Angle seat piston valve

Angle seat piston valve

An angle seat piston valve is a pneumatically-controlled valve with a piston actuator providing linear actuation to lift a seal off its seat. The seat is set at an angle to provide the maximum possible flow when unseated. Angle seat piston valves are particularly suited to applications where high temperatures and large flowrates are required, such as steam or water. When used in reverse some models of angle seat piston valve will eliminate water hammer when operated.

Operation

Pneumatic valves are operated by a pilot medium under pressure, usually compressed air but also oil or water.

The valve is equipped with a pneumatic actuator supplied by a three-way solenoid valve. The pressure of the pilot medium enters the actuator cylinder and acts on the piston, which allows the seal to open or to close through the stem. The return of the seal into its rest position is usually achieved by a return spring that can be found in the pneumatic actuator.

In the double acting configuration there is no return spring and the pilot medium is used both for opening and for closing the valve.

A red indicator becomes visible through the sight dome that is found on the top of the actuator when the valve is in the open position.

The pressure range depends on the pressure of the pilot medium and the controlled medium and on the direction of the flow, but also on construction parameters of the valve, such as the diameter of the orifice, the diameter of the actuator cylinder and the spring force..

ee also

* Piston valve


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Piston valve — A piston valve is a device used to control the motion of a fluid along a tube or pipe by means of the linear motion of a piston within a chamber or cylinder.Examples of piston valves are: * The valves used in the valve gear of many stationary… …   Wikipedia

  • Valve — This article is about the flow control device. For the game developer, see Valve Corporation. For the electronic component, see Vacuum tube. For other uses, see Valve (disambiguation). These water valves are operated by handles. A valve is a… …   Wikipedia

  • Check valve — Tilting disc inconel check valve …   Wikipedia

  • Control valves — are valves used to control conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing in response to signals received from controllers that compare a setpoint to a process variable whose value is… …   Wikipedia

  • Cylinder head porting — refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve the quality and quantity of the air flow. Cylinder heads, as manufactured, are usually suboptimal due to design and manufacturing… …   Wikipedia

  • List of Volkswagen Group petrol engines — These petrol engines listed below are currently in use today, by various marques of automobiles, and commercial vehicles, of the Volkswagen Group (Volkswagen Aktiengesellschaft) (VWAG).Since the Volkswagen Group is European, the engine… …   Wikipedia

  • Chevrolet Vega — 1972 Chevrolet Vega GT Hatchback Coupe Manufacturer Chevrolet Division of General Motors Also called Vega 2300 …   Wikipedia

  • Ducati V-twin motorcycles — Ducati Multistrada 90 Degree V twin motor The next new Ducati engine to appear after the Ducati Apollo was the 90°V twin, initial Grand Prix racing versions being 500 cc, and the production bikes were 750 cc. There was also the Ducati 750 Imola… …   Wikipedia

  • gasoline engine — Most widely used form of internal combustion engine, found in most automobiles and many other vehicles. Gasoline engines vary significantly in size, weight per unit of power generated, and arrangement of components. The principal type is the… …   Universalium

  • Automobile — For the magazine, see Automobile Magazine. Car and Cars redirect here. For other uses, see Car (disambiguation). Automobile …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”