FLANGE MULTIPLEXERS
Multi-CF TM FITTINGa CF PORTS
UHV VACUUM ADAPTOR WITH 2¾ CF AND 1a
ROTATABLE 2¾ CF BOLT RING ACCEPTS ARBITRARY LENGTH BOLTS
APPLICATIONS:ELECTRON GUN / ION SOURCE MOUNTING
DETECTOR SUBSYSTEMSHIGH-COMPLEXITY UHV SUBSYSTEMSUHV VACUUM MANIPULATOR SYSTEMSFEEDTHROUGH CLUSTERS

MCF275-FM1R05
FEATURES / OPTIONS:MOUNT FIVE 1a CF ITEMS ON SINGLE 2¾ CF PORTROTATABLE TAPPED HOLE / CLEAR HOLE 2¾ CF BOLT RING
EASY INTERIOR ACCESSGRABBER GROOVES ON 2¾ CF SEALING SURFACECAPACITY FOR ARBITRARY-LENGTH 1/4-28 BOLTS
UNITARY STAINLESS 316 CONSTRUCTION WITH ONE WELD
THE MCF275-FM1R05-A FLANGE MULTIPLEXERThe original multiplexer design (unpatented) was developed at Kimball Physics
Flange Multiplexer MCF275-FM1R05
in 1983. Since that time, several companies have taken up the design. The
MCF275-FM1R05 Flange Multiplexer is a redesign which incorporates several new features: a rigid unitary construction where only one weld (ofprevious eight) remains; the capability to use arbitrary length bolts; the inclusion of high strength Grabber-Groove technology; improved portalignment accuracy; and better UHV cleanliness. Two sets of bolt holes, one tapped and one clear, allow the user to choose the mode ofattachment. The bolt ring is confined such that it cannot slide axially back from the sealing surface; thus the sealing surface is not exposed todamage (as is the case with ordinary rotatable flanges).
MCF275-FM1R05
Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
1a CF SEALING SURFACES
2¾ CF SEALING SURFACELENGTH, GASKET PLANE TO
GASKET PLANEFlange Multiplexer
Multi-Port Flange
Unitary Stainless Steel 316 with one weld
One on axis with (12) 8-32 tapped boltholes and four off axis with (6) 8-32 tappedbolt holes per sealing surface
One rotatable flange with (6) 1/4-28 tappedbolt holes and (6) 1/4-28 clear bolt holes
with Grabber Grooves
2.800 inch

ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)CAUTIONS:(1) SILVER PLATED BOLTS OR
EQUIVALENT LUBRICATIONMUST BE USED
(2) USE CORRECT BOLT LENGTHToll Free: 1 888 KIM-PHYS (1 888 546-7497) e-mail: info@kimphys.com
Tel. 1 603 878-1616 Fax: 1 603 878-3700

23

FLANGE MULTIPLEXERMCF275-FM2R04
FEATURES / OPTIONS:COMPACT INSTRUMENT HOUSING FOR MOUNTING SUBSYSTEMSTWO AXIAL 2¾ CF PORTS (ONE ROTATABLE WITH TAPPEDAND CLEAR HOLES),EQUIPPED WITH THREE PAIRS OF 2¾ GRABBER GROOVESFOUR AUXILIARY 1a CF PORTS,
EQUIPPED WITH DOUBLE BOLT HOLE SETS
CAPACITY FOR ARBITRARY LENGTH 1/4-28 BOLTS,UNITARY STAINLESS 316 CONSTRUCTION WITH ONE WELD

MCF275-FM2R04
Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
1a CF SEALING SURFACES
2¾ CF SEALING SURFACESLENGTH OF PARTLENGTH, GASKET PLANE TO
GASKET PLANE

Flange Multiplexer
Instrument Housing,Multi-Port Flange
Unitary Stainless Steel 316 with one weld
Four off axis with (12) 8-32 tapped boltholes per sealing surface
One rotatable flange with (6) 1/4-28 tappedbolt holes and (6) 1/4-28 clear bolt holes
and two pairs of Grabber Grooves.
One non-rotatable flange on axis with(8) 1/4-28 tapped bolt holes
and one pair of Grabber Grooves.
2.430 inch
2.450 inch

24Flange Multiplexer MCF275-FM2R04
THE MCF275-FM2R04 FLANGE MULTIPLEXER /INSTRUMENT HOUSING
The MCF275-FM2R04 Flange Multiplexer is designed as a compact
Ultra-High-Vacuum instrument housing, though it may be used innumerous ways. It’s compressed axial form offers versatility and easy
access. The axes of the auxiliary 1a CF ports all pass through themain axis 1.575 inches (40.64 mm) from the flange gasket center
plane. A total of three pairs of 2¾ grabber grooves are available formounting interior apparatus.

