These KF 90-degree elbow vacuum fittings follow KF standards and have flange sizes from KF16 to KF50. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50. They are made of corrosive-resistant stainless steel. \n

Part No.	Size	Material	A	B	C	R
EV01043	KF16	304 S.S.	40	19.05	30	28.6
EV01044	KF25	304 S.S.	50.8	25.4	40	38.1
EV01045	KF40	304 S.S.	65	38.1	55	57.2
EV01046	KF50	304 S.S.	80	50.8	75	76.2