Purchase now: Winner ES-08W-2H-14-Z-04 Cartridge Valve
Purchase now: Atlantech Drives provides you the Winner Hydraulics ES-08W-2H-14-Z-04, a specialized Solenoid Spool Valve configured as Normally Open (NO). The «2H» code in the Winner catalog signifies the Normally Open logic (Flow passes from Port 1 to 2 when *not* energized). This valve is equipped with a 12V DC Coil («04»), making it perfect for mobile equipment, dump trucks, and 12V battery-powered hydraulic power packs.
Technical Specifications and Failsafe Logic
The «Normally Open» function is critical for Failsafe Applications. For example, in a cooling fan circuit, you want the fan to run (valve open) if the control system fails or loses power to prevent engine overheating. Alternatively, it is used for «Unloading» a pump—allowing oil to go back to the tank freely until the solenoid is energized to build pressure. The cartridge fits the standard Size 08 cavity and features a balanced spool design for consistent shifting regardless of pressure.
- Part Number: ES-08W-2H-14-Z-04.
- Logic: Normally Open (NO).
- Type: Spool Valve (Allows flow when off).
- Voltage: 12V DC.
- Cavity: C-08-2.
- Flow Capacity: ~23 LPM.
- Pressure: 350 Bar.
- Connection: Spade / Leads (Type 14).
- Application: Pump Unloading, Fan Drive, Failsafe.
Expert Maintenance Tips: Solenoid Heat
Watch the duty cycle. Expert Tip: In a Normally Open valve used for «Unloading», the coil might be energized for long periods to keep the system pressurized (closed). 12V coils can get very hot (up to 100°C is normal). Ensure the valve is not mounted next to heat-sensitive components like plastic airlines or wiring looms. If the coil burns out, this valve will revert to its «Open» state, dumping system pressure to the tank.
Frequently Asked Questions (FAQs)
Q: How do I test if it’s working?
A: With the engine off and no power, blow air through Port 1. It should come out Port 2 (Open). Apply 12V; the air should stop (Closed). If air passes when energized, the spool is stuck or the coil is bad.
Q: Can I replace the coil only?
A: Yes, the coil is removable via the top nut. Ensure you replace it with a genuine Winner 12V coil of the correct size to fit the tube diameter.
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