Dual Body Combination Air Valve; Air Release Valve for Waste Water

Tianjin U-ideal Dual Body Combination Air Valve;Air release valve;Air vent
1.The AV957 Dual Body Combination Air Valve for wastewater is a two-valve assembly consisting of a wastewater air & vacuum valve and a wastewater air release valve. The combination allows the valve to exhaust large amounts of air at start-up, to release small pockets of air while the system is running, and to prevent critical vacuum conditions during draining. For additional configurations, see Product versions below.

Product features and benefits
Rugged and corrosion resistant
Drop tight seating
Stainless steel float
Increases system efficiency
Reduces operating costs
Optional backflushing attachments
Applications for Tianjin U-ideal floattype 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 AV960 and AV983 air valve is a two-valve assembly consisting of an air & vacuum valve and an air release valve. The combination allows the valve to exhaust large amounts of air at start-up, to release small pockets of air while the system is running, and to prevent critical vacuum conditions during draining. The Kinetic feature prevents the valve from blowing shut before all the air is vented. For additional configurations, see Product versions below.

 
Product features and benefits
Features the standard valve mounted on a surge check valve
Minimizes slam, system shock, and valve damage
For pipelines where fluid velocity can exceed 10ft/sec, where column separation can occur, or at the discharge of large vertical turbine pumps

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.

Air vent valves are used to allow the pressure in the tank to balance while preventing the spillage of the fluid through the vent lines. These valves allow the free flow of fluid or air in or out of a chamber or tank until they close, usually activated by a float.
During refueling, incoming fuel dis-places the air in the tank. The vent valve allows this air to escape through a designated vent path
When the tank is full, the float valve closes preventing the fuel from escaping. These valves also allow air to renter the tank as fuel is consumed, preventing dangerous negative pressure and potential fuel starvation. Vent valves protect the fuel tank from pressure damage resulting from expansion and contraction of the fuel due to changes in temperature. In some applications they incorporate measures to prevent the fuel from exiting the tank when the aircraft is inverted either during flight or in an emergency.
 

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. Tel: 86-22 88971536 Fax: 86-22 88971536