Kf Vacuum Flange Sizes

Although these sizes are used in north america the true nominal bore is often that of standard inch dimensioned tubes.

Kf vacuum flange sizes. Kf flanges are made with a chamfered back surface that are attached with a circular clamp and an elastomeric o ring as568 specification that is mounted in a metal centering ring. Kf qf crosses designs available for standard 4 way 5 way and 6 way crosses as well as 4 way reducer versions for adapting two different flange sizes. They are often called quick flange fittings because they are quick to assemble. Series 31 iso kf vacuum fittings provide several advantages.

All of proscitech s nw kf style vacuum connections conform to the international iso 2861 i standard kf series quick release flanges also comply with standard gb4982 85. Below are the sizes for the diameters of the various nw qf kf and iso vacuum fittings. They are commonly used to build foreline vacuum plumbing and process systems. Kf qf o rings centering rings a full range of stainless steel aluminum and brass centering rings along with buna n fluorocarbon and silicone o rings for kf qf flanges and components.

Iso kf flanges are sexless with a chamfered back surface and can be assembled quickly by using a metal centering ring with an o ring seal and a circular external clamp. We have included a file you may download that shows to scale the various sizes. Kf16 kf25 and kf40 flange sizes stainless steel kf flange blank caps can be used to protect a vacuum assembly that is not attached to a vacuum system to block a port during leak testing or to cap off a port that is not being used on a vacuum chamber body. Kf flanges are a sexless design made from 304 stainless the seal is a rubber elastomeric o ring mounted in a centering ring which aligns the flanges and holds the o ring in position.

These kf 40 hinge clamp vacuum fittings follow iso kf standards and have a flange size of nw 40. Each cap is shipped with a protective plastic cover. This chart also lists the physical measured diameters of the flange so you can use it to review what you have there using a ruler or calipers. Standard sizes are indicated by the nominal inner diameter in millimeters for flanges 10 through 50 mm in diameter.

In mm tube that can be welded to it. Iso kf vacuum flanges are also know as klein flanges. The flange is sized by the largest nominal i d. Kf10 kf16 kf25 kf40 and kf50.

Other vacuum components which may include three way types blind plates metal flexible corrugated pipes callipers and bolts heel blocks and holders comply with the iso standard 9000 2000.