
Vacuum valves
A vacuum valve is used to isolate a chamber, provide relief, control and regulate conductance or gas flow or vent the chamber.
The vacuum valve can be of type, angle, gate, check, ball, shut off, needle, diaphragm, butterfly, in-line or straight through and with manual, solenoid, pneumatic or electro-pneumatic actuation. Different valves are normally used in rough or low vacuum, high vacuum HV and ultra high vacuum UHV.
We normally have many vacuum valves on stock.
Special vacuum valves
300 Torr liter/s to 10-10 Torrr liter/s.
Angle vacuum valves
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Manual angle valves with O-ring bonnet seal. NW16KF-NW50KF.
Bellows sealed. Stainless steel bellows and housing.
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Pneumatic angle valves with O-ring bonnet seal. NW16KF-NW50KF
Bellows sealed. Stainless steel bellows and housing.

Manual angle valves with O-ring bonnet seal. NW63IS0-NW100IS0.
Bellows sealed. Stainless steel bellows and housing.

Pneumatic angle valves with O-ring bonnet seal. NW63IS0-NW200IS0.
Bellows sealed. Stainless steel bellows and housing.

Manual angle valves with bonnet seal of metal NW16CF-NW100CF.
Bellows sealed. Stainless steel bellows and housing.

Pneumatic angle valves with bonnet seal of metal NW16CF-NW100CF.
Bellows sealed. Stainless steel bellows and housing.
Gate vacuum valves
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Manual gate valves 16CF-F 1.33-CF-F 14.00
Bellows sealed actuator. Stainless steel bellow and housing.

Pneumatic gate valves 16CF-F 1.33-CF-F 16.50
Bellow sealed actuator. Stainless steel bellow and housing.
Special vacuum valves
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Number | Flange |
---|---|
A42170 | 10/14 pipe |
A42171 | NW16KF |
Stainless Steel.

Number | Size |
---|---|
100240 | NW16KF |
Needle valve for control of gas flow, conductance control or for venting of small chambers or slow venting of larger.

Number | Size |
---|---|
A46100 | NW16KF |
A46101 | NW25KF |
A46102 | NW40KF |
For control of gas flow, conductance control or for venting. Al body.

Number | Size |
---|---|
I27160 | G 1/4" |
I27161 | G 3/8" |
I27162 | G 1/2" |
I27163 | G 1" |
Opens if the pressure gets to low.

Number | Size |
---|---|
V42200 | NW16KF |
V42201 | NW25KF |
V42202 | NW40KF |
V42203 | NW50KF |
Stainless steel SS316
Angle vacuum valves
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Number | Size | OD | A | B | C | D |
---|---|---|---|---|---|---|
V42100 | NW16KF | 19.05 | 40 | 121.9 | 141.5 | 56.8 |
V42101 | NW25KF | 25.4 | 50 | 128.6 | 148.1 | 56.8 |
V42102 | NW40KF | 38.1 | 65 | 167.5 | 200 | 75.8 |
V42103 | NW50KF | 50.8 | 70 | 190.5 | 235.5 | 88.4 |
Bellow sealed and stainless steel.
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
Number | Size | OD | A | B | C |
---|---|---|---|---|---|
V42110 | NW16KF | 19.05 | 40 | 142 | 56.8 |
V42111 | NW25KF | 25.4 | 50 | 149 | 56.8 |
V42112 | NW40KF | 38.1 | 65 | 203 | 75.8 |
V42113 | NW50KF | 50.8 | 70 | 246 | 88.4 |
- Bellow sealed.
- 304 stainless steel bellows.
- Polished 304 stainless steel body.
- Viton O-ring bonnet seal.
- Viton®* O-ring poppet seal.
- Bakeble to 150°C.
- Leak rate <2 x 10-9 mbarl/s.
- Number of cycles before service: ~ 500 000
- Air to open, spring to close.
Number | Size | OD | A | B | C |
---|---|---|---|---|---|
V42160 | NW16KF | 19.05 | 40 | 158 | 56.8 |
V42161 | NW25KF | 25.4 | 50 | 164.3 | 56.8 |
V42162 | NW40KF | 38.1 | 65 | 214 | 75.8 |
V42163 | NW50KF | 50.8 | 70 | 251.3 | 88.4 |


Number | Size | OD | A | B | C | D |
---|---|---|---|---|---|---|
V42104 | NW63ISO | 63.6 | 88 | 224 | 291.5 | 101.6 |
NW80ISO | 76.2 | 98 | 236 | 295.5 | 114.3 |
Bellow sealed and stainless steel.


