Edwards Special Valves for Vacuum Systems
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Manufacturer: Edwards
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Product features
- Application-matched vacuum technology → supports stable process pressure and reliable operation
- Multiple configurations → enables selection around gas load, vacuum level and installation constraints
- Edwards system integration options → simplify specification of complete vacuum solutions
- Serviceable construction → supports planned maintenance and lifecycle control
- Genuine spare-parts support → helps reduce unplanned downtime risk
- Industrial-duty construction → supports repeatable operation under sustained loads
- Verified technical documentation → enables model selection against actual process requirements
- AxFlow product-selection support → helps align pump, controls and accessories with the application
- Maintenance and service support → helps protect process continuity over the equipment lifecycle
- Application-specific configuration → helps avoid oversizing, undersizing and unnecessary operating cost
AV5A air admittance valves with couplings
The AV5A is manufactured in aluminium alloy. It has a control knob attached to a screw‑actuated plunger: turn the control knob clockwise to close the valve. A nitrile O-ring seals the plunger to the valve body. The valve can be connected directly, pipeline supported or panel mounted, and is connected to the vacuum system with the Edwards SC5 coupling (supplied).
AV10K air admittance valves
The AV10K is manufactured and works in the same way as the AV5A, but it is connected differently. This valve can be pipeline supported only and is connected to the vacuum system with an NW10 fitting.
BRV backing/roughing valve
BRV backing/roughing valves with ISO NW roughing and fore pump terminations feature manual or pneumatic actuation. They combine the function of separate backing/roughing valves in one integral 3 port unit. A flexible neoprene connector is supplied for the backing connection. The roughing and fore pump ports terminate in the appropriate NW termination.
IPV10EK air admit valve NW10
The IPVA10EK is a solenoid operated valve designed for automatic admittance of air or vent gas into a vacuum system. The valve has two ports with NW flanges. One of the valve ports is connected to the vacuum system, the other port can be left open to atmosphere or connected to a vent gas supply. The vacuum system is isolated from atmosphere (or the vent gas supply) by a fluoroelastomer pad on the base of the valve plunger, which seals against the body of the valve.
QSB quarter swing butterfly valve
The QSB quarter swing valves are compact, quick acting, high conductance isolation valves. The QSB valves have a polished, stainless steel, ISO flanged body with fluoroelastomer O-ring sealed valve plate and shaft. The valve plate O-ring groove is vented to help maintain a stable high vacuum. The valve shaft O-rings and bearings are lubricated with Fomblin® grease to prevent gas bursts from behind the shaft seals.
VIV vacuum isolation valve
The VIV vacuum isolation valve is a high conductance, fast acting high vacuum isolation valve that is designed to prevent the movement of vapour or particulates from the backing pump to the process chamber. When the VIV is closed, the backing pump is safely vented. The VIV protects the process chamber from being vented when the pump stops or is stopped. When the backing pump is restarted, the valve will slowly open when the pressure within the VIV has dropped, minimising the effects of any pressure burst. VIV vacuum isolation valve is intended for use with Edwards small dry primary pump range nXDS, XDS, nXLi and nXRi.
