These KF Tee fittings follow KF standards. 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 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive-resistant stainless steel. \n 

Part No.	Size	Material	A	B	C	D
EV01047	KF16	304 S.S.	40	19.05	30	80
EV01048	KF25	304 S.S.	50	25.4	40	100
EV01049	KF40	304 S.S.	65	38.1	55	130
EV01050	KF50	304 S.S.	70	50.8	75	140