Product Overview
The EP19E2A01M05, EP17E2A01N05, and EP21E2A01N05 are core models in the WINNER EP series of screw-in solenoid operated cartridge valves. WINNER is a renowned Taiwanese manufacturer of hydraulic cartridge valves, with products widely used in construction machinery, mobile vehicles, marine, wind power, offshore engineering, metallurgy, petroleum, machinery manufacturing, and rubber & plastics machinery.
The EP series features 2-way, 2-position poppet-type solenoid directional valves with screw-in cartridge construction for direct manifold installation. These valves deliver extremely low internal leakage (as low as 3 drops/min), making them ideal for leakage-sensitive hydraulic systems.
Model Overview:
EP19E2A01M05: 19E size, 2/2 normally closed poppet-type solenoid valve. When de-energized, flow is allowed from port 1 to port 2, with flow from port 2 to port 1 blocked. When energized, flow is allowed from port 2 to port 1. Flow: 40 L/min.
EP17E2A01N05: 17E size, 2/2 normally closed poppet-type solenoid valve. Flow: 70 L/min.
EP21E2A01N05: 21E size, 2/2 normally closed poppet-type solenoid valve. Flow: 240 L/min.
Model Code Breakdown (using EP19E2A01M05 as an example):
EP: Electromagnetic Cartridge Valve Series
19E: Nominal size / cavity code (19E-2 cavity)
2A: Valve type code
01: Function configuration code
M / N: Seal material code
05: Design/configuration code
As original WINNER screw-in cartridge valves, these products offer complete interchangeability within the same series and cavity, requiring no modifications to manifold designs.
Technical Specifications
EP19E2A01M05 Specifications:
Model: EP19E2A01M05
Brand: WINNER (Taiwan)
Product Type: 2/2 Solenoid Cartridge Valve
Valve Type: Poppet Type
Normal Position: Normally Closed
Cavity: 19E-2
Maximum Operating Pressure: 350 bar (5000 psi)
Maximum Flow Rate: 40 L/min (10.57 gpm)
Maximum Leakage: Approx. 0.15 cc/min (3 drops/min) @ 210 bar
Valve Hex Size: 24 mm (15/16 in.)
Installation Torque: 39–51 N·m (29–38 lbf·ft)
Locknut Torque: 2–3 N·m (1.5–2 lbf·ft)
Coil Type: EC-04W
Power Consumption: 20 W
Supply Voltage: 24V DC (90% of nominal)
Protection Class: IP65
Salt Spray Test: >1000 hours (WINNERcoat® Zinc-Nickel Plating)
Mounting Position: Unrestricted
Weight: 0.13 kg (0.29 lb)
EP17E2A01N05 Specifications:
Model: EP17E2A01N05
Brand: WINNER (Taiwan)
Product Type: 2/2 Solenoid Cartridge Valve
Valve Type: Poppet Type
Normal Position: Normally Closed
Cavity: 17E-2
Maximum Operating Pressure: 350 bar (5000 psi)
Maximum Flow Rate: 70 L/min
Weight: Approx. 0.30–0.40 kg
EP21E2A01N05 Specifications:
Model: EP21E2A01N05
Brand: WINNER (Taiwan)
Product Type: 2/2 Solenoid Cartridge Valve
Valve Type: Poppet Type
Normal Position: Normally Closed
Cavity: 21E-2
Maximum Operating Pressure: 350 bar (5000 psi)
Maximum Flow Rate: 240 L/min
Weight: 0.46 kg
EP Series Common Specifications:
Brand: WINNER (Taiwan)
Series: EP Series
Body Material: High-strength carbon steel
Surface Treatment: WINNERcoat® Zinc-Nickel Plating, salt spray >1000 hours
Working Parts: Heat-treated and high-precision ground
Seal Material: Multiple seal kit options available
Pressure Test Standard: NFPA T2.6.1, fatigue rating “90/90”
Factory Testing: 100% functional test guaranteed
Solenoid Type: Wet-Armature
Key Technical Advantages
1. Poppet-Type Leakage-Free Design — Extremely Low Internal Leakage
The EP series features poppet-type spool construction, achieving metal-to-metal sealing against the seat in the closed position. Unlike spool-type valves, the poppet design delivers extremely low internal leakage in the closed state, with maximum leakage of only 3 drops/min (0.15 cc/min) . This makes it ideal for high-pressure hydraulic systems requiring long-term actuator position holding with minimal leakage.
