Sun

Innovative Products

Sun Hydraulics products have been setting the standard for the screw-in hydraulic cartridge valve industry. Sun’s floating cartridge construction and cavity design approach allows products to operate precisely and reliably at higher pressures and flow rates in the most demanding applications. The generous porting area, coupled with our manifold design and construction techniques, result in integrated packages that can be up to 50% smaller than competitive offerings.

Complete Product Line

Sun products are offered in five sizes, with capacity (horsepower) doubling with each successive size. Within each broad functional area (pressure, flow, load control, etc.), multiple variations are available to help you optimize your control circuit. Our expansive product line allows you to develop the best control solution for your hydraulic application.

Pressure Control

Relief Cartridges

Sun Hydraulics offers many different pressure limiting and pressure regulating relief cartridges that can be conveniently applied using many mouting options.

Available in 2-, 3-, and 4-ports
Functionally interchangeable (except pilot only versions) with valves with the same number of ports (same flow path, same cavity for a given frame size)
Five sizes, flow rates up to 200 gpm (800 L/min.)
Versions are available with an integral pilot control cavity that accepts Sun’s T-8A pilot pressure controls – electro-proportional or pneumatic
Fully adjustable up to and including 5000 psi (350 bar) (6000 psi [420 bar] intermittent), except air piloted versions

Reducing Cartridges

Sun Hydraulics reducing cartridges are available in variety of configurations and can be conveniently applied using many mounting options.

Functionally interchangeable with reducing/relieving cartridges (same flow path, same cavity for a given frame size)
Five sizes, flow rates up to 80 gpm (320 L/min.)
Fully adjustable up to and including 4500 psi (315 bar) with inlet pressures up to 5000 psi (350 bar), except air piloted versions

Reducing/Relieving Cartridges

Sun Hydraulics reducing/relieving cartridges are available in different versions and can be conveniently applied using many mounting options.

Functionally interchangeable with one another (same flow path, same cavity for a given frame size)
Five sizes, flow rates up to 80 gpm (320 L/min.)
Fully adjustable up to and including 4500 psi (315 bar) with inlet pressures up to 5000 psi (350 bar) (except air piloted versions)
Reducing/relieving cartridges are offered in both three- and four-port configurations

Sequence Cartridges

Sun Hydraulics` sequence cartridges are similar to relief cartridges except the pilot is separately drained so that valve setting is not affected by pressure in the outlet port. Sun sequence cartridges can be conveniently applied using many mounting options.

Functionally interchangeable with one another (same flow path, same cavity for a given frame size)
Offered in five sizes with flow rates up to 120 gpm (480 L/min.)
Fully adjustable over a wide range of operating pressures up to and including 5000 psi (350 bar) (6000 psi (420 bar) intermittent) (except air piloted versions)

Load Holding

Counterbalance Cartridges

Sun Hydraulics counterbalance cartridges, modulating devices for load holding and motion control, can be directly integrated into your actuator or applied using manifolds with many mounting options.

Offer hose break protection
Prevent loads from drifting
Control overrunning loads
Provide overcenter load control
Protect against pressure due to thermal expansion
Are physically interchangeable with pilot-to-open check cartridges (same number of ports, same cavities, same flow path for a given frame size)

Load Control Cartridges

Sun’s load reactive and non-load reactive, load control valves complement our existing line of motion control products, sharing the same cavities as CB**, CA** and CW** counterbalance valves.

Feature low leakage with excellent modulation characteristics
Available in adjustable and fixed setting versions
Can be installed directly into a cavity machined in an actuator housing

Pilot-to-open Check Cartridges

Sun Hydraulics’ pilot-to-open check cartridges are non-modulating, on-off devices used for holding a load or actuator in position. Sun pilot-to-open check cartridges can be directly integrated into your actuator or applied using manifolds with many mounting options.

Offer protection against hose breaks
Positively lock pressurized loads
Are available in non-vented (3-port) and vented (3- and 4-port) versions
Are physically interchangeable with counterbalance cartridges (same number of ports, same cavities, same flow path for a given frame size).

Flow Control Cartridges

Sun Hydraulics offers 2-, 3- and 4-port flow control cartridges for metering and flow regulation. Sun flow control options include:

Electro-proportional throttle valves
Needle valves with or without free flow check
Fully adjustable needle valves
Pressure compensated valves
3- and 4-port priority flow controls

Directional Cartridges

Sun Hydraulics provides a variety of solenoid and non-solenoid directional control cartridges that include 2-, 3- and 4-way configurations. Sun directional control cartridges can be conveniently applied using many mounting options.

Pilot-operated and direct-acting 2-way and 3-way cartridges that use the same cavity
Six-port pilot operated cartridges
2-, 3- and 4-way solenoid cartridges with an industrial grade solenoid
High-pressure 2-way solenoid operated poppet valves with flow capacities up to 120 gpm (480 L/min.

Electro-Proportional Cartridges

Sun offers a variety of electro-proportionally controlled products, comprised of both direct-acting and pilot operated versions. The direct-acting versions consist of proportional flow control, reducing/relieving and the T-8A pilot stage relief models. This pilot stage relief can be directly integrated into a wide variety of mainstage elements to form the basis of the pilot operated relief and reducing product families.

Solenoid Operated Cartridges

Sun solenoid cartridges are offered in pilot flow, full flow, and high capacity versions. Pilot flows are available in 2-way and 3-way versions. Full flow versions are available in 2-way, 3-way, 4-way and 6-way functions. Our high capacity solenoids are 2-way, normally open or normally closed cartridges with flow from 1 to 2 or 2 to 1. A wide selection of override options are available, along with coil voltages and terminations. Most of our solenoid valves can be fitted with weatherized and explosion proof coils.