Page 30 - Parker - Proportional Valves

Catalog HY15-3502/US N.C. Proportional Needle Valve
Technical Information Series DF201C

CV
General Description
Normally Closed Proportional Needle Valve. This valve
is designed specifically for bleed off or unloading
Valves
Check
SH circuits. Back pressure will affect performance. For
additional information see Technical Tips on pages
PV1-PV6.

Features
Shuttle
Valves
LM
• On-off type solenoids
• Low hysteresis
• PWM signal preferred
Controls
Load/Motor
• All external parts zinc plated (1)
FC
Inlet
(2)
(2)
Flow
Controls
Outlet
PC (1)

Pressure
Controls
LE Specifications Performance Curves
Rated Flow Low Watt 180 LPM (48 GPM) Pressure Drop vs. Flow @ 100% Current
Valve Fully Open High Watt 227 LPM (60 GPM) PSI Bar Hydraulic Oil 150 SSU @ 100°F (32 cSt)
500 36.2
Elements
Logic
Maximum Inlet 210 Bar (3000 PSI)
DC Pressure
400 29.0
3
Leakage at 125 cc/min. (7.6 in /min.) P)
150 SSU (32 cSt) Low Watt
Controls
Directional
Hysteresis 4% 300 21.7
MV @ 200 Hz PWM Pressure Drop (
Cracking 20% - 30% of Input Signal 200 14.5
(Dead band) High Watt
Frequency 100 - 400 Hz (200 Hz Preferred) 100 7.2
Manual
Valves
SV
Maximum Control 12 VDC 24VDC
Current Low Watt 1.75A .91A 0
LPM 38 76 113 151 189 227
High Watt 2.45A 1.23A 0
GPM 10 20 30 40 50 60
Cartridge Material All parts steel. All operating Flow (Q)
Valves
Solenoid
PV parts hardened steel.
Flow vs. Input Signal (Current)
Operating Temp. -40°C to +93.3°C (Nitrile)
GPM LPM Hydraulic Oil 150 SSU @ 100°F (32 cSt)
Range/Seals (-40°F to +200°F) 60 227
-31.7°C to +121.1°C (Fluorocarbon)
Proportional
Valves
(-25°F to +250°F) High Watt @
CE 50 189 207 Bar
Fluid Mineral-based or synthetic with Low Watt @ (3000 PSI)
207 Bar (3000 PSI)
Compatibility/ lubricating properties at viscosities 40 150
Viscosity of 45 to 2000 SSU (6 to 420 cSt)
Coils &
Electronics
Filtration ISO Code 16/13, Flow (Q) 30 113
BC SAE Class 4 or better
20 75
Approx. Weight .34 kg (0.75 lbs.)
Low Watt @
34.5 Bar (500 PSI)
Cavity C20-2
10 38
Cavities
(See BC Section for more details) High Watt @
Bodies &
TD 34.5 Bar (500 PSI)
Form Tool Rougher None 0
A 0 .5 1.0 1.5 2.0 2.5 3.0
Finisher NFT20-2F
Current in Amps
Technical
Data
PV29 Parker Hannifin Corporation
Hydraulic Cartridge Systems