Number | Size | OD | A | B | C |
---|---|---|---|---|---|
V42114 | NW63ISO | 63.5 | 88 | 277 | 99.5 |
NW80ISO | 76.2 | 98 | 294 | 114 | |
V42115 | NW100ISO | 101.6 | 108 | 346.6 | 151.6 |
V42116 | NW160ISO | ||||
V42117 | NW200ISO |
Bellow sealed and stainless steel.


Number | Size | OD | A | B | C |
---|---|---|---|---|---|
V42120 | NW16CF-R | 19.05 | 38 | 120.7 | 57.15 |
V42121 | NW35CF-R | 38.1 | 63 | 170.8 | 76.2 |
V42122 | NW63CF-R | 63.5 | 105 | 241 | 113,6 |
NW100CF-R | 151.6 |
Bellow sealed and stainless steel.
Gate vacuum valves
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Number | Size |
---|---|
NW16KF | |
NW40KF | |
NW50KF |
- Stainless steel bellow and housing
- Very small inner surface area
- Body and all major internal components are vacuum furnace brazed at 1100 oC at 1x10-6 Torr
- Bonnet seal: viton®*
- Gate seal: viton®*

Number | Size |
---|---|
NW16KF | |
NW40KF | |
NW50KF |
- Stainless steel bellow and housing
- Very small inner surface area
- Body and all major internal components are vacuum furnace brazed at 1100 oC at 1x10-6 Torr
- Bonnet seal: viton®*
- Gate seal: viton®*

Number | Size |
---|---|
NW63ISO | |
NW100ISO | |
NW160ISO | |
NW200SO | |
NW250ISO | |
NW3000ISO |
- Stainless steel bellow and housing
- Very small inner surface area
- Body and all major internal components are vacuum furnace brazed at 1100 oC at 1x10-6 Torr
- Bonnet seal: viton®*
- Gate seal: viton®*

Number | Size |
---|---|
NW63ISO | |
NW100ISO | |
NW160ISO | |
NW200SO | |
NW250ISO | |
NW300ISO | |
NW400ISO | |
NW500ISO | |
NW600ISO |
- Stainless steel bellow and housing
- Very small inner surface area
- Body and all major internal components are vacuum furnace brazed at 1100 oC at 1x10-6 Torr
- Bonnet seal: viton®*
- Gate seal: viton®*

Number | Size OD |
---|---|
CF-F 1.33 | |
CF-F 2.73 | |
CF-F 3.37 | |
CF-F 4.47 | |
CF-F 6.00 | |
CF-F 8.00 | |
CF-F 10.00 | |
CF-F 14.00 |
- Stainless steel bellow and housing
- Very small inner surface area
- Body and all major internal components are vacuum furnace brazed at 1100 oC at 1x10-6 Torr
- Bonnet seal: OFHC copper*
- Gate seal: viton®*

Number | Size OD |
---|---|
CF-F 1.33 | |
CF-F 2.73 | |
CF-F 3.37 | |
CF-F 4.47 | |
CF-F 6.00 | |
CF-F 8.00 | |
CF-F 10.00 | |
CF-F 14.00 | |
CF-F 16.50 |
- Stainless steel bellow and housing
- Very small inner surface area
- Body and all major internal components are vacuum furnace brazed at 1100 oC at 1x10-6 Torr
- Bonnet seal: OFHC copper*
- Gate seal: viton®*
*Viton® is a registered trademark of DuPont Performance Elastomers.