DIRECTIONAL VALVES
PD16-S50 Piloted 3-Way Spool
DESCRIPTION
A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic directional valve.
OPERATION
When in neutral the PD16-S50 allows flow between ports 3 and 2 while blocking at
4. On remote pilot signal at 1, the valve’s spool shifts to allow flow between 3 and
4, while blocking at 5. The spring chamber is vented to the tank through port 5. The
vented spring chamber allows the valve to be fully pressurized at ports 1, 2, 3, and
4 without affecting required pilot pressure. Pressure at port 5 will affect required pilot
pressure.
FEATURES
• Hardened spool and cage for long life.
• 50, 70, 100 and 150 psi bias springs available.
RATINGS
Operating Pressure: 240 bar (3500 psi)
Flow: 0–170 lpm (0–45 gpm); See Performance Chart
Internal Leakage at 207 bar (3000 psi): 245 ml/minute (15 cu. in./minute);
Zero leakage from port 1 to port 2 with sealed spool.
Temperature: -40 to 120°C
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 A 6-way body can be used for this
valve by plugging body port 2 and using body ports 3, 4, 5 and 6 as ports 2, 3, 4
and 5 for the valve.
Cavity: VC16-S5; See page 9.116.1
Cavity Tool: CT16-S5XX; See page 8.600.1
Seal Kit: SK16-S5X-BMMM; See page 8.650.1
Open Transition Option:
SYMBOLS
PERFORMANCE
(Cartridge Only)
4.372.1
HYDRAFORCE
.com
®
38
10
76
20
114
30
151
40
189
50
FLOW lpm/gpm
6.9/100
8.6/125
5.2/75
3.4/50
1.7/25
PRESSURE DROP bar/psi
Ports 3 to 2 or 3 to 4
32 cSt/150 sus oil at 40°C
Blue rectangles are links to other catalog pages.
Cartridge: Weight: 0.68 kg. (1.50 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-ups standard.
Ported Body: Consult factory. A 6-way
body can be used for this valve by
plugging body port 2 and using body
ports 3, 4, 5 and 6 as ports 2, 3, 4
and 5 for the valve.
DIMENSIONS
MATERIALS TO ORDER
PD16-S50
4.372.2
PD16-S50 __ - __ __ __ - __ - __ __ __
Porting
Cartridge Only 0
Seals
N Buna N (Std.)
V Fluorocarbon
P Polyurethane
NS Buna N w/Sealed Spool
VS Fluorocarbon w/Sealed Spool
PS Polyurethane w/Sealed Spool
Bias Spring
†
50 3.4 bar (50 psi)
70 4.8 bar (70 psi)
100 6.9 bar (100 psi)
150 10.3 bar (150 psi)
†
Note: 100 psi bias spring is the minimum
required for use with sealed spool.
®
HYDRAFORCE
HYDRAFORCE
.com
®
4.00
101.6
2.03
51.6
1.50
38.1
ACROSS FLATS
TORQUE:
50 ft-lbs (67.7 Nm)
max.
INCH
MILLIMETRE
Option
None
(Blank)
Open Transition N
Blue rectangles are links to other catalog pages.
