period, the switch activates. This adjustable pneumatic retard runs from 0 to 90 seconds. Therefore, it helps prevent false alarms from surges or trapped air. The switch activates on a continuous flow of 10 GPM or more.
Key features
- Sized for 8″ (DN200) steel pipe, schedule 10-40
- UL Listed and FM Approved for 2″-8″ pipe in this range
- Two SPDT (Form C) snap-action switch contacts
- Field-replaceable 0-90 second pneumatic retard
- Weatherproof enclosure with tamper-resistant cover
Specifications
- Contact rating: 10.0 A at 125/250 VAC; 2.0 A at 30 VDC resistive
- Service pressure: up to 450 PSI
- Operating temperature: 40°F to 120°F (4.5°C to 49°C)
- Maximum surge: 18 FPS
- Enclosure: NEMA 4 / IP54; composite cover with die-cast aluminum base
- Conduit: two 1/2″ knockouts
- Standards: NFPA 13, 13D, 13R, and 72
First, mount the VSR-8 on top of a horizontal pipe or on vertical pipe. Then orient the saddle arrow in the direction of waterflow. Also, keep it clear of fittings, valves, and drains as the instructions require. However, do not install this device in hazardous locations. Finally, set the retard to the minimum delay needed to avoid false alarms.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 8.12 lbs |
|---|---|
| Dimensions | 3 × 5.6 × 5.3 in |
| Condition | New |
| Manufacturers | Potter |
| Part Type | Replacement Part |
