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Flow Control Valves

NV08-23 — Needle Valve, Fine Adjustment

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NV08-23 Valve

SYMBOL:
NV08-23 Valve symbol

DESCRIPTION
A screw-in, cartridge-style, variable orifice, fine adjustment, hydraulic flow restrictor valve.

OPERATION
The NV08-23 increases its orifice value from fully-closed to fully-open with counterclockwise
adjustment rotation.

FEATURES
• Adjustments cannot be backed out of the valve.
• Desired settings may be locked down.
• Hardened parts for long life.
• Aluminum knob option.
• Positive shut-off.
• Linear adjustment.
• Compact size.

RATINGS
Operating Pressure: 241 bar (3500 psi)
Flow: 38 lpm (10 gpm) nominal at 165 bar (2400 psi) fully open
Internal Leakage: 0.25 cc/minute (5 drops/minute) max. at shut-off
Adjustment Torque Required: 0.56 Nm (5 inch-pounds) at 7 bar (100 psi);
   5.41 Nm (48 inch-pounds) at 207 bar (3000 psi)
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with Fluorocarbon seals
   -54 to 104°C (-65°F to 225°F) with Polyurethane seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC08-2; See page 9.108.1_2w
Cavity Tool: CT08-2xx; See page 8.600.1
Seal Kit: SK08-2x-M; See page 8.650.1

PERFORMANCE:

NV08-23 Valve Performance Chart

DIMENSIONS: NV08-23 Valve Dimensions

MATERIALS:

Cartridge: Weight: 0.11 kg. (0.25 lbs.);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-ups standard. Anodized aluminum knobs.

Standard Ported Body: Weight: 0.16 kg. (0.35 lbs.); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions
may differ. See page 8.008.1_2w.

ORDERING CHART:

NV08-23 Ordering

Selection guide - similar valves.

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