The alarm check valve is a wet pipe sprinkler system water-supply check valve. It is designed to hold back water pressure at the valve until such time as a sprinkler is activated.

Alarm check valves are available in three types, flange by flange, flange by groove and groove by groove. Each valve type is available in 3”, 4” and 6” sizes.

They may be installed vertically or horizontally in the mail supply to wet type sprinkler system.

The alarm check valves are listed and approved by UL for use in fire sprinkler system with a maximum working pressure of 300 psi.

  • Alarm check valves are used in wet pipe fire sprinkler system.
  • Alarm Check Valve acts as a water flow alarm device
  • The slanted cover makes maintenance and repair easier.
  • Groove dimensions comply with AWWA C606 standard.
  • It may be installed in both vertical and horizontal position.
  • Maximum working pressure of 300 psi (25bar)
  • Factory tested hydrostatically to 600 psi (41.4bar)
  • Constructed of high tensile strength ductile iron
  • Each of our products will be tested and inspected thoroughly before the delivery
  • UL EX16215 300 PSI alarm check valve
3"/80AOutside Diameter(OD)Bolt Circle DiameterDiameter of HolesThickness
JIS 10K1851501918
JIS 16K2001602320
PN162001601919
150LB190.5152.43/4"23.8
4"/100AOutside Diameter (OD)Bolt Circle DiameterDiameter of HolesThickness
JIS 10K2101751918
JIS 16K2251852322
PN162201801919
Class 1252301913/4"23.8
150LB228.6190.53/4"23.8
Class 150 (PN20)230190.51824
6"150AOutside DiameterBolt Circle DiameterDiameter of HolesThickness
JIS 10K2802402322
JIS 16K3052602524
PN162852402319
Class 1252802417/8"25.4
150LB279.4241.37/8"25.4
Class 15 (PN20)280241.52225.5

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Product NameSizeMaterial
3"Alarm check valve(F*F)3" (80A)Ductile Iron
4"Alarm check valve(F*F)4" (100A)Ductile Iron
6"Alarm check valve(F*F)6" (150A)Ductile Iron
3"Alarm check valve(F*G)3" (80A)Ductile Iron
4"Alarm check valve(F*G)4" (100A)Ductile Iron
6"Alarm check valve(F*G)6" (150A)Ductile Iron
3"Alarm check valve(G*G)3" (80A)Ductile Iron
4"Alarm check valve(G*G)4" (100A)Ductile Iron
6"Alarm check valve(G*G)6" (150A)Ductile Iron
Product NameSizeMaterial
3"Alarm check valve(F*F)3" (80A)Ductile Iron
4"Alarm check valve(F*F)4" (100A)Ductile Iron
6"Alarm check valve(F*F)6" (150A)Ductile Iron
3"Alarm check valve(F*G)3" (80A)Ductile Iron
4"Alarm check valve(F*G)4" (100A)Ductile Iron
6"Alarm check valve(F*G)6" (150A)Ductile Iron
3"Alarm check valve(G*G)3" (80A)Ductile Iron
4"Alarm check valve(G*G)4" (100A)Ductile Iron
6"Alarm check valve(G*G)6" (150A)Ductile Iron