A-1
Block Valves: Instruction Manual for All Sizes
D
R
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FT 9/
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/04
Appendix A. Technical Specifications
Table A-1 lists the block valve specifications.
Table A-1
Block Valve Specifications
NW 16
NW 25
NW 40
NW 50
ISO 63
ISO 80
Conductance
3 liters/sec
12 liters/sec
32 liters/sec
61 liters/sec
100 liters/sec
155 liters/sec
Main Seal Leak Rate
≤
1 x 10
-9
std cc/sec Helium
Body Leak Rate
≤
1 x 10
-10
std cc/sec Helium
Materials
Valve Body
Aluminum (6061-T6) or stainless steel
Bellows
Stainless Steel T300 Series
O-rings, vacuum
Viton V747-75
Air Piston
Viton V747-75
Baking Temperature
Manual valve
80° C (176° F)
150° C (302° F)
Pneumatic valve
80° C (176° F) without solenoid
150° C (302° F) without solenoid
60° C (140° F) with solenoid
60° C (140° F) with solenoid
Miscellaneous
Service Life Bellows
1,000,000 cycles
Manual valve,
number of turns to
open (seated to
fully open)
6
9
Pneumatic Valve
Air connection
1/8 NPT
Air pressure
80 psig (minimum)
100 psig (minimum)
Open/close time
<1 second
Actuation
Spring closed, air opened
Power loss
Valve closes
Содержание L6280
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