Ductile Iron Flange Type Preaction Alarm Valve for Fire Protection

• Application: Automatically Actuate Electric and/or Hydraulic Al
• Medium: Water
• Material: Ductile Iron/Cast Iron/Stainless Steel
• Connection: Flange
• Transport Package: Export Standard Package
• Specification: DN100-DN200
• Model NO.: ZSFY
• Trademark: huhang
• Origin: China
• Production Capacity: 50000PCS/Month

Product Description

Product Description

       The pre-action alarm valve is suitable for cold regions, hot regions, and critical locations where accidental water discharge is not allowed. These places include hotels, shopping malls, server rooms, libraries, museums, etc.

       In the absence of fire, the side pipe network is filled with compressed air. When a fire occurs, smoke detectors and heat detectors activate. At this point, the valve disk is in a standby state. After the sprinkler head operates, the pressure of the compressed air in the pipe network decreases. This creates a situation where the thrust of the lower chamber of the valve disk is greater than the pressure of the upper chamber, causing the valve disk to automatically open under the force of water. The fire pipe network quickly fills with fire water for firefighting through the sprinkler head.

Product Parameters

 

Quality and inspection:
       Regular check on production line at each working procedure, and one special inspector inspecting the goods in random during the period time of production.regular performance check on finished goods.        
Production step:
       1.The raw materials are cast or forged and processed into semi-finished products.
       2.Processing the semi-products in works shop
       3.Assembling the goods
       4.Testing the sealing in pressure and checking quality of the goods
       5.Package
       6.Delivery the goods on time
Package:
        1.The pakage standard:inside PVC bag and small box and standard export carton
        2.If you have any special requirements pakage,we can pakage as per your artworks.
Primary Competitive Advantages:
       1) We have several years of experience in manufacturing various types of valves professionally.
       2) Products are of good quality, with reasonable prices.
       3) Our style:Promise must be kept and action must be prompt and fruitful.

Certifications

       Our business idea:All for customers and everything from innovation.The size standards can be customized according to your specific requirements. Please feel free to contact us for more details.