Fabricated From type 304 stainless steel With all internal welds using the tungsten inert gas welding process. Internal welds are instpected for pits, cracks, andother irregularities that may cause virtual leaks.

Welded type AM 350 stainless steel nesting bellows with additional convolutions for extended operating.(or Viton O-Ring Seal)

Viton^R O-Ring Optional Kalrez^R O-Ring are available.

Viton^R O-Ring. Kalrez^R O-Ring available on request.

Viton^RO-Ring or NBR-QUAD-Ring

Under vacuum, 200`C intermittently maximum in the open position. 150`C sustained. 
Contact us for higher temperature requirements.

Each valve is tested with a helium mass spectrometer leak detector and is guaranteed 
vacuum tight at aminimum sensitivity of 2¡¿10^-10 std.cc/sec.

Air Pressure: 70-100 psig. 
Elextrical Power: 115VAC(or 220VAC,24VDC),. 60 Hz. 
             ( Other power requirements available on request.) 
Loss of Power: Valves close.

Manual models employ a rising acme thread for smooth operation

Valves can be installed in either vertical or horizontal orientation.

2-1/2 inch and smaller valves will seal against 15 psi differential atmospheric pressure in either direction.

Internal mechanism may be removed by removing bolts in the bonnet flange for O-ring replacement,cleaning, etc., without removing the valve body from the system. Replacemnt parts are available from stock.

Valves are guaranteed free of defects in construction and workmanship for one year. 

ISO NW Valve

Part Number

Valve Size

Price

Bellows Type Price

APV-NW 16

KAPVNW16

3/4"

upon request

upon request

APV-NW 20

KAPVNW20

1"

APV-NW 25

KAPVNW25

1"

APV-NW 40

KAPVNW40

1 1/2"

APV-NW 50

KAPVNW50

2"

APV-NW 63

KAPVNW63

"

APV-NW 80

KAPVNW80

3"

APV-NW 100

KAPVNW100

4"

APV-NW 150

KAPVNW150

6"

APV-NW 200

KAPVNW200

"

APV-NW 250

KAPVNW250

"

ISO Valve

Part Number

Valve Size

Price

Bellows Type Price

AMV-NW 16

KAMVNW16

3/4"

upon request

upon request

AMV-NW 20

KAMVNW20

1"

AMV-NW 25

KAMVNW25

1"

AMV-NW 40

KAMVNW40

1 1/2"

AMV-NW 50

KAMVNW50

2"

AMV-NW 63

KAMVNW63

"

AMV-NW 80

KAMVNW80

3"

AMV-NW 100

KAMVNW100

4"

AMV-NW 150

KAMVNW150

6"

AMV-NW 200

KAMVNW200

"

AMV-NW 250

KAMVNW250

"

JIS Valve

Part Number

Valve Size

Price

Bellows Type Price

JIS-15 A

KAPVJIS15A

3/4"

upon request

upon request

JIS-20 A

KAPVJIS20A

1"

JIS-25 A

KAPVJIS25A

1"

JIS-40 A

KAPVJIS40A

1 1/2"

JIS-50 A

KAPVJIS50A

2"

JIS-65 A

KAPVJIS65A

"

JIS-80 A

KAPVJIS80A

3"

JIS-100 A

KAPVJIS100A

4"

JIS-150 A

KAPVJIS150A

6"

JIS-200 A

KAPVJIS200A

"

JIS-250 A

KAPVJIS250A

"

APV - NW16

311072

NW16

55

58

97

60

30

157

APV - NW25

311073

NW25

55

58

97

60

40

157

APV - NW40

311075

NW40

55

76

110

63

55

173

APV - NW50

311077

NW50

55

89

130

80

75

210

APV - NW80

311079

NW63

118

128

185

120

110

358

APV - NW100

311081

NW80

118

158

223

130

130

406

APV - NW16

311072

NW16

31

58

99

60

30

159

APV - NW25

311073

NW25

31

58

99

60

40

159

APV - NW40

311075

NW40

45

76

113

63

55

176

APV - NW50

311077

NW50

58

89

132

80

75

212

APV - NW80

311079

NW63

70

128

194

120

110

314

APV - NW100

311081

NW80

70

158

230

130

130

360