Comatrol's compact, cost-effective cartridge valves combine easily to form almost any hydraulic circuit. Bringing directional, pressure or flow control to your vehicles' hydraulic systems, they point the way to unlimited design flexibility.
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Free flow is a one-way street with Comatrol reliable check valves for optimal delivery of hydraulic power to your vehicle functions. Comatrol offers flow and pressure capabilities of 3-380 l/min (0.8-100 US gal/min) and up to 350 bar (5,080 psi), respectively.
Available in standard or reverse flow logic. Standard check valves, suitable for most applications, have fully guided poppets which always block. Reverse flow check valves, useful for higher pressure applications or where housing or size constraints require this flow path are also available.
Slip-in style check valves are cartridges that drop into small cavities and are retained by SAE plugs or by other cartridge valves.
Also available are in-line check valves, which can be used to simplify machine plumbing.
Two inputs, one output - Comatrol shuttle valves respond to the pressure signal from the highest bidder, imparting hydraulic logic to your load-sensing system. Comatrol offer flow and pressure capabilities of 4-90 l/min (1-24 US gal/min) and up to 350 bar (5,080 ps), respectively.
Available in cartridge or in-line styles for high application flexibility.
Hot Oil Shuttle
Commonly used in closed-loop hydrostatic propel systems that require oil cooling and filtering.
Relief valves keep hydraulic circuit pressure on an even keel. Comatrol offers flow and pressure capabilities of 1-190 l/min (0.3-50 US gal/min) and up to 415 bar (6,000 psi), respectively.
Direct Acting Relief Valves
Inlet pressure acts on the valve nose, providing pressure relief.
Differential Area Relief Valves
Improved ability to handle higher flows with a lower pressure rise rate compared to direct acting relief valves.
Pilot Operated Relief Valves
Low pressure rise rate for minimum horsepower losses when running at the relief setting for long periods.
Bi-Directional Relief Valves
Commonly used to replace two direct-acting valves, reducing system cost and complexity.
Pressure Reducing Valves
Pressure reduction in part of the circuit with no impact on overall system pressure. Available as pressure reducing/relieving or pressure reducing valves. Comatrol offers flow and pressure capabilities of 1-190 l/min (0.3-50 US gal/min) and up to 415 bar (6,000 psi), respectively.
Pressure Relieving/ Non-Relieving valves
Pressure reducing valves are pressure limiting devices that limit pressure in one portion of a circuit while leaving system pressure unaffected. They are available in direct-acting and pilot-operated types and as pressure reducing/relieving valves or as pressure reducing valves only.
As the name implies, sequence valves control a sequence of operations. Sequence valves usually use a pressure signal to shift a spool, thereby opening or closing a flow path at a pre-set pressure.
Comatrol offers several types of sequence valves: direct-acting, pilot-operated and kick-down.
Another type of sequence valve that is typically used to unload a pump outlet to tank at a minimum pressure drop, resulting in higher system efficiencies with less heat generation.
Flow Control Valves
Pressure compensated flow control valves are used to limit or regulate flow. Three basic types of cartridges are available: restrictive-type, priority-type, and divider/combiner type. Combination valves in manifolds for additional features such as fully adjustable flow or free reverse flow are also available.
Non-compensated manual flow control for an actuator or for bleeding oil from the circuit.
Restrictive Flow Control Pressure-Compensated
Commonly used for meter-in or meter-out circuits to control actuator speeds, for example in load-lowering applications.
Bypass Flow Control Pressure-Compensated
Commonly used to direct fixed flow to a priority function or circuit, while making secondary flow available to other intermittent functions or the tank.
Commonly used for combining (forward) and dividing (reverse) flow to hydraulic wheel motors or synchronizing cylinder motion.
Designed to allow free flow in both directions. If flow exceeds the ‘trip point' in one direction (lowering), the valve shifts to stop or greatly reduce the flow.
Pilot Operated Valves
Your load is secure with Comatrol pilot operated check valves. Designed to keep a hold on loads, these on/off valves only release their grip when a pilot pressure signal is applied to the pilot port. Company offers flow and pressure capabilities of 12-250 l/min (3-66 US gal/min) and up to 350 bar (5,080 psi), respectively.
Integrated design that allows free flow in one direction, blocks flow in the opposite direction, but can be piloted from a third port to open the blocked direction.
Integrated design that allows free flow in one direction, blocks flow in the opposite direction, but can be piloted from a third port to block in both directions.
Comatrol counterbalance valves keep your vehicle's load under smooth control even in the event of a hydraulic failure or leakage. Thanks to their modulated response to pilot pressure signals, these valves always put safety first.
Standard hydraulic vent, where the spring is vented to tank.
Atmospheric vent, where the spring is vented to atmosphere when the tank pressure is high and pressure setting critical.
