UHV Gate Valve
1.Actuator :Electro-Pneumatic or Manual
2.Material:304S.S.
3.Size :2" to 8"
4.ISO9001:2008 Approval
5.custom special size

Theory of Operation:

UHV Series valves are toggle action, linear travel gate valves. The gate carriage moves in the valve body on a set of wheels, moved back and forth by a manual or pneumatically actuated valve stem which passes through a metal bellows.

To close the valve, the carriage moves forward on wheels until it reaches the end of the valve case.

When the carriage stops, the toggle linkage continues to travel and extend. The gate does not move forward, only upward toward the port seal surface. There is no abrasion or damage to the O-ring. The gate moves up to the port into its sealing position. The O-ring is compressed, making a leak-tight seal. The toggle linkage continues to move forward until the toggle knee passes center and locks, providing positive closure protection in the event control power, or air pressure, is lost.

Specifications:

Material-Body :304 S.S.

Carriage :304 S.S.

Gate :304 S.S.

Bellows AM350

Life Cycle :size under 4" (included)  100,000 cycles

                    size above 4"             50,000 cycles

Hellium leak rates at 1 atm differential:< 5 x 10-10 std cc/sec for Viton® bonnet seal

Bakeable Temperature :Open 150°C Viton® bonnet seal

                                     Closed 200°C Viton® bonnet seal

Maximun P :20 Torr before opening

Standard Seal :Gate:Viton® O'ring

              Bonnet:OFHC gasket

Size :2" to 8"

Actuator :Electro-Pneumatic or Manual

Surface Treatment :Scotch Polished

Options:a. Position indicator

               b. Pneumatic control solenoid valve

               c. Roughing port

               d. Other material Gate O'ring seal

Applications:

Here are some general options that are available with most of our valve products. These options

are in addition to whatever features you choose for your valve. (See the Gate Valve Ordering Information for more information on these features.)

1.Flange Options:  Port flanges are available in a variety of configurations and geometries. Themore common flange types are listed here. Others are routinely supplied, please call the factory for information.

2.Solenoid Control Valves: Htc vacuum valves with pneumatic actuators are supplied with a 110 VAC, 60 Hz solenoid control valve. Other solenoids are available, refer to Ordering Information for a partial list. There is an additional charge for most special solenoid valves. Please consult the factory for current price information.

3.Fittings Option: Fittings, such as VCR® or PT fittings, may be installed on valves. The fittings are used to add items, i.e.: gas lines, T.C. tubes, leak valves or up-to-air valves, to a system via the valve. Consult the factory for prices and configurations.

4.Roughing Ports: Are available for valves, the most commonly supplied are:

Valves with ConFlat port flanges are usually supplied with a ConFlat flange roughing port(s). Valves with ISO port flanges are usually supplied with an ISO flange roughing port(s). You may choose and specify otherwise.

Roughing ports with flanges other than those listed above, i.e.: ANSI, VCR® fittings or tubes without flanges, are also available, please consult the factory for prices.

When ordering roughing ports, please consider:

1.the roughing port I.D., and 

2.the roughing port flange O.D.

Htc vacuum gate valves: