DIRECTIONAL CONTROLS
HS50-43 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 HS50-43 will direct oil from the port op-
posite 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 spool and cage 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: 541 ml/minute (33 cu. in./minute) max. at 345 bar (5000 psi)
Temperature: -40 to 120°C with standard polyurethane 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: VC10-4; See page 9.110.1
Cavity Tool: CT10-4XX; See page 8.600.1
Seal Kit: SK10-4X-MMM, See page 8.650.1
USASI/ISO:
SYMBOLS
4.302.1
PERFORMANCE (Cartridge Only)
13.8/200
17.2/250
10.3/150
6.9/100
3.4/50
15.1
4
22.7
6
7.6
2
30.3
8
37.9
10
FLOW lpm/gpm
PRESSURE DROP bar/psi
➁ to ➂ and ➃ to ➂
32 cSt/150 sus oil at 40°C
45.4
12
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DIMENSIONS
HS50-43
4.302.1
TORQUE
24–26 ft-lbs
(32.5–35.3 Nm)
Cartridge: Weight: 0.12 kg. (0.27 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Polyurethane seals and polyester
elastomer back-ups standard.
Ported Body: Weight: 0.68 kg.
(1.51 lbs.); Ductile Iron (code "D")
standard, consult factory for weight,
dimensions may differ. Rated to
345 bar (5000 psi).
See page 8.010.1.
MATERIALS TO ORDER
HS50-43 - __ __ __ - P
Seals
P Polyurethane
Porting
Cartridge Only 0
SAE 6 (Ductile) 6TD
SAE 6 (Steel) 6TS
Spring Centered
®
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