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Fire Signal Gate Valve

Industrial valves and fittings dispatch fast — wear parts and complete machines quoted on request.

Gate Valves

Resilient and metal-seated gate valves, buried and specialty types for municipal and industrial water systems.

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A fire-signal gate valve is an OS&Y resilient gate with a supervisory switch built into the bonnet: the switch is wired back to the fire panel and reports whether the valve is fully open, so a valve closed by a cleaner at the weekend raises an alarm instead of being discovered during a fire. SPDT contact, ductile iron body, epoxy coated, EPDM wedge. NFPA practice wants this on every supervised isolation valve in a sprinkler or hydrant main — and it wants the valve also monitored for tamper, which is why some sites pair it with a lock.

General Specifications

MonitoringSupervisory (limit) switch
AlarmTo fire control panel
Switch typeSPDT contact
OperationHandwheel
ApplicationSprinkler / hydrant mains
Pressure RatingPN10 / PN16
Max. Working Temperature0 – 80 °C (EPDM seat)

Materials & Coating

BodyDuctile iron, epoxy coated; duplex 2205 / 2507 available on request
WedgeDuctile iron, EPDM-encapsulated

Design Features

Why it mattersConfirms open / closed status remotely; prevents unauthorised closure

Applications

Sprinkler system mains Hydrant lines Fire pump rooms

More from this series

Fire Signal Gate Valve — Angled view of the red flanged body with handwheel and signal switchFire Signal Gate Valve — Front view of the complete valve with top handwheel and signal switch

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