2. Wet-Type Solenoid Design for Quiet, Long-Life Operation
Features a wet-armature solenoid construction—the movable iron core operates fully submerged in hydraulic oil. The hydraulic oil lubricates moving parts to reduce wear and cushions switching impact and vibration. This ensures extended service life and extremely low noise levels. Coils are continuous-duty rated and can be replaced without opening the hydraulic system.
3. 350 bar High Pressure with Broad Flow Coverage
Delivers 350 bar (5000 psi) maximum operating pressure in a compact cartridge package. Flow coverage ranges from 40 L/min (EP19E) to 70 L/min (EP17E) to 240 L/min (EP21E) , accommodating diverse hydraulic system requirements from small to ultra-large flow applications.
4. Heat-Treated and Precision-Ground Poppet for Superior Wear Resistance
Critical control elements are heat-treated and high-precision ground, significantly increasing surface hardness and reducing wear. This ensures long-term sealing performance with extremely low internal leakage, substantially extending valve service life.
5. WINNERcoat® Zinc-Nickel Plating for Superior Corrosion Resistance
All exposed surfaces feature WINNERcoat® Zinc-Nickel Plating, with salt spray testing per DIN EN ISO 9227 exceeding 1000 hours. This excellent corrosion resistance makes it particularly suitable for offshore engineering, marine, mining, and other humid/corrosive environments.
6. International Standard Compliance with 100% Functional Testing
Winner cartridge valves are pressure-rated per NFPA T2.6.1 standards, with fatigue rating assurance/verification level of “90/90” . All products undergo 100% functional testing before shipment.
Application Areas
Injection Molding Machinery — Directional control and flow switching for injection molding machines
Construction Machinery — Hydraulic system control for excavators, loaders, and mobile equipment
Mobile Vehicles — Directional and flow control for vehicle hydraulic systems
Marine and Offshore Engineering — Shipboard hydraulic systems and offshore platform control
Wind Power Equipment — Pitch control and braking system hydraulics for wind turbines
Metallurgical Equipment — Directional control for rolling mills and heavy-duty hydraulic systems
Rubber and Plastics Machinery — Hydraulic control for rubber and plastics processing equipment
High-Pressure Hydraulic Systems — Various industrial applications requiring ultra-low leakage and high-pressure control
Expert Maintenance Tips
1. Installation Guidelines
EP19E2A01M05 fits 19E-2 cavity. EP17E2A01N05 fits 17E-2 cavity. EP21E2A01N05 fits 21E-2 cavity. Verify cavity size compatibility before installation.
Thoroughly clean the cavity and valve exterior before installation to prevent foreign particles from entering and causing seal damage or spool sticking.
Recommended installation torque: 39–51 N·m (29–38 lbf·ft) . Reduce torque for aluminum manifolds to prevent thread damage.
No orientation restrictions—any installation orientation is acceptable.
2. Hydraulic Fluid Cleanliness
Recommended fluid cleanliness: ISO 4406 21/19/16 or better.
Use standard mineral-based or synthetic hydraulic fluids.
Some EP models feature a 50 mesh (Ø 0.3 mm) filter to protect the spool from contamination.
3. Electrical Connection Specifications
EP19E2A01M05 uses 24V DC supply with power consumption of 20 W.
Coils are continuous-duty rated.
Ensure electrical connector is fully locked to maintain IP65 protection.
4. Seal Material Selection
5. Periodic Maintenance Inspection
Inspect the valve body for external oil leakage every 2,000 operating hours or at least annually.
Check electrical connectors for looseness, oxidation, or moisture ingress.
If response lag or unstable shifting is observed, first check system fluid cleanliness and poppet seal condition.
The EP series poppet design features extremely low internal leakage—if abnormal leakage increase is observed, inspect the valve seat sealing surface for damage.
