NV10-21 Hydraulic Cartridge Needle Valve

Flow Control Valves

NV10-21 — Needle Valve with Positive Shut-Off

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NV10-21 Valve

SYMBOL:
NV10-21 Valve symbol

DESCRIPTION
A screw-in, cartridge-style, variable orifice, hydraulic flow restrictor valve.
It is intended for applications requiring fine adjustment over multiple turns.

OPERATION
The NV10-21 increases its orifice value from fully-closed to fully-open with
counterclockwise adjustment rotation. Effective adjustment is linear to eight turns.
Note: This is intended as a low-effort adjustment suitable for operation through linkage.
It may be unsuitable in environments where vibration is present.

FEATURES
• Adjustments cannot be backed out of the valve.
• Hardened parts for long life.
• Fine/Low-effort adjustment.
• Linear adjustment.
• Positive shut-off.
• Industry-common cavity.

RATINGS
Operating Pressure: 241 bar (3500 psi)
Flow: 57 lpm (15 gpm) max. nominal at 11 bar (160 psi) at full open 9 turns
Internal Leakage: 0.05 cc/minute (1 drop/minute) max. at shut-off
Adjustment Torque Required: 0.34 Nm (3 inch-pounds) at 7 bar (100 psi);
   0.68 Nm (6 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
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: VC10-2; See page 9.110.1_2w
Cavity Tool: CT10-2xx; See page 8.600.1
Seal Kit: SK10-2x-M; See page 8.650.1

PERFORMANCE:
NV10-21 Valve Performance Chart

DIMENSIONS:
NV10-21 Valve Dimensions

MATERIALS:

Cartridge: Weight: 0.15 kg. (0.33 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 8.010.1_2w.

ORDERING CHART:

NV10-21 Ordering Chart