Dimensions and mass
Working pressures and temperatures
 Face-to-face length
The NAF-Check valve is manufactured with face-to-face lengths in accordance with ANSI and ANSI-API 594.
Connection
The NAF-Check valve is manufactured in accordance with ANSI Class 150 and 300 for clamping between pipe flanges.
| Test pressures |
Pressure |
Test pressure*, psi |
class, |
Guage pressure - water |
ANSI |
Open valve |
Closed valve |
| |
Carbon |
Stainless |
Carbon |
Stainless |
| |
steel |
steel |
steel |
steel |
150 |
425 |
425 |
285 |
275 |
300 |
1100 |
1075 |
740 |
720 |
| * Leakage does not exceed 0.061 cu.in/minute, irrespective of size, at the specified test pressures. Test medium is water. |
Material specifications - see figure above
Valve code table
Introduction
Installation & Maintenance
PN 25-40-100 Class
Limitations
Certification
Sizing & Pressure Drop
|
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