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Manual Brass Ball Valves

Intended for high- and course-vacuum service.

  • Leak rate is less than 1x10-9 std. cc/sec. He.
  • Feature PTFE seats and fluorocarbon seals, both easily replaceable without demounting
  • When open, valves have an unrestricted bore, giving high gas conductance and making them useful in low-cost sample entry locks
  • When closed, main bore is pumped through a side vent hole
  • Available with terminations in female NPT, KF flanges, as well as weldable or braze sockets which are able to accept tubes from 1/4" to 2-1/8" diameter

NOTE: Ball valves can be very "stiff" upon initial operation, this is normal.

NOTE: Pneumatic actuation is available upon request. Please contact us by clicking here or +1 412 387 9200 for pricing and availability.


Dimensional Drawings


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To contact someone directly, please click here, or call +1 412 387 9200 to get in contact with your dedicated sales team.
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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.

 Notes:  Parts are in limited stock do to being discontinued. Shopping cart will notify you if you are over the limit available. Any issues please contact us by clicking here or +1 412 387 9200.

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
Fluorocarbon Centering Ring
CENTERING RING,SS,QF16,FKM O-RING,3/4"
(please log in)
QF16-075-SRV
$6.75
Contact KJLC for Availability
Clamp
CLAMP,ALUMINUM,QF25,CAST 1"
(please log in)
QF25-100-C
P.O.R.
In Stock
Fluorocarbon Centering Ring
CENTERING RING,SS,QF25,FKM
(please log in)
QF25-100-SRV
$8.55
In Stock
Clamp
CLAMP,ALUMINUM,QF40,CAST 1-1/2"
(please log in)
QF40-150-C
P.O.R.
In Stock
Fluorocarbon Centering Ring
CENTERING RING,SS,QF40,FKM
(please log in)
QF40-150-SRV
$13.10
Contact KJLC for Availability
Clamp
CLAMP,ALUMINUM,QF50,CAST 2"
(please log in)
QF50-200-C
P.O.R.
In Stock
Fluorocarbon Centering Ring
CENTERING RING,SS,QF50,FKM.
(please log in)
QF50-200-SRV
$15.10
In Stock
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Contact Us - Manual Brass Ball Valves