Manual Diaphragm Valve

SANJING FIRE pre-action sprinkler system alarm valve is a type of valve used in fire protection systems. It is a combination of a pre-action valve and an alarm valve.

Pre-action sprinkler systems are fire protection systems that use a combination of air and water to control the spread of fire. Unlike traditional wet pipe sprinkler systems, pre-action systems do not have water in the pipes until a fire is detected. Instead, the system is filled with pressurized air or nitrogen, which holds a valve closed and prevents water from entering the pipes.

When a fire is detected, the pre-action valve opens, allowing the pressurized air or nitrogen to escape and allowing water to enter the pipes. The alarm valve is used to monitor the water flow in the system and to activate an alarm if water is detected. The alarm can be audible or visible, and it is designed to alert building occupants to the presence of a fire and to summon emergency responders.

Pre-action sprinkler system alarm valves are commonly used in areas where water damage is a concern, such as data centers, museums, and art galleries. They are also used in areas where traditional wet pipe systems may be prone to freezing, such as in unheated buildings or in cold climates. Regular maintenance and inspection of pre-action sprinkler system alarm valves is essential to ensure their proper function and to prevent leaks or other failures that could compromise the safety of the system.

1) Size: DN50 / DN65 / DN80 / DN100 / DN125 / DN150 / DN200 / DN250
2) Flange holes match to: PN16 / BS4504 / EN1092 / DIN2502 / ANSI150lb
3) Rated working pressure: 1.6MPa / 16bar / 235psi
4) Material: ductile cast iron body, rubber seal, galvanized accessory pipe, brass accessory valves
5) With all fittings include water motor bell, pressure switch, pressure gauge, solenoid valve etc.

Q: Are you trading company or manufacturer?

A: We are professional manufacturer specialized in orthopedic and sport products. And we trade our products with our clients directly.

Q: Can you do OEM and ODM?

A: Yes, OEM and ODM are both acceptable. The material, color, style can customize, the basic quantity we will advise after we discuss.

Q: Can we use our own logo?

A: Yes, we can print your private logo according to your request.