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

HNV12-20

NEEDLE VALVE

Overview

Description

HNV12-20 is a screw-in, cartridge style, variable orifice, hydraulic flow restrictor valve

Operation

The valve increases its orifice size from fully closed to fully open with counter-clockwise adjustment rotation

Features

  • Rated for high pressure operation.
  • Compact size.
  • Can be used with HyPerformance™ ductile iron body or standard ductile iron body.
  • Adjustments cannot be backed out of the valve.
  • Desired settings may be locked down.
  • Hardened parts for long life.
  • Variety of adjustment options available.
  • Positive shut-off.
  • Linear adjustment.

Ratings

Pressure Ratings
Pressure rating
350 bar (5075 psi)
Proof pressure
689 bar (10000 psi)
Burst pressure
1379 bar (20000 psi)
Flow Ratings
Flow rating
See pressure drop vs. Flow chart
Maximum internal leakage
0.15 ml/min (3 drops/min) Max at shut-off
Temperature Ratings
Maximum operating fluid temperature
40 to 100 °C (40 to 212 °F) With buna N seals
26 to 204 °C (15 to 400 °F) With fluorocarbon seals
54 to 107 °C (65 to 225 °F) With urethane seals
Storage temperature
40 to 70 °C (-40 to 160 °F)
Ambient temperature
40 to 70 °C (-40 to 160 °F)
Other Ratings
Corrosion protection
960 hr salt spray per ASTM b117

Operating Parameters

Fluids
Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range
7.4 to 420 cSt
Maximum operating contamination level
18/16/13 per iso4406

Properties

Adjustment torque
0.3 to 0.6 N-m (3 to 5 in-lb) At 345 bar (5000 psi)
Cartridge weight
0.32 kg (0.50 lb) Option A
Internal wetted surface area
94.2 cm² (14.6 in²)

Performance

HNV12-20_Flow-Pressure_Flow-Turns

Dimensions

HNV12-20_Dim

Materials

Materials

Cartridge: Weight (with Adjustment Option A: 0.32 kg (0.50 lb) Steel with hardened work surfaces. Zinc-plated exposed surfaces. Urethane seals standard. Anodized aluminum knobs.

Standard Ported Body: H-series ductile iron, or standard ductile iron, rated to 345 bar (5000 psi); anodized high-strength aluminum alloy, rated to 207 bar (3000 psi) also available; available; dimensions may differ.

Installation Specifications

Cavity
VC12-2
Hvc12-2
Cartridge installation torque
156 to 170 N-m (115 to 125 ft-lb)
Orientation restriction
None

Accessories

Seal kit
SK12-2N-M-115 Buna N
SK12-2V-M-115 Fluorocarbon
SK12-2U-0 Urethane

Order code

HNV12-20_Order