- All
surfaces exposed to vacuum are electropolished 304 stainless
steel with the exception of the bellows shaft seals which
are 300 series stainless steel
- All
welds are internal to avoid virtual leaks
- All
poppet seals are Elastomer
- Bonnet
seals are either metal or Elastomer
- Manual
valves use a double start acme thread for a minimum of turns
from fully closed to fully open
- Pneumatic
valves can be either air-to-open airto close or air-to-open
spring-to-close. Either style can be plumbed to close on
power failure
- All
valves actuators can be removed without removing valve body
from system
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- Poppet
and bonnet seals are made by small cross section o-ring
to minimize the amount of Elastomer exposed to system
- Unibody
construction - valve body and seat are machined from a solid
block to assure a surface with no virtual leaks.
- Actuators
can be switched from hand to pneumatic without removing
valve body from system
- Bakeable
to 200°C in open position
- Pressure
range atmosphere to 1x10-9 torr
- Electropneumatic
actuator:
-
70-100 psig
-
Electrical power 115 AC 60 HZ
-
Other power requirements available on request
- Valves
are unconditionally guaranteed for one year
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