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Gate Valves
Rectangular Gate Valves - Specifications
 Specifications
Material
 Body, Carriage & Gate 300 Series ss
 Bellows AM-350 ss
 Air Cylinder TeflonŽ coated Aluminium
 Bolts 300 Series ss, silver plated
Gaskets
 Bonnet  VitonŽ elastomer
 Gate VitonŽ elastomer
 Piston VitonŽ elastomer
Electropneumatic Actuator
 Air Pressure 70 to 100 psig
 Air Control Valve Herion, double impulse solenoid valve
 Solenoid Power 24 VDC 
 Power Loss Valve remains in position during air or power failure
 Position Indicators Mechanical, vernier adjustable, hinged-roller type micro swithes suitable for 5A, 120/240 VAC
Vacuum
 Range 1x10-11 Torr
 Leak Test 2x10-10 cc/sec of He
Temperature Range
Bakeability under vacuum in Open-Closed positions, with the following Bonnet-Gate seal combination.     
Series Open Closed Bonnet Gate 
HV 150°C 150°C VitonŽ VitonŽ

Sealing
Valves will seal against 15 psi differential atmospheric pressure in either direction.

Orientation
Valves can be installed in either a vertical or horizontal orientation.

Leak Tightness
Each valve is tested using a helium mass spectrometer leak detector calibrated for a minimum sensitivity of 2x10-10 Std. Atm. cc/sec of He. Internal welds are inspected for pits, cracks, and other irregularities which may cause virtual leaks.

Maintenance
Carriage and gate mechanism may be removed through the bonnet flange for seal replacement, cleaning or retrofitting without removing the valve body from the system.

Manual Actuation
Actuators are constructed with non-rising Acme threads for smooth and quick operation. Visual open position indicators are standard on all manual valves. 
For product listing, features and specifications click on links below
 SEMI / MESC Rectangular - Introduction
 SEMI / MESC High Vacuum Series
 C-Loc Rectangular-Introduction
 C-Loc High Vacuum Series
 Related Topics
 Gate Valve Options Guide
 Circular Gate Valve Specifications and Products
 Gate Valve Introduction