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Product Listing

Gate Valves
Circular Gate Valves - Specifications

 Body, Carriage & Gate 300 Series ss
 Bellows AM-350 ss
 Air Cylinder Teflon® coated Aluminium
 Bolts 300 Series ss
 Bonnet UHV / HV OFE Copper / Viton® elastomer
 Gate Viton® or optional Kalrez® 4079 elastomer
 Piston Viton® elastomer
Electropneumatic Actuator
 Air Pressure 70 to 100 psig
 Air Control Valve 410 Series Humphrey solenoid valve
 Solenoid Power 120 VAC, 50/60Hz, 4W
 Power Loss Valve closes
 Position Indicators Mechanical, vernier adjustable, hinged-roller type micro swithes suitable for 5A, 120/240 VAC
 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 combinations.     
Series Open Closed Bonnet Gate 
UHV 200°C 150°C Copper Viton®
UHV 250°C 200°C Copper Kalrez® 
HV 150°C 150°C Viton® Viton®

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

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.

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
 5/8 inch Ports
 1-1/2 inch Ports
 2 inch Ports
 2-1/2 inch Ports
 3 inch Ports
 4 inch Ports
 5 inch Ports
 6 inch Ports
 8 inch Ports
 10 inch Ports
 12 inch Ports

 Related Topics
 Gate Valve Options Guide
 Rectangular Gate Valve Specifications and Products
 Gate Valve Introduction