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Good sealing performance reduces environmental pollution, excellent flame retardant performance maintains tank pressure balance and safety device ZFQ-I series flame retardant breathing valve from Chin
Product Description
The explosion-proof flame retardant breathing valve produced by our company is made of stainless steel, high-quality aluminum alloy or cast iron, with light weight and good corrosion resistance. The sealing surface between the valve plate and valve seat is made of engineering plastic. When the valve is closed, the sealing performance is good, and the flame retardant layer is made of stainless steel with porous flame retardant measures, resulting in excellent flame retardant performance. According to the Chinese "Fire Protection Design Code for Petrochemical Industry" (GB50160-92), "Fixed top tanks for Class A and Class B liquids should be equipped with flame arresters and breathing valves. Breathing valve is a safety device that ensures normal breathing of storage tanks. It not only maintains the pressure balance of the storage tank to prevent damage in case of overpressure or vacuum, but also minimizes the discharge of medium inside the tank and reduces environmental pollution to the greatest extent possible.
Specification parameters
Nominal diameter | DN50~DN250 |
Nominal pressure | PN1.0~PN1.6 Class150 |
Working temperature range | -40℃~425℃ |
Connection method | Flange style |
Body material | CF8 CF8M CF3M |
Operating Pressure | A:+355pa(+36mmH2O) -295pa(-30mmH2O) B:+980pa(+100mmH2O) -295pa(-30mmH2O) C:+1750pa(+180mmH2O) -295pa(-30mmH2O) D:Customized according to customer specified pressure |
Traffic characteristics | Quick open |
Leakage level | Soft seal grade VI (standard ANSIB16.104) |