DIRECTIONAL VALVES
LS10-40 Load Shuttle Network
DESCRIPTION
A cartridge-style check valve network for use in hydraulic load-sense circuits.
OPERATION
The LS10-40 will compare pressures from three circuits to provide a pressure signal
from the highest pressure circuit, while blocking the other circuits.
The valve will allow fl ow from the highest pressure port (
➃, ➂ or ➁) to port ➀.
FEATURES
• Industry common cavity.
• Hardened seat for long life and low leakage.
RATINGS
Operating Pressure: 240 bar (3500 psi)
Flow: 1.89 lpm (0.5 gpm); See performance chart
Internal Leakage: 0.15 ml/minute (2 drops/minute) at 240 bar (3500 psi)
Temperature: –40 to 120°C with standard Buna 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-X-X; See page 8.600.1
Seal Kit: SK10-4X-MMM; See page 8.650.1
USASI/ISO:
SYMBOLS
4.280.1
PERFORMANCE (Cartridge Only)
1.03/15
0.69/10
0.34/5
0.38
0.10
1.51
0.40
FLOW lpm/gpm
PRESSURE DROP bar/psi
32 cSt/150 sus oil at 40°C
1.89
0.50
1.38/20
1.72/25
2.07/30
2.41/35
2.76/40
0.76
0.20
1.14
0.30
➂ to ➀
➃
to ➀
➁
to ➀
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LS10-40 - __ - __ __
Cartridge: Weight: 0.12 kg. (0.26 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-ups standard.
Standard Ported Body: Weight:
0.34 kg. (0.75 lbs.) Anodized high-
strength 6061 T6 aluminum alloy,
rated to 207 bar (3000 psi). Ductile
iron bodies available; dimensions
may differ. See page 8.010.1
DIMENSIONS
MATERIALS TO ORDER
Porting
Cartridge Only 0
SAE 6 6T
SAE 8 8T
1/4 in. BSP* 2B
3/8 in. BSP* 3B
*BSP Body;
U.K. Mfr. Only
LS10-40
4.280.2
Seals
N Buna N (Std.)
V Fluorocarbon
P Polyurethane
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