Original SUN LKHC-XDN Cartridge Valve Hydraulic Solenoid Valve
These unbalanced poppet, logic valves are 2-way switching elements that are spring-biased closed. Pressure at either work port 1 or 2 will further bias the valve to the closed position while pressure at port 3 will tend to open it. The force generated at port 3 must be greater than the sum of the forces acting at port 1 and port 2 plus the spring force for the valve to open. NOTE: The pilot area (port 3) is 1.8 times the area at port 1 and 2.25 times the area at port 2.
- Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- These valves have positive seals between port 2 and the pilot area.
- Because these valves are unbalanced, operation is pressure dependent. Opening and closing of the poppet are functions of the force balances on three areas: Port 1 = 100%, Port 2 = 80%, and the Pilot Area = 180%.
- These valves are pressure responsive at all ports, therefore it is essential to consider all aspects of system operation through a complete cycle. Pressure changes at any one port may cause a valve to switch from a closed to an open position, or vice versa. All possible pressure changes in the complete circuit must be considered to assure a safe, functional system design.
- All ports will accept 5000 psi (350 bar).
- Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
- Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
Technical Data
| Cavity |
T-17A |
| Series |
3 |
| Capacity |
60 gpm |
| Maximum Operating Pressure |
5000 psi |
| Maximum Valve Leakage at 110 SUS (24 cSt) |
10 drops/min.@1000 psi |
| Pilot Volume Displacement |
.15 in³ |
| Pilot Passage into Valve |
.06 in. |
| Area Ratio, A3 to A1 |
1.8:1 |
| Area Ratio, A3 to A2 |
2.25:1 |
| Valve Hex Size |
1 1/4 in. |
| Valve Installation Torque |
150 - 160 lbf ft |
| Seal kit - Cartridge |
Buna: 990017007 |
| Seal kit - Cartridge |
EPDM: 990017014 |
| Seal kit - Cartridge |
Polyurethane: 990017002 |
| Seal kit - Cartridge |
Viton: 990017006 |
| Model Weight |
1.14 lb. |
Detailed photos
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