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
EX16215 
| 3"/80A | Outside Diameter(OD) | Bolt Circle Diameter | Diameter of Holes | Thickness |
|---|---|---|---|---|
| JIS 10K | 185 | 150 | 19 | 18 |
| JIS 16K | 200 | 160 | 23 | 20 |
| PN16 | 200 | 160 | 19 | 19 |
| 150LB | 190.5 | 152.4 | 3/4" | 23.8 |
| 4"/100A | Outside Diameter (OD) | Bolt Circle Diameter | Diameter of Holes | Thickness |
|---|---|---|---|---|
| JIS 10K | 210 | 175 | 19 | 18 |
| JIS 16K | 225 | 185 | 23 | 22 |
| PN16 | 220 | 180 | 19 | 19 |
| Class 125 | 230 | 191 | 3/4" | 23.8 |
| 150LB | 228.6 | 190.5 | 3/4" | 23.8 |
| Class 150 (PN20) | 230 | 190.5 | 18 | 24 |
| 6"150A | Outside Diameter | Bolt Circle Diameter | Diameter of Holes | Thickness |
|---|---|---|---|---|
| JIS 10K | 280 | 240 | 23 | 22 |
| JIS 16K | 305 | 260 | 25 | 24 |
| PN16 | 285 | 240 | 23 | 19 |
| Class 125 | 280 | 241 | 7/8" | 25.4 |
| 150LB | 279.4 | 241.3 | 7/8" | 25.4 |
| Class 15 (PN20) | 280 | 241.5 | 22 | 25.5 |
| Product Name | Size | Material |
|---|---|---|
| 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 Name | Size | Material |
|---|---|---|
| 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 |
