Vacuum Stainless Steel Blank Flange Blind Flange End Blank SS304 SS316L ISO-K Claw Clamp Blank Flange for Semiconductor

ISO Flange Assembly Instructions

ISO flanges are larger than KF flanges, similar to the KF flanges, they use a centering ring for sealing ISO flanges are widely used in systems that need frequent cleaning or disassembly.

There are two different methods to join the flanges together:1. Bolts (ISO-F, see diagram C) or 2. Claw clamps (ISO-K, see diagram A). These two flanges look very different, yet they can be joined together by using a single claw clamp(see diagram B).

A. ISO-K Flange with Double Claw Clamp
B. ISO-K Flange With Single Claw Clamp
C. ISO-F Flange
D. ISO-K Flange and Nonrotatable with Rotatable Bolt Ring

Applications

KF flanges are a sexless design made from 304 stainless, they can be used in a wide range of applications including

• 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.

Material and Size

•  Flanges,Blanks,Fittings:Stainless Steel 304,316L or Aluminum
•  Clamps:Aluminum or Stainless Steel 304
•  O-Ring:FKM/NBR/EPDM
•  Size:KF10-KF50(See Figure 1

Vacuum range

Elastomer seal: >= 1 x 10-8 Torr

Temperature range

Viton: -50°C to 200°C

ISO-K Claw Clamp Blank Flange

*Material: SS304/SS316L

	Model for 304	Size(ISO/NW)	A/mm	B/mm	C/mm	D/mm	N.W./g
	FBB821S634	63	95	12	90	70	640
	FBB821S804	80	110	12	105	83	860
	FBB821S1003	100	130	12	125	102	1205
	FBB821S1254	125	155	12	150	127	1725
	FBB821S1604	160	180	12	175	153	2300
	FBB821S2004	200	240	12	235	213	4150
	FBB821S2504	250	290	12	285	261
	FBB821S3204	320	370	17	365	318
	FBB821S4004	400	450	17	445	400	21000
	FBB821S5004	500	550	17	545	501	31500
	FBB821S6304	630	690	22	685	651