Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of parker ex in China. We warmly welcome you to wholesale bulk parker ex for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Product Overview
▔▔The Parker EX Series is a premium line of high-performance proportional directional control valves designed for demanding electro-hydraulic applications. Engineered to provide exceptional dynamic response, precise fluid metering, and robust control over pressure and flow, the EX Series represents Parker's commitment to cutting-edge hydraulic motion technology.
Key Advantages
▔▔- High-Dynamic Direct-Operated Response: Provides fast step response times (down to 10 ms) and smooth, continuous spool positioning for tight closed-loop control.
- Ultra-Low Hysteresis (< 0.2%): Integrates precise spool feedback and digital electronics to deliver repeatable, fine-tuned flow regulation and position accuracy.
- Hardened Steel Spool and Sleeve Construction: Precision-ground internal components ensure minimal internal leakage, high resistance to mechanical wear, and extended service life.
- Robust ISO Standard Interface: Standardized ISO 4401 subplate mounting patterns (NG06/CETOP 03 and NG10/CETOP 05) allow direct installation and drop-in interchangeability.
- Flexible Control Signal Compatibility: Supports standard analog voltage (±10 V), current loop (4–20 mA), and digital fieldbus communication protocols.
- Durable FKM (Viton) Sealing: Comes standard with fluorocarbon seals, offering high thermal stability and compatibility with mineral oils, synthetic esters, and fire-resistant fluids.
- IP65/IP67 Ruggedized Enclosure: Built with zinc-nickel coated solenoids and moisture-resistant encapsulated coils to withstand demanding industrial environments.
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Technical Specifications
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| Parameter | Unit | Specification / Value |
| Max. Operating Pressure (Port A/B/P) | bar / psi | Up to 350 bar (5075 psi) |
| Max. Tank Line Pressure (Port T) | bar / psi | Up to 210 bar (3045 psi) |
| Nominal Flow Rates (@ Δp = 5 bar/metering edge) | L/min (GPM) |
EX10: 10–40 L/min (2.6–10.5 GPM)
EX16: 50–120 L/min (13.2–31.7 GPM)
EX25: 130–250 L/min (34.3–66.0 GPM) |
| Fluid Temperature Range | °C (°F) | -20°C to +80°C (-4°F to +176°F) |
| Viscosity Range | mm²/s (cSt) | 12 to 380 mm²/s (cSt) |
| Hysteresis | % | < 1.0% (with integrated electronics / LVDT feedback) |
| Repeatability | % | < 0.5% |
| Response Time (Step response 0-100%) | ms | 12 ms to 25 ms (depending on size and drive type) |
| Recommended Filtration | - | ISO 4406 (18/16/13) / NAS 1638 Class 7 |
Configuration Options
▔▔- Valve Size & Structure: Available in cetop/ISO subplate mounting sizes (ISO 4401-03 / Cetop 03 up to ISO 4401-08 / Cetop 08) with direct-operated or pilot-operated proportional spool designs.
- Control Types:
Analog voltage input (0 to 10 V)
Current loop input (4 to 20 mA or +/- 10 mA)
Fieldbus integration (CANopen, PROFIBUS DP, EtherCAT options)
- Feedback Mechanism: High-accuracy linear variable differential transformer (LVDT) position feedback for closed-loop spool position tracking.
- Flow & