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The company reserves the right to vary models and dimensions without notice.
These products are designed for industrial applications and are not suitable for sale to the general public.
Automatic Valves NPTF
5
NORTH AMERICAN FITTINGS & FLOW CONTROL VALVE CATALOG
>
Release 8.6
AUTOMATIC VALVES NPTF
CODING EXAMPLE
VB
SERIES:
VB
U
VERSIONS:
U = unidirectional (pilot-operated check valve)
O = bidirectional (blocking valve)
1/8
PORTS:
1/8 Sprint, NPTF compatible
1/4 Sprint, NPTF compatible
06 = 3/8” NPTF
VB U 1/8
6512
DIAGRAM OF THE PILOT PRESSURE (Pilot Connection 5/32” Tube OD)
This diagram shows the relation between working pressure (Px) and
pilot pressure required in order to operate the valve (Py).
The opening pressure of the unidirectional valve is 0.3 bar (4.35 psi).
29
58
87
116
145 Working Pressure (PSI)
116
101.5
87
72.5
58
43.5
29
14.5
Pilot
Pressure
(PSI)