MODEL H-2 ALARM VALVE
VERTICAL TRIM CONSTANT PRESSURE
When a sprinkler (1) opens, the discharging water
lifts the alarm valve clapper (2) and flows through the
alarm prot (3) to the retard chamber (4). When the
retard chamber is filled, water flows to the water motor
alarm (5) and/or the optional pressure switch (6) which
signals an electric alarm bell.
Pressure-activated switches can be wired for either
normally open or normally closed circuit operation.
to prevent false alarms due to variable water
supplies, the Viking retard chamber collects small
surges of water which flow through the alarm port during
Viking's alarm TEST an DRAINT™ valve is available to
verify correct valve clapper movement when testing the
water motor alarm.