A selection of vacuum flanges and fittings are available in all the standard type vacuum component systems, including NW (also known as KF or QF), ISO, ConFlat (CF, metal seal) and Weldable. Apex offers a complete line of accessories needed in rough, high vacuum and UHV systems including vacuum traps, electrical feedthroughs, vacuum valves and optical vacuum viewports. The standard material of construction is 304 SS, but 316L SS is available.
NW flange systems are quick connect systems with quick clamp and centering rings providing the connection. Sizes of 10mm to 50mm ID are available. NW fittings are good for all vacuum systems up to high vacuum. ISO flanges are similar to NW except they are larger in diameter, starting at 63mm and going to 500mm. ISO fittings are good choices for up to high vacuum. CF (or, metal seal) flange systems use a knife-edge seal with softer OFHC copper gaskets to form the leak tight vacuum seal that can be heated for bake-out to 450°C. CF flanges and fittings are great for UHV systems and/or systems that must be heated.
We are pleased to offer a full line of vacuum valves. Types of vacuum valving include gate valves (pneumatic or manual- piton or metal seal bonnet), poppet valves or ball valves. All fitting types are provided including weldable tube end flanges on the roughing valves.