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· Function and Use: The valve is used to living quarters in the fire water and domestic water supply system in parallel, when fire water, automatic emergency shutdown valves, cut domestic water to ensure fire water. When the fire ended, the valve opens automatically resume living water, fire water than traditional single more cost savings. 

· Pressure Rating: PNl10, PN16, PN25 

· Diaphragm: DN20 ~ 450 

· Piston: DN500 ~ 750 

· Medium temperature: 0 ~ 80 ℃