DIRECTIONAL VALVES
MP08-41 Manual, Spring Return, Pull-to-Shift
DESCRIPTION
A 4-way, manual, pull-to-shift, spring-return, directional hydraulic cartridge valve.
Series operation is prohibited due to the tank port (
➀) pressure rating.
OPERATION
In its steady-state, spring-offset position, the MP08-41 blocks fl ow in all directions.
In the actuated (pulled) position, the cartridge directs fl ow from
➂ to ➃, and from
➁ to ➀. The spring chamber is vented at ➀.
Note: Pressure at port
➀ will directly act on the spool and spring. Port ➀ is
intended to be a tank port only.
A unique pull-and-rotate feature for holding the positive actuated position is optional.
A 90° rotation is required to position at the hold slot. The valve resets to spring-return
de-actuated with a slight pull and a 90° turn from the locked actuated position.
FEATURES
• Hardened spool and cage for long life.
• Pressure to 14 bar (200 psi) on
➀.
• Optional rotational lock position.
• Compact size.
RATINGS
Operating Pressure:
On
➁, ➂ and ➃: 240 bar (3500 psi)
On
➀ (Max.): 14 bar (200 psi)
Proof Pressure: 350 bar (5075 psi)
Flow: See Performance Chart
Internal Leakage: 82 cc/minute (5 cu. in./minute) max.
Mechanical Pull Effort Required: 7.7 kg. (17 lbs.) installed; 8.6 kg. (19 lbs.)
to travel 3.2 mm (0.125 in.); 7.1 kg. (20 lbs.) to detent
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: VC08-4; See page 9.108.1
Cavity Tool: CT08-4XX; See page 8.600.1
Seal Kit: SK08-4-MMT; See page 8.650.1
USASI/ISO:
SYMBOLS
4.645.1
PERFORMANCE (Cartridge Only)
8.6/125
6.9/100
5.2/75
3.4/50
1.7/25
3.8
1
7.5
2
11.4
3
15.1
4
FLOW lpm/gpm
PRESSURE DROP bar/psi
to , to Loop
32 cSt/150 ssu oil at 40°C
➂➃➁➀
TRANSITION:
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Cartridge: Weight: 0.25 kg. (0.55 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and back-ups
standard. Plastic knob optional.
Standard Ported Body: Weight:
0.18 kg. (0.40 lbs.) Anodized high-
strength 6061 T6 aluminum alloy,
rated to 207 bar (3000 psi). Ductile
iron bodies available; dimensions
may differ. See page 8.008.1.
DIMENSIONS
MATERIALS
TO ORDER
MP08-41 __ - __ __ __ - __
Seals
N Buna N (Std.)
V Fluorocarbon
Option
Threaded Shaft/
Spring Return T
Threaded Shaft/
Lock Position Pin R
Black Plastic Knob/
Spring Return K
Black Plastic Knob/
Lock Position Pin D
Red Plastic Knob/
Spring Return J
Red Plastic Knob/
Lock Position Pin L
MP08-41
4.645.2
Porting
0 Cartridge Only
6T SAE 6
2B 1/4 in. BSP*
3B 3/8 in. BSP*
*BSP Body;
U.K. Mfr. Only
®
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