FLOW CONTROLS
EC42-M43 Pressure Compensator
DESCRIPTION
A screw-in, cartridge-style priority-on-demand pressure-compensator with dynamic
load sense.
OPERATION
The EC42-M43 provides priority fl ow in the required amount, while allowing excess
fl ow to be used for auxiliary functions. With port
➂ providing inlet fl ow, port ➃ will
deliver the required priority fl ow regardless of load pressure. Excess fl ow exits at
➁.
Port
➀ is the load sense port. All ports may be fully pressurized.
NOTE: 0.031 in. (0.79 mm) orifi ce is recommended to be installed in the load sense
line at port
➀ for better stability.
FEATURES
• Hardened parts for long life.
• Quiet, modulated response.
• Industry common cavity.
RATINGS
Operating Pressure: 241 bar (3500 psi)
Maximum Input Flow: 303 lpm (80.0 gpm)
Maximum Priority Flow: 208 lpm (55.0 gpm) with 10.3 bar (150 psi) spring;
151 lpm (40.0 gpm) with 5.5 bar (80 psi) spring
Maximum Bypass Flow: 208 lpm (55.0 gpm) with 10.3 bar (150 psi) spring;
151 lpm (40.0 gpm) with 5.5 bar (80 psi) spring
Flow Maintenance: see performance chart
Temperature: -40 to 120°C with Buna N 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: VC42-M4; See page 9.142.1
Cavity Tool: CT42-M4XX; See page 8.600.1
Seal Kit: SK42-4X-MMM; See page 8.650.1
USASI/ISO:
SYMBOLS
PERFORMANCE
(Cartridge Only)
5.498.1
Pressure Drop thru Bypass vs. Inlet Flow
with ➃ closed; no load at ➁
0.031 in. (0.79 mm) Orifice
in Load Sense Line
32 cSt/150 sus oil at 40°C
13.8/200
17.2/250
10.3/150
6.9/100
3.4/50
37.9
10
75.7
20
151.4
40
189.3
50
INLET FLOW lpm/gpm
PRESSURE DROP bar/psi
227.1
60
113.6
30
150 psi Spring
80 psi Spring
Body & Line
3
2
1
4
Priority Flow vs. Pressure
at 3500 psi (241 bar), 60 gpm (227 lpm) Inlet
0.031 in. (0.79 mm) Orifice in Load Sense Line
150 psi Spring: ——; 80 psi Spring: - - - -
32 cSt/150 sus oil at 40°C
151.4/40
189.3/50
227.1/60
113.5/30
75.7/20
37.9/10
69
1000
138
2000
207
3000
276
4000
0 138
2000
207
3000
PRESSURE
bar/psi
Bypass > Priority Priority > Bypass
FLOW lpm/gpm
276
4000
69
1000
HYDRAFORCE
.com
®
Note: This valve, the EC42-M43, replaces the older EC42-M41 functionally,
although the two valves have different port logic. We will continue to provide
the EC42-M41 for existing customers, but recommend conversion to the new
EC42-M43 for new designs. For more information consult factory.
Blue rectangles are links to other catalog pages.
Cartridge: Weight: 1.56 kg. (3.44 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-ups standard.
Standard Ported Body: Weight:
2.8 kg. (6.2 lbs.) Anodized high-
strength 6061 T6 aluminum alloy,
rated to 207 bar (3000 psi). Ductile
iron bodies available; dimensions
may differ. See page 8.042.1
DIMENSIONS
MATERIALS TO ORDER
EC42-M43 - __ __ __ - __ - __ __ __
Porting
Cartridge Only 0
SAE 12 12T
SAE 16 16T
SAE 20 20T
EC42-M43
5.498.2
Seals
N Buna N (Std.)
V Fluorocarbon
Bias Spring
80 5.5 bar (80 psid)
150 10.3 bar (150 psid)
2.93
74.4
1.97
50.0
4.00
101.6
3.19
81.0
4.79
3
121.5
INCH
MILLIMETRE
2
1
1
4
1.88
ACROSS
M42 x 2.0
- 6g THREAD
FLATS
TORQUE -
65–75 ft-lbs
(88–102 Nm)
47.6
3
2
4
6.00
152.4
5.38
136.7
2.64
67.1
0.25
6.4
3.50
88.9
0.34
8.6
1.34
34.0
3.94
100.1
®
HYDRAFORCE
HYDRAFORCE
.com
®
Blue rectangles are links to other catalog pages.