Specifications Subject to Change Without Notice.

FLANGE MULTIPLEXERMCF275-FM4R04
FEATURES / OPTIONS:INSTRUMENT HOUSING WITH UNUSUAL VERSATILITY
EXCEPTIONAL INTERIOR VOLUME AND ACCESSTWO AXIAL 2¾ CF PORTS (ONE ROTATABLE),TWO SIDE 2¾ CF PORTS,
AND FOUR AUXILIARY 1a CF PORTS,
ALL 2¾ PORTS EQUIPPED WITH GRABBER GROOVESALL PORTS EQUIPPED WITH DOUBLE BOLT HOLE SETS
UNITARY STAINLESS 316 CONSTRUCTION WITH ONE WELD

MCF275-FM4R04
Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
1a CF SEALING SURFACES
2¾ CF SEALING SURFACESLENGTH OF PARTLENGTH, GASKET PLANE TO
GASKET PLANE

Flange Multiplexer
Instrument Housing,Multi-Port Flange
Unitary Stainless Steel 316 with one weld
Four off axis with (12) 8-32 tapped bolt
holes per sealing surface
One rotatable flange with (6) 1/4-28 tappedbolt holes and (6) 1/4-28 clear bolt holes.
One non-rotatable flange on axis with(12) 1/4-28 tapped bolt holes.
Two sealing surfaces, one on each side,
each with (12).1/4-28 bolt holes.
All 2¾ CF ports have Grabber Grooves.
4.180 inch4.200 inch

25Flange Multiplexer MCF275-FM4R04
THE MCF275-FM4R04-A FLANGE MULTIPLEXER /INSTRUMENT HOUSING
The MCF275-FM4R04 Flange Multiplexer is designed mainly as an
Ultra-High-Vacuum instrument housing, though it may be used innumerous ways. It has unusual versatility and access. The axes ofthe auxiliary 1a CF ports all pass through the main axis at the rotating
flange gasket center plane. Six sets of grabber grooves are available
for mounting interior apparatus. Additional versions of this part withadditional features are being designed.

Specifications Subject to Change Without Notice.

FLANGE MULTIPLEXERMCF275-FMAA204
FEATURES / OPTIONS:INSTRUMENT HOUSINGTWO AXIAL 2¾ CF PORTS AND FOUR AUXILIARY 1a CF PORTS
2¾ PORTS EQUIPPED WITH GRABBER GROOVES
1a PORTS EQUIPPED WITH DOUBLE BOLT HOLE SETS

THE MCF275-FMAA204 FLANGE MULTIPLEXER /INSTRUMENT HOUSING
The MCF275-FMAA204 Flange Multiplexer is designed mainly as anUltra-High-Vacuum instrument housing, though it may be used innumerous ways. It has unusual versatility and access. The axes ofthe auxiliary 1a CF ports all pass through the main axis at the main
2¾ CF flange gasket center plane. Two sets of grabber grooves areavailable for mounting interior apparatus.

Flange Multiplexer MCF275-FMAA204

MCF275-FMAA204
Multi-CF FITTINGCOMMON APPLICATIONCONSTRUCTION / MATERIAL
1a CF SEALING SURFACES
2¾ CF SEALING SURFACESLENGTH OF PARTLENGTH, GASKET PLANE TO
GASKET PLANE

Flange Multiplexer
Instrument Housing,Multi-Port Flange
Unitary Stainless Steel 316 with one weld
Four off axis with (12) 8-32 tapped bolt holes
per sealing surface
Two non-rotatable flanges on axis, each with(6) 1/4-28 tapped bolt holes.
Two sealing surfaces, one on each side, eachwith (12).1/4-28 bolt holes.
All 2¾ CF ports have Grabber Grooves.
4.180 inch
4.200 inch

ALL DIMENSIONS ARE IN INCHES(MILLIMETERS IN PARENTHESES)CAUTIONS:(1) SILVER PLATED BOLTS OR
EQUIVALENT LUBRICATIONMUST BE USED
(2) USE CORRECT BOLT LENGTH

26Specifications Subject to Change Without Notice.