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189

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)