DIRECTIONAL CONTROLS
HS52-43 Low Side (Hot Oil) Shuttle,
DESCRIPTION
A spring centered, spool-type, closed in neutral, 2-position, 3-way hot oil shuttle valve,
which may be used on hydrostatic transmissions to direct charge pump oil to a heat
exchanger or to tank.
OPERATION
With internal piloting at port ➀, ➁ or ➃, the HS52-43 will direct oil from the port
opposite of the piloted port to port
➂, thus removing oil from the low-pressure side
for cooling or fi ltration purposes. The valve has a spring-centered spool, and is closed
in neutral position.
FEATURES
• Hardened parts for long life.
• Industry common cavity.
RATINGS
Operating Pressure: 345 bar (5000 psi) when used in steel body
Flow Rate: See Performance Chart
Bias Spring Value: 4.1 bar (60 psi)
Internal Leakage: 164 cc/minute (10 cu. in./minute) max. when shifted, and
984 cc/minute (60 cu. in./minute) max. in neutral position at 207 bar (3000 psi)
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
Cavity: VC12-4; See page 9.112.1
Cavity Tool: CT12-4XX; See page 8.600.1
Seal Kit: SK52-4x-TB, See page 8.650.1
USASI/ISO:
SYMBOLS
4.303.1
PERFORMANCE (Cartridge Only)
13.8/200
17.2/250
10.3/150
6.9/100
3.4/50
37.9
10
56.8
15
18.9
5
75.7
20
94.6
25
FLOW lpm/gpm
PRESSURE DROP bar/psi
➁ to ➂ ——; ➃ to ➂ - - - -
32 cSt/150 ssu oil at 40°C
113.6
30
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DIMENSIONS
HS52-43
4.303.2
1.98
50.3
2.00
50.8
4.00
101.6
1.25
31.8
0.38
9.5
3.76
95.5
5.00
127.0
0.19
4.8
3.62
91.9
0.34
8.6
3.09
78.5
1.15
29.2
4.38
111.3
2.12
53.8
INCH
MILLIMETRE
ACROSS
FLATS
TORQUE–
30 ft-lbs
(40.6 Nm)
max.
Cartridge: Weight: 0.15 kg. (0.32 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Polyurethane seals and polyester
elastomer back-ups required for
operation over 207 bar (3000 psi).
Ported Body: Weight: 3.57 kg.
(7.87 lbs.); Ductile Iron (code "D")
standard, rated to 345 bar (5000 psi).
Some body dimensions may differ;
See page 8.012.1
MATERIALS TO ORDER
HS52 - 43 - __ __ __ - __
Porting
Cartridge Only 0
SAE 12 (Ductile) 12TD
SAE 12 (Steel) 12TS
Spring Centered
Seals
N Buna N (Std.)
V Fluorocarbon
P Polyurethane —
required for
operation over 207 bar (3000 psi)
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