Fire Protection OS&Y Gate Valve With Tamper Switch
Valve tamper switches are mounted on the various fire sprinkler control valves to monitor the position of the valve.
It's critical that the sprinkler control valves remain open because, otherwise, the water will not flow through the pipes when there is a fire emergency
Fujian Haijing Fire Fighting Equipment Co., Ltd. is one of the leading manufacturers and suppliers of fire protection os&y gate valve with tamper switch in China, also supports customized service. Please feel free to wholesale cheap fire protection os&y gate valve with tamper switch from our factory.
Technical Pameters
Standard: AWWA C515, C509
Connection: Flanged as B16.1 Class 125, B16.5 Class 150, Mechanical joint as ANSI/AWWA C153/A21.53 etc.
Indicator: Non / with Supervisory Switch
Temperature: 0°C to 80°C
W. pressure: 300 psi
Surface: Powder Coating
Image Details
Can one tamper switch serve two OS&Y valves on a double-check detector assembly?
No; each valve requires its own individually supervised switch because the closed position of each must be verified independently for the sprinkler system to remain in "service" condition.
Company Information
FAQ
Q: What is the minimum clearance above the hand-wheel for maintenance?
A: NFPA 13 requires 305 mm (12 in.) free space so the locking cap and switch can be removed; in tight pump rooms, specify a yoke extension spindle to relocate the hand-wheel to an accessible aisle.
Q: How does the tamper switch know someone is touching the hand-wheel?
A: The switch is a Class-B reed type whose arm is trapped under the yoke locking cap; the moment the hand-wheel nut is rotated even ¼-turn, the magnet moves away, the reed opens, and the fire panel receives a "supervisory" signal within 3 seconds.
Contact Information
Send us your enquiry, we will reply In 24 Hours!
WhatsApp/WeChat: +86 18359194029
E-mail: sales03@sanjingfire.com
Add: Maosheng RD., Fumao Economic Zone, Nan'an City, Fujian, China, 362300
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