Symbol
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 HyPerformanceâ„¢ 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.
Overview
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) - Note: Max at shut-off
Temperature Ratings
Operating fluid temperature
40 to 100 °C (40 to 212 °F) - Note: With buna N seals
26 to 204 °C (15 to 400 °F) - Note: With fluorocarbon seals
54 to 107 °C (65 to 225 °F) - Note: 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) - Note: At 345 bar (5000 psi)
Unit weight
0.32 kg (0.50 lb) - Note: Option A
Internal wetted surface area
94.2 cm² (14.6 in²)
HNV12-20
hydraforce.com
NEEDLE VALVE
hydraforce.com
1/21/2021
HNV12-20
Performance
Dimensions
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 - Note: Buna N
SK12-2V-M-115 - Note: Fluorocarbon
SK12-2U-0 - Note: Urethane
Housings
HNV12-20
hydraforce.com
NEEDLE VALVE
hydraforce.com
1/21/2021
HNV12-20
Order Code
HNV12-20
hydraforce.com
NEEDLE VALVE
hydraforce.com
1/21/2021
HNV12-20
