SYMBOL:
 |
DESCRIPTION
A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic directional valve for two-way circuits requiring remote pilot actuation and vented spring chamber.
OPERATION
In neutral (unpiloted), the PD12-45 allows flow between 3 and 2. The spring chamber is directed to port 4.
On remote pilot signal at 1, the valve shifts to allow flow between 3 and 2.
Since port 4 is common to the spring chamber, pressure on 4 will directly (1:1) affect the pilot pressure required, and must always be added to the bias spring value.
FEATURES
• Hardened spool and cage for long life.
• Optional sealed pilot
• Industry-common ISO cavity.
RATINGS
Operating Pressure: with Polyurethane seals: Ports 1, 2, & 3: 345 bar (5000 psi);
Port 4: 210 bar (3000 psi)
Flow: up to 265 lpm (70 gpm)
Internal Leakage: 246 cc/minute (15 cu. in./minute) at 345 bar (5000 psi)
Pilot Pressure Required:
To Spool Cross-Over Point: 13 bar (188 psi)
To Fully Shift the Spool: 17.2 to 27.6 bar (250 to 400 psi)
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
-26° to 204°C (-15° to 400°F) with Fluorocarbon seals;
-54 to 107°C (-65°F to 225°F) with Polyurethane 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: VC42-M4; See page 9.142.1_4w
Cavity Tool: CT42-M4xx; See page 8.600.1
Seal Kit: SK42-4x-MMM; See page 8.650.1 |
