DIRECTIONAL VALVES
HPD16-S51 HyPerformance
TM
Piloted 3-Way Spool
DESCRIPTION
A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic directional valve for
use in high pressure applications.
OPERATION
When in neutral the HPD16-S51 allows flow between ports 2, 3 and 4. On remote
pilot signal at 1, the valve’s spool shifts to block all ports. 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 increase the required pilot pressure at a 1:1 ratio.
FEATURES
• Hardened spool and cage for long life.
• All HyPerformance™ products are tested to the rigorous standards
of the NFPA specification T2.6.1.
• All HyPerformance™ valves are tested at a verification level of 90%
and an assurance of 99%.
RATINGS
Operating Pressure: 350 bar (5075 psi); 10% cycle life: 420 bar (6090 psi)
Note: All HyPerformance™ products are tested for 900K cycles at 350 bar
and 100K at 420 bar.
Proof Pressure: 690 bar (10000 psi)
Burst Pressure: 1380 bar (20000 psi)
Flow: Up to 151 lpm (40 gpm) with PPDI urethane seals and no flow restriction; up
to 151 lpm (40 gpm) with seales spool between ports 1 and 2 and restricted flow
between ports 2 and 3 and 3 and 4 up to 95 lpm (25 gpm) maximum.
Internal Leakage: 350 bar (5075 psi) at 32 cSt. Ports 3 to 4: 492 ml/min
(30 cu.in./min); Ports 3 to 2: 655 ml/min (40 cu.in./min);
Pilot Pressure: 350 bar (5075 psi).
Operating Temperature: -54 to 107°C (-65 to 225°F) with PPDI urethane 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: HVC16-S5; See page 9.116.1
Cavity Tool: HCT16-5XX; See page 8.600.1
Seal Kit: HSK16-S5U-0000 (Urethane); See page 8.650.1
ISO SYMBOL
PERFORMANCE
(Cartridge Only)
4.383.3
HYDRAFORCE
.com
®
8.6/125
10.3/150
12.1/175
13.8/200
15.5/225
6.9/100
5.2/75
3.4/50
1.7/25
37.9
10
75.8
20
113.6
30
151.4
40
FLOW lpm/gpm
PRESSURE DROP bar/psi
3 to 2 - - - - -; 3 to 4 ———
3 to 2 and 4 — - — -
32 cSt/150 sus oil at 40°C
Blue rectangles are links to other catalog pages.
Cartridge: Weight: 0.80 kg. (1.75 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
PPDI Urethane seals without
back-up rings standard.
Ported Body: Weight: 8.09 kg
(17.79 lbs) HyPerformance™
Ductile iron (code 'D') standard.
Rated to 345 bar (5000 psi).
See page 8.016.1.
DIMENSIONS
MATERIALS TO ORDER
HPD16-S51
4.383.4
HPD16-S51 - __ __ __ - __ - __ __ __
Bias Spring
150 10.3 bar (150 psi)
Optional bias springs considered
on OEM request.
®
HYDRAFORCE
HYDRAFORCE
.com
®
Seals
U PPDI Urethane
US Sealed spool between ports 1 and 2
Note: Consult factory for additional seal options.
4.79
121.7
1.52
38.5
INCH
MILLIMETRE
3.25
82.6
1.75
44.5
4.00
101.6
6.00
152.4
0.50
12.7
0.57
14.5
2.88
73.0
0.38
9.5
0.34/8.7 Dia. Mounting Holes (2)
5.63
142.9
3.00
76.2
1.63
41.3
2.00
50.8
4.00
101.6
ACROSS FLATS
1.55
39.2
TORQUE
220 to 230 ft-lbs
(298 to 312 Nm)
ORIFICE DISC CANNOT
BE USED WITH THIS PRODUCT
due to HyPerformance
TM
Cavity.
Ductile iron
body shown
Porting
Cartridge Only 0
3/4" BSP 6BD
1" BSP 8BD
SAE12 12TD
SAE 16 16 TD
