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Check valve Type: 3256N Stainless steel Internal thread (NPT) PN40
Product documents
Document
Document type
Product Manual
Installation Operation Manual
(PDF)
Product overview
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Tables
Size table
DN
G
H
L
Opening pressure
Weight
[mm]
[mm]
[bar]
[kg]
15
½ "
36
65
0.2
0.22
20
¾ "
44
75
0.2
0.37
25
1 "
57
90
0.2
0.72
32
1 ¼ "
64
111
0.2
1.24
40
1 ½ "
76
121
0.2
1.74
50
2 "
87
151
0.2
2.62
Pressure and temperature range
Temperature
120
180
[°C]
Maximum working pressure
40
5
[bar]
Stock item
Stock item (2)
Stock item
Norm: ASME
Norm: ASME
Construction type: Free-flow
Construction type: Free-flow
Housing material: Stainless steel
Housing material: Stainless steel
Material quality: ASTM A351 CF8M
Material quality: ASTM A351 CF8M
Nominal inner diameter
1" (25) (1)
1.1/2" (40) (1)
1/2" (15) (1)
2" (50) (1)
3/4" (20) (1)
Nominal inner diameter
Connection: Internal thread (NPT)
Connection: Internal thread (NPT)
Pressure rating: PN40
Pressure rating: PN40
Face to Face length (mm)
66 (1)
76 (1)
90 (1)
121 (1)
152 (1)
Face to Face length (mm)
Valve shape: Flap
Valve shape: Flap
Sealing: PTFE
Sealing: PTFE
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