Manual Gate Valves

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Specifications - Manual Gate Valves

Nominal IDs: 1-1/2 to 12 inch
Helium leak rate: <= 2×10-9
Body: 304 SS vacuum furnace brazed body
Bellows: Welded AM-350
O-ring: Viton standard
Other compounds available
Finish: Electropolished inside and out
Maximum pressure differential at opening
4 inch ID or smaller:
760 Torr on gate side, 20 Torr on carriage side
Greater than 4 inch ID:
20 Torr either direction
Closed: 760 Torr in either direction
Vacuum range:
Viton Seal Bonnet: >= 1 x 10-9 Torr
Copper Seal Bonnet: >= 1 x 10-10 Torr
Temperature range:
Viton Seal Bonnet: <= 150°C
Copper Seal Bonnet: <= 200°C with CF flanges and gate
in open position
Pneumatically actuated: Normall closed 120V, 50/60Hz air solenoid, standard, Maximum 80 psig operating air pressure, standard. (Higher operating pressures available upon request)

Reed-switch position indicator, standard

Manually actuated:
Acme threads for fewer turns
Thermal: Heater jackets and controllers available.  Call for information and pricing
Air solenoids
heater jackets