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Manual Al Diaphragm Valves (Buna-N)

Offer high tolerance for dirty systems at a relatively low cost.

  • Maximum leak rate of <1 x 10-6 mbar ls-1
  • Works best in the pressure range 10,000 - 1 x 10-5 mbar
  • Withstands bakeouts to 60° C
  • Buna-N and Fluorocarbon diaphragm versions are available

Techniques, such as Finite Element Analysis, are used to optimize the design of these valves, while testing each valve with a helium mass spectrometer ensures it meets stringent specification standards.

NOTE: The KF40 versions are available for pipeline mounting only and the smaller sizes can be panel mounted using the tapped holes provided.


Dimensional Drawings


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Ordering Table

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Flange Selection Guide
With a variety of flanges to choose from, the Flange Selection Guide is designed to help you find one to meet your vacuum requirements. Shop Now!
Can't find the flange you need or want a custom configuration? Please call us at +1 412 387 9200 or email international@lesker.com with your inquiry.

Accessories Table

Type Description
VacuCADSM
Part Number Price In Stock Add Item
Type Description
VacuCADSM
Part Number Price In Stock Add Item
Clamp
CLAMP,ALUMINUM,QF16,CAST 1/2" & 3/4"
(please log in)
QF16-075-C
P.O.R.
In Stock
Buna-N Centering Ring
CENTERING RING,ALUM,QF16,BUNA.
(please log in)
QF16-075-ARB
$3.25
In Stock
Clamp
CLAMP,ALUMINUM,QF25,CAST 1"
(please log in)
QF25-100-C
P.O.R.
In Stock
Buna-N Centering Ring
CENTERING RING,ALUM,QF25,BUNA
(please log in)
QF25-100-ARB
$4.35
In Stock
Clamp
CLAMP,ALUMINUM,QF40,CAST 1-1/2"
(please log in)
QF40-150-C
P.O.R.
In Stock
Buna-N Centering Ring
CENTERING RING,ALUM,QF40,BUNA
(please log in)
QF40-150-ARB
$6.45
In Stock
Buna-N Centering Ring
CENTERING RING,ALUM,QF10,BUNA
(please log in)
QF10-050-ARB
$3.85
Contact KJLC for Availability
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Contact Us - Manual Al Diaphragm Valves (Buna-N)