MECHANICAL FLOW CONTROLS
4484 Boeing Drive Rockford, IL 61109 • USA • Phone +1 (815) 397-6628 • Fax +1 (815) 397-2526
mail: delta@delta-power.com • www.delta-power.com
WARNING: the specications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described (herein). Any specic application should not be undertaken
without independent study, evaluation, and testing for suitability.
W 51 / 12-2022
PB-NVA ADJUSTABLE FLOW CONTROL VALVE, NEEDLE TYPE
DESCRIPTION
8 size, 3/4-16 thread, “Power” series, needle ow control.
OPERATION
The PB-NVA adjusts from fully open to fully closed by turning adjusting screw clockwise. When adjusted open the
valve allows ow from (1) to (2) and (2) to (1). When fully closed the valve blocks ow from (1) to (2) and (2) to (1).
FEATURES
• Hardened parts for long life.
• Industry common cavity.
0
50
100
150
200
250
20
300
64 8
Flow (GPM)
0
5
10
15
20
0
Pressure Drop (PSI)
5 10 15 20 3025
Flow (LPM)
Pressure Drop (bar)
Port 1 to 2 (valve fully open)
VALVE SPECIFICATIONS
Nominal Flow 6 GPM (23 LPM)
Rated Operating Pressure 3500 PSI (241 bar)
Viscosity Range 36 to 3000 SSU (3 to 647 cSt)
Filtration ISO 18/16/13
Media Operating Temp. Range -40° to 250°F (-40° to 120°C)
Weight .22 lbs (.10 kg)
Operating Fluid Media General Purpose Hydraulic Fluid
Cartridge Torque Requirements 25 ft-lbs (34 Nm)
Cavity POWER 2W
Cavity Form Tool (Finishing) 40500005
Seal Kit 21191102
PERFORMANCE
Actual Test Data (Cartridge Only)
HYDRAULIC SYMBOL
1
2
MECHANICAL FLOW CONTROLS
4484 Boeing Drive Rockford, IL 61109 • USA • Phone +1 (815) 397-6628 • Fax +1 (815) 397-2526
mail: delta@delta-power.com • www.delta-power.com
WARNING: the specications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described (herein). Any specic application should not be undertaken
without independent study, evaluation, and testing for suitability.
W 51 / 12-2022
DIMENSIONS
ORDERING INFORMATION
PB-NVA – –
OPTIONS BODIES
Buna Standard 00 Blank Without Body
Viton Standard V0 N 1/4” NPTF Ports
Buna, Knob 0K S #6 SAE Ports
Viton, Knob VK
Buna, Screen A0
Viton, Screen W0
Buna, Screen, Knob AK
Viton, Screen, Knob WK
Note: use screen only if ow
direction is from (1) to (2).
Body Weight: .39 lbs (.18 kg)
