Alarm valves & monitoring
محابس الإنذار
Alarm valves and supervisory devices turn a flowing sprinkler into a signal on the fire panel and a ringing gong outside the building.
NFPA 72UL / FM listedCivil Defense ready
Equipment
What we supply & install
Wet alarm check valve
UL / FMSizes2½″ – 8″
Rating300 psi
TrimRetard chamber + water motor gong
Flow switch
SIGNALTypeVane, 2″ – 8″
Rating450 psi · UL / FM
SignalAdjustable delay
Tamper switch
SUPERVISORYTypeSupervisory SPDT
FitsOS&Y, butterfly
Pressure gauge
MONITORDial4″, 0–300 psi
MediumWater / air
How a wet alarm valve works
From a bursting bulb to a signal at the panel in five steps.
- STEP 01
Standby
The clapper stays closed; pressure is equal on both sides and gauges read the same.
- STEP 02
Sprinkler opens
A head bursts from heat. Water flows and pressure above the clapper drops.
- STEP 03
Clapper lifts
Water pushes the clapper open and enters the alarm line.
- STEP 04
Alarm sounds
The water motor gong rings and the pressure switch signals the fire panel.
- STEP 05
Retard chamber
Absorbs short surges so pressure spikes don't cause false alarms.
Brands
Fire alarm & detection: Apollo
Have drawings or a BOQ?