These KF-type socket weld flanges follow KF standards and have different flange sizes from KF-10 to KF-50. They are commonly used to build fore-line vacuum plumbing and process systems. Because they are simple to put together, they are frequently referred to as quick flange fittings. A circumferential clamp and centring ring creates the vacuum seal between the connecting flanges. An O-ring made of rubber elastomer is part of the centring ring. Quick flange fittings come in the following standard sizes: KF-10, KF-16, KF-25, KF-40, and KF-50. They are made up of corrosion-resistant stainless steel.

Socket Weld Flange

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Part No.	Size	Material	A	B	C	D
EV01011	KF10	304 S.S.	30	12.2	16.5	13
EV01012	KF16	304 S.S.	30	17.2	20.5	19.3
EV01013	KF25	304 S.S.	40	26.2	29	25.7
EV01014	KF40	304 S.S.	55	41.2	44.7	38.4
EV01015	KF50	304 S.S.	75	52.2	57.4	51