Valves - Flow Controls - Non-compensated - Needle Valve - Fine Adjustment

NV08-21

NEEDLE VALVE FINE METERING ADJUSTMENT

Overview

Description

A screw in, cartridge style, variable orifice, hydraulic flow metering valve

Operation

It is intended for applications requiring fine adjustment over multiple turns

Features

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

Ratings

Flow Ratings
Flow rating
15 gpm At 250 psid at full open (5.5 turns) 250 psid
Maximum internal leakage
3 drops/min Max. At shut off
Pressure Ratings
Pressure rating
3500 psi
Temperature Ratings
Maximum operating fluid temperature
-40 to 120 °C (-40 to 248 °F)

Properties

Operating torque required
4 in-lb At 3500 psi

Performance

NV08-21_Flow-Pressure

Dimensions

NV08-21_Dim

Materials

Materials

Cartridge: Weight: 0.14 kg. (0.30 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard. Plastic knob with metal insert.

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.

Installation Specifications

Accessories

Order code

POSITION
CODE
DESCRIPTION
NV08-21F-H-J
F
Adjustment Option
F
E
Plastic Knob
F
T
Extended Shaft Only
H
Line Body
H
0
No Body
H
4T
Aluminum SAE 4
H
6T
Aluminum SAE 6
H
8T
Aluminum SAE 8
H
6TD
Ductile Iron SAE 6
H
8TD
Ductile Iron SAE 8
H
2B
Aluminum BSPP 1/4" (2)
H
3B
Aluminum BSPP 3/8" (3)
H
3BD
Ductile Iron BSPP 3/8" (3)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
NV08-21_Order