Pneumatic Bellows Sealed SS Angle Valves (ASA flanged)

Reliable, economical, general-purpose components for HV and UHV applications requiring cleanliness and corrosion resistance.

In the open position

• Edge-welded bellows and valve seat move out of the gas path thereby achieving high conductance

Features

• Helium leak tested before shipment using a helium mass spectrometer with a sensitivity of 2 x 10^-10 std. cc/sec.
• Poppet seals are fluorocarbon o-rings
• Bonnet seals can be fluorocarbon or copper gaskets (select copper for higher temperature bakeout and better ultimate vacuum)
• Normal repairs can be made without removing the valve body from the system

Pneumatic models also feature

• Spring-to-close operation on valves ≤ 2", 2-1/2" and larger are air-to-open air-to-close
• Require a solenoid (sold separately, see accessories)

NOTE: Kurt J. Lesker Company list a wide variety of standard tube sizes from 3/8" to 4". Other sizes and valves with mixed flanges are available on request.