FLOW CONTROLS
EC50-40 Pressure Compensator, High Pressure
DESCRIPTION
A screw-in, cartridge-style pressure-compensating element, intended for use with
a remote fi xed or variable orifi ce to yield a three-port (bypass-type), pressure-
compensated, fl ow regulating hydraulic valve for use in high pressure circuits.
OPERATION
The EC50-40 maintains a constant fl ow rate from ➂ regardless of load pressure
changes in the circuit downstream of
➂.
The cartridge maintains a constant differential pressure from circuit point P to
port
➂ (see USASI Symbol), thereby regulating the hydraulic fl ow rate between the
two points in the circuit. The EC50-40 is a priority type regulator, delivering pump
fl ow fi rst to
➂, then bypassing excess to ➁. All ports may be fully pressurized.
FEATURES
• Hardened parts for long life.
• Quiet, modulated response.
• Industry common cavity.
RATINGS
Operating Pressure: 345 bar (5000 psi)
Flow Rate: 38 lpm (10 gpm) max. regulated; 57 lpm (15 gpm) max. input.
EC50-40 inlet pressure begins to rise over compensating pressure
when bypass oil exceeds 26 lpm (7 gpm).
Standard Compensator Bias Spring: 5.5 bar (80 psid)
Flow Maintenance: 0.38 to 1.86 lpm (0.1 to 0.49 gpm) settings ±20%;
1.89 to 5.64 lpm (0.5 to 1.49 gpm) settings ± 15%;
5.68 to 37.85 lpm (1.5 to 10 gpm) settings ±10%
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: VC10-4; See page 9.110.1
Cavity Tool: CT10-4XX; See page 8.600.1
Seal Kit: SK10-4P-TMB; See page 8.650.1
USASI/ISO:
SYMBOLS
PERFORMANCE
(Cartridge Only)
5.446.1
5.1/.200
4.5/.175
3.8/.150
3.2/.125
2.5/.100
ORIFICE DIAMETER mm/inch
Output Flow vs. Orifice Dia.
with 80 psid Spring
32 cSt/150 ssu oil at 40°C
7.5
2
15.1
4
22.7
6
FLOW lpm/gpm
30.2
8
1.9/.075
37.9
10
1.3/.050
0.6/.025
HYDRAFORCE
.com
®
Blue rectangles are links to other catalog pages.
Cartridge: Weight: 0.18 kg. (0.39 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Polyurethane O-rings and
Fluorocarbon 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.
DIMENSIONS
MATERIALS TO ORDER
EC50-40 - __ __ __ - __ - __
Porting
Cartridge Only 0
SAE 6 (Ductile) 6TD
EC50-40
5.446.2
Seals
P Polyurethane (Std.)
Compensator Spring
80 5.5 bar (80 psid) standard
160 11.0 bar (160 psid)
®
HYDRAFORCE
HYDRAFORCE
.com
®
TORQUE:
33 to 37 ft-lbs
(45 to 50 Nm)
Blue rectangles are links to other catalog pages.
