Tianjin U-ideal Multi -Functional Combination Air Valve 
1.D-070 Multi -Functional Combination Air Valve discription:
The D-070 Multi -Functional Combination Air Valve is a unique valve, operating without a float and utilizing the rolling diaphragm principle. This unique structure allows the dynamic air valve to discharge air from the water system in a controlled and gradual manner, thus preventing slam and local up-surges. When vacuum (down-surge) occurs, the valve reacts quickly to admit large volumes of air into the water system, thus impeding down-surges and, consequently, all pressure surges in the line. The air & vacuum component of the dynamic air valve is normally closed when the line is not operating, thus preventing the infiltration of debris and insects into the water system.

Product Features
A unique valve, operating without a float and utilizing the rolling diaphragm principle.
Valve discharges air from the water system in a controlled and gradual manner, thus preventing slam and local up-surges.
Normally closed air & vacuum orifice prevents the intrusion of debris and contaminants into the system.
Smooth and gradual closing unaffected by water flow.
Applications for Tianjin U-ideal float type air vents :
include hydronic heating systems, water service lines, water storage tanks, centrifugal pumps, gas lines, solvent filters and similar equipment. Operation is completely automatic, and the simple design and quality mechanism make operation trouble-free and maintenance infrequent.
2.The AV3F-AS Water combination air valve. Ensure the proper operation of the pipeline networks allowing the release of the air pockets during working conditions, the evacuation and the entrance of large volumes of air in case of filling and draining operations.
Why remove air from a water system?
Every building services engineer knows that air trapped in either a hot or chilled water system can cause
trouble, such as excessive noise, corrosion and increased maintenance costs. Air can cause air locks which inhibit the filling of the system or the priming of pumps. It can seriously affect the accuracy of flow measurement meters and regulating valves. Under extreme conditions it may even temporarily decommission plant.
Air and other incondensable gases considerably reduce heat transfer efficiency. A film of air 1 mm thick
presents the same barrier to heat transfer as a wall of copper 13 m thick!
Entrapped air in any water system is a threat to thermal efficiency. It is particularly damaging in a chilled water system which does not have the natural deaerating ability of hot water.
 

Origin	Tianjin China
Brand	Tianjin U-ideal Instrument
Connection	Flange or thread
Export Markets	Global
Packing	Wooden Case or Carton

About us	Our company is specialized in the manufacture of valves, ,flow meters,level gauges,etc
Why Choose us
Rich experience	We have been engaged in machining for many years. Our company had good reputation with customers from American, Europe, North America, and Australia, India etc. We also have a good team for sale and quality control.
Good service	We will respond to you within 24 hours. We manufacture non-standard parts according to your drawings. And we will continue to serve you after sales and will be responsible for the mistakes from us.
Low price	The prices of our production are reasonable! The prices will be much better if your quantity is good.
Perfect quality	We have strict quality control from producing to delivery. Our company had strong technology support, 80% of our colleagues are master or bachelor's degree. We have cultivated a group of managers who are familiar with product quality, good at modern concept of management.
Contact
If you have any question or requirements, please don't hesitate to contact us.