Ductile Iron Flange Type DN250 10′′ Diaphragm Deluge Alarm Valve Zsfm250 for Fire Sprinkler System

• Customization: Available
• Sprinkler Installation: Ordinary
• Sprinkler Head Type: Open
• Model NO.: ZSFM250
• Alarm Valve Type: Deluge Valve
• Automatically Opened and Closed Repeatedly: Can Automatically Opened and Closed
• Open Fire Sprinkler System Type: Deluge System
• Closed Fire Sprinkler System: Wet Fire Sprinkler System
• Wet Alarm Valve Structure: Diaphragm
• Alarm Valve Diameter: DN250
• Certificate: CCC
• Transport Package: Wooden Case/Carton Box
• Specification: DN250 10′′
• Trademark: Longdu/OEM
• Origin: Cn
• HS Code: 8481804090
• Production Capacity: 500000PCS/Year

Product Description

Introduction of Deluge Alarm Valve

ZSFM diaphragm style deluge alarm valve consists of main deluge valve, water motor alarm bell, pressure switch, manual release valve, solenoid valve, manual reset device and controling pipework, assebled with opening sprinklers/water curtain sprinklers and fire alarm controling system to form the fire extinguishing system, applying to easily frozen area or buildings requiring special protection from fire.

 

Deluge type fire sprinkler systems need a smoke or heat detector like the pre-action system. A deluge system has open nozzles that can be used when a hazard is present. When flammable liquids are spread across a floor, deluge fire sprinklers aregood to have. In that case, buildings such as industrial parks and buildings with many tanks have deluge fire sprinkler systems installed.

 

How does it work?

1. The deluge valve is a diaphragm style valve that depends on water pressure in the diaphragm chamber to hold the diaphragm closd against the water supply pressure.

2. When the valve is set for service, the diaphragm chamber is pressurized through the trim connections from the inlet side of the system.

3. Open an actuation device, for example, the solenoid valve(or manual), release water from the diaphragm chamber faster than it can be replenished.

4. This results in a rapid pressure drop in the diaphragm chamber, and the force differential applied through the diaphragm to hold it in the set position is reduced below the valve trip point.

5. The water supply pressure then forces the diaphragm open, permitting water to flow into the system pipework to put out fire.

Technical Parameters

Flange type & specs.

Our Advantages

1. Manufacturer direct supply with reasonable price.

2. Fully assembled in factory and convenient for customers to install.

3. Strict quality check before export.

4. Customized OEM order is accepted.

5. Technical support available.
6. Wide product range of foam system and water sprinkler system.

FAQ

1. Are you a manufacturer or a trading company?
- Manufacturer, 100%, located in Nan'an City, Quanzhou, Fujian Province, China.

2. Can we pay a visit to your factory?
- Sure, we warmly welcome all customers to inspect our factory.

3. What products do you manufacture?
- Wide product range of fire fighting foam system and fire sprinkler system, such as foam bladder tanks,  foam concentrates, fire hoses, sprinkler heads, hydrants, gate valves, alarm valves and so on. 

4. What is your sample policy?
- For small items, we offer FREE SAMPLES for sample evaluation purpose, but customers need to pay for the shipping; For large and heavy items, we charge for the samples, but the charge will be refunded to customer when the order quantity reaches certain amount. 

5. What is your payment method?
- T/T, L/C, Paypal, Western Union etc. 

6. What is your delivery time?
- We have READY STOCK of some products(such as sprinkler heads, hoses, hydrants etc.), which allows for quick delivery within a week,  for other items or OEM orders, the delivery time is normally within one month. The quicker the payment from you, the sooner the delivery time will be:)

7. Which is your loading port from China?
- Xiamen port by sea or by air, and this year we are going to launch a NEW PLANT in Shandong province, so some products may ship from Rizhao or Qingdao port.