DIRECTIONAL VALVES
PD12-S61N Piloted, 2-Position, 4-Way Spool
DESCRIPTION
A screw-in, cartridge-style, pilot-operated, 2-position, 4-way, spool-type, hydraulic
directional valve.
OPERATION
In the neutral position, the PD12-S61N allows fl ow between ports ➁ and ➂ and
between ports
➃ and ➄. On remote pilot signal at ➀, the valve shifts to allow fl ow
between ports
➂ and ➃, while blocking ports ➁ and ➄.
The spring chamber is vented to the tank through port
➅. The vented spring chamber
allows the valve to be fully pressurized at ports
➀, ➁, ➂, ➃ and ➄ without affecting
required pilot pressure. Pressure at
➅ will affect required pilot pressure.
FEATURES
• Hardened spool and cage for long life.
• 110 and 170 psi bias springs available.
RATINGS
Maximum Operating Pressure: 240 bar (3500 psi)
Flow: 0 to 56 lpm (0 to 15 gpm); See Performance Chart
Internal Leakage: Maximum leakage at 240 bar (3500 psi):
197 ml/minute (12 cu. in./minute).
Temperature: -40 to 120°C (-40 to 248°F)
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: VC12-S6; See page 9.112.1
Cavity Tool: CT12-S6XX; See page 8.600.1
Seal Kit: SK12-S6X-BMMMM; See page 8.650.1
USASI:
ISO:
SYMBOLS
4.392.1
PERFORMANCE (Cartridge Only)
1.4/20
0.7/10
11.4
3
34.1
9
FLOW lpm/gpm
PRESSURE DROP bar/psi
32 cSt/150 sus oil at 40°C
45.4
12
56.8
15
2.1/30
2.8/40
3.4/50
4.1/60
22.7
6
➂ to ➁
➂ to ➃
➃ to ➄
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Cartridge: Weight: 0.21 kg. (0.46 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-ups standard.
Ported Body: Test housing available;
see page 8.012.1.
DIMENSIONS
MATERIALS
TO ORDER
PD12-S61N
4.392.2
PD12-S61N- __ - __ __ - __ __ __
Porting
Cartridge Only 0
1.54
39.1
4.72
119.9
1.25
31.8
ACROSS
FLATS
TORQUE–
35 ft-lbs
(47.4 Nm)
max.
MILLIMETRE
INCH
Seals
N Buna N (Std.)
NS Buna N with Sealed Spool between
➀ and ➁
V Fluorocarbon
VS Fluorocarbon with Sealed Spool between
➀ and ➁
Bias Spring
110 7.6 bar (110 psi)
170 11.7 bar (170 psi)
®
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®
Blue rectangles are links to other catalog pages.