Feature: 1. This valve features high temperature resistance, rust protection, reliably sealing. 2. Remove excess air during the operation of the exhaust system and hvac system 3. The exhaust mechanism is very reliable and is cast from high-precision components 4. It is convenient to demount and maintenance, while the water in the system will not flow out, so there is no need to empty the system. 5. The steam and water separation tray is designed with special structure to ensure that the water will not be discharged during exhaust. Specification: Features: This valvefeatures high temperature resistance, rust protection, reliably sealing. Remove excess air during the operation of the exhaust system and hvac system The exhaust mechanism is very reliable and is cast from high-precision components It is convenient to demountand maintenance, while the water in the system will not flow out, so there is no need to empty the system. The steam and water separation tray is designed with special