DIRECTIONAL VALVES
MP08-34 Manual, Spring Return, Pull-to-Shift
DESCRIPTION
A 3-way, manual, pull-to-shift, spring-return, directional hydraulic cartridge valve.
OPERATION
In its steady-state, spring-offset position, the MP08-34 blocks fl ow from ➁ to ➂.
In the actuated (pulled) position, the cartridge directs fl ow from
➂ to ➁. The spring
chamber is vented at
➀. When released, the valve returns to its steady state.
Note: Pressure at port
➀ will directly act on the spool and spring. Port ➀ is
intended to be a tank port only.
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
➂ to ➁: 240 bar (3500 psi)
Proof Pressure: 350 bar (5075 psi)
Flow: See Performance Chart
Internal Leakage: 33 cc/minute (2 cu. in./minute) max. at 207 bar (3000 psi)
Mechanical Pull Effort Required: 7.3 kg. (17 lbs.) installed; 8.6 kg. (19 lbs.)
to travel 3.2 mm (0.125 in.); 9.1 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: VC08-3; See page 9.108.1
Cavity Tool: CT08-3XX; See page 8.600.1
Seal Kit: SK08-3X-MT; See page 8.650.1
USASI/ISO:
SYMBOLS
4.625.1
PERFORMANCE (Cartridge Only)
17.2/250
13.8/200
10.3/150
6.9/100
3.4/50
22.7
6
30.2
8
37.9
10
15.1
4
7.5
2
FLOW lpm/gpm
PRESSURE DROP bar/psi
to —
32 cSt/150 ssu oil at 40°C
➂➁
Note: This product replaces MP08-36
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MP08-34 __ - __ __ __ - __
Cartridge: Weight: 0.23 kg. (0.50 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-ups standard.
Plastic knob optional.
Standard Ported Body: Weight:
0.27 kg. (0.60 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
Seals
N Buna N (Std.)
V Fluorocarbon
P Polyurethane
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
MP08-34
4.625.2
1.13
28.7
1.50
38.1
1.24
31.4
0.21
5.3
0.78
19.8
0.55
14.0
1/4–20 UNC–2A THD
.094 THRU
FOR ROLLPIN
ATTACHMENT
0.60
15.2
2.12
53.8
2.62
66.5
0.25
6.4
2.00
50.8
0.28
7.1
1.17
29.7
2.36
59.9
1.60
40.6
1.00
25.4
ACROSS FLATS
TORQUE–
20 ft-lbs
(27.1 Nm) max.
MIN.
1.25
31.8
2.50
63.5
INCH
MILLIMETRE
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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