Intelligent control is in easy reach with PLUS +1 compliant solenoid valves. This electrically-operated range of on-off poppet or spool-type valves is made for your load-holding, blocking or directional control applications.
2-Way, Poppet, Piloted
Two-way "normally open" or "normally closed" valves with free reverse flow option.
2-Way, Poppet, Double Blocking
Typically used as directional controls for single-acting cylinders or unidirectional motors where low-leakage, low-flow load holding is required.
Commonly used for pump unloading and cylinder regeneration.
3-Way, 2-Position, Poppet
Commonly used for control of single-acting cylinder, clutch or brake, circuit selector valve, or pilot for a large directional spool valve where low leakage is a must.
3-Way, 2-Position, Spool
Commonly used for control of single-acting cylinder, clutch, or brake, circuit selector valve, or pilot for a large directional spool valve.
4-Way, 2-Position, Spool
Commonly used for directional control of motors or cylinders. Used in combination to duplicate a four-way, three-position valve, creating an economical, compact and high flow function.
4-Way, 3-Position, Spool
Commonly used for bi-directional control of motors or cylinders, where the valve provides directional electric on/off flow control.
Flow, pressure and directional control is infinitely variable with Comatrol proportional control valves. Each electric input signal sparks a precise response. All proportional control valves have PLUS +1 compliant coils. That makes them directly compatible with PLUS+1 technology for intelligent mobile machine control.
Proportional Directional Valve
Commonly used for bi-directional control of motors or cylinders, where the valve provides directional electro-proportional flow control.
Proportional Pressure Reducing
Three-way valves providing controlled output pressure as a function of electric current, regardless of system pressure or flow (depending on valve limits). Available with or without relieving function.
Proportional Flow Control, Non-Compensated, Spool
Two-way, two-position spool-type valves for delivering non-compensated flow to a machine function (electrically actuated needle valve), available as "normally open" or "normally closed".
Proportional Flow Control, Non-Compensated, Poppet
Two-way, two-position poppet-type valves for delivering non-compensated flow and low leakage load-holding to a machine function, available as "normally open" or "normally closed".
Proportional Flow Control, Compensated, Restrictive 2-Way
Two-ported design providing an infinitely variable flow rate, regardless of load pressure changes in the circuit, available as "normally open" or "normally closed".
Proportional Pressure Relieving Valves
Two-way valves providing relief pressure as a function of electric current. Available as "normally open" (increasing pressure with increasing current) and "normally closed" (decreasing pressure with increasing current).
Proportional Flow Control, Compensated, Priority, 3-way
Three-ported design providing an infinitely variable flow rate to the priority port, regardless of load pressure changes in the circuit. Remaining flow is sent to the third port. Available as "normally open" or "normally closed".
Directional Control Valves
Whether manually or hydraulically actuated, Comatrol directional valves provide the exact directional and flow control your applications require.
Manual Rotary Valve
Available as two-way, three-way and four-way valves, used for flow or direction control.
Two-way manually-actuated valves, poppet-type, "normally closed" and available in push or pull designs.
Available as two-way ("normally open" or "normally closed"), three-way and four-way valves, used for direction control).
The multi-purpose differential sensing valves and pressure compensators in logic elements range are designed to team up with other cartridge valves - creating countless circuits for superb pressure, flow and direction control.
Differential Sensing Valves, Poppet Type
The valve is piloted (or vented) to function as a directional control valve, with low leakage.
Differential Sensing Valves, Spool Type
Three-ported design using a pressure differential across the spool to modulate the flow/pressure from ports, available in "normally open" or "normally closed" with pilot or venting to control the modulation.
Pressure Compensators, Restrictive Type
Three-ported design using a pressure differential across the spool to modulate the flow from ports by maintaining a constant pressure drop across an external orifice (or needle valve).
Pressure Compensators, Priority Type
Four-ported design using a pressure differential across the spool to modulate the flow from ports by maintaining a constant pressure drop across an external orifice (or needle valve).
Load Sense, Priority
Four-ported, static load sense design that provides flow from ports based on the load sense pilot pressure to the load sense port.
Comatrol standard cavities are built to accommodate full range of cartridge valves, with relevant machining tools available for your convenience.
These cavities are designed around SAE standard o-ring thread ports. In many cases these cavities are interchangeable with cavities used by other manufacturers. The table below is intended as a guide for cartridge valve interchanges.
All coils for solenoid and proportional cartridge valves are robust, compact and PLUS +1 compliant.
PLUS +1 Coils
Comatrol offers coils for all valve sizes and in various connector types and voltages. In addition to standard range, Comatrol robust coils are made to tolerate the extremes - whether voltage, temperature or water ingression due to power spray or submersion. And, thanks to the robust coil design, there is no need for o-rings around the coil.
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