PD42-M41 Piloted 3-Way Spool, Internal Vent (PD42-M41)
A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic directional valve for three-way circuits requiring remote pilot actuation.
Product Operation
In neutral (unpiloted), the PD42-M41 allows flow from ➂ to ➃ while ➁ is blocked.On remote pilot signal at ➀, the valve shifts to open from the ➂ to ➁ flow path, while blocking flow to ➃Note that ➃ is common to the spring chamber. Pressure on ➃ will directly (1:1) affect required pilot pressure and must always be added to the bias spring value.
Note: Consult factory for applications where bi-directional flow is required when the
valve is in the normal or spring-offset position.
Product Features
• Hardened spool and cage for long life.• Optional sealed pilot.• Industry-standard ISO cavity.
Product Ratings
Maximum Operating Pressure: With Polyurethane Seals: Ports ➀, ➁, & ➂: 345 bar (5000 psi); Port ➃: 210 bar (3000 psi)
Flow: See Performance Chart
Internal Leakage at Maximum Operating Pressure: Ports ➁, ➂, & ➃: 246 cc/minute (15 cu. in./minute);Port ➀: 524 cc/minute (32 cu. in./minute)With the sealed pilot there is no leakage at ➀ at maximum operating pressure.
Pilot Pressure Required: To Begin Spool Movement: 11 bar (160 psi)To Bring Spool to Cross-Over Point:
16.2 bar (235 psi)To Fully Shift the Spool:
18.3 bar (265 psi)
Oil Volume Required to Full Shift: 2.5 cc (0.15 cu. in.)
Temperature: -40 to 120°C with standard Buna 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
Cavity Tool: CT42-M4XX; See page 8.600.1
Seal Kit: SK42-4X-MMM; See page 8.650.1
