Applications

ISO-KF fittings can be used in a wide variety of applications including:
• Roughing and foreline plumbing
• Small systems
• Systems requiring frequent cleaning or modification
• Research and teaching laboratories
ISO-KF components are primarily designed for use at subatmospheric pressure. Because of the large number of elastomer seals used.

Description

The ISO-KF system is a modular, building block method ofcreating a piping system. There are several advantages in the use of ISO components. Since component dimensions are standardized, elbows,tees, crosses or valves for a given size may be interchanged. The flanges are ''sexless'' and the seal is symmetrical, so that the components are rotatable. By using ISO components, system assembly is quick and cost effective. See Figure 1 for the ISO dimensions of flange sizes 10, 16, 25, 40 and 50. These dimensions apply to ISO-KF flanges of these nominal diameters throughout this catalog.

Installation

The ISO-KF components are assembled by inserting a centering ring between the two flange faces, then securing the assembly with a flange encompassing clamp (see Figure 2).

Vacuum range

Elastomer seal: >= 1 x 10-8 Torr

Temperature range

Viton: -50°C to 200°C

KF Center Ring

* Material: SS304/SS316L/Aluminum

Model for 304	Size	A/mm	B/mm	N.W./g
FLG81N1K104	KF10	12	10
FLG81N1K164	KF16	17	16	3.7
FLG81N1K254	KF25	26	25	6.4
FLG81N1K404	KF40	41	40	9.4
FLG81N1K504	KF50	52	50	20

ISO Center Ring

* Material: SS304/SS316L/Aluminum

Model for 304	Size(ISO/NW)	A/mm	B/mm	C/mm	D/mm	N.W./g
FLG81N1S634	ISO63	68	70	3.9	8	45.6
FLG81N1S804	ISO80	81	83	3.9	8	52.6
FLG81N1S1004	ISO100	100	102	3.9	8	68.1
FLG81N1S1604	ISO160	148	153	3.9	8	80.4
FLG81N1S2004	ISO200	210	213	3.9	8	106.4
FLG81N1S2504	ISO250	257.5	260.4	3.9	8	143.5
FLG81N1S3204	ISO320	312	317.3	5.6	12
FLG81N1S4004	ISO400	394	400	5.6	12
FLG81N1S5004	ISO500	494	501	5.6	12