Conflat CF 4.5 inch Gate Valve, 2.5 inch 63mm Manual Gate Valve, Viton Gate / Copper Bonnet Seals, Stainless Steel
In the simplest of terms, HVA Conflat CF 4.5 inch vacuum gate valves are devices that regulate the flow of gases,
fluids or materials through a structure or
aperture by opening, closing or obstructing a
port or passageway. Gate valve assemblies
consist of three key components: an actuator, a
carriage/gate and a valve body. The actuator
provides the power to position or transport the
valve's carriage/gate. The actuator is attached
to the valve's body via a rectangular bonnet
flange. The gate closes or opens one of the
valves body ports. The valve body is a vacuum
tight chamber that is screwed, flanged or
welded into a larger vacuum vessel or system.
The 11000 Series Gate Valves feature a positive lock-over center
mechanism. Linear actuation allows the use of a welded bellows to seal the actuator
(i.e. no rotary seals). Shock and vibration are reduced to a minimum
by a unique air cylinder design. This feature is extremely beneficial
for semiconductor fabrication and other sensitive processing
requiring operation which is relatively free of vibration.
The HVA stainless steel body offers one of the smallest interior surface areas in the vacuum valve industry. The body and all major
internal components are vacuum furnace brazed at 1100C, at
1x10-6 Torr, ensuring maximum joint integrity. This eliminates the
possibility of virtual leaks or entrapment areas and minimizes body
distortion found in conventionally welded valves. For maintenance
purposes, the carriage assembly can be removed from the body
without removing the valve from the system. This is a 1100 Series Standard Cycle Manual Gate Valve UHV (Ultra High Vacuum) with a Conflat CF 4.5 inch Port Flange and a 2.5 inch ID opening.
For Spcecifications see graphic below. The installation and operating instructions manual can be downloaded in pdf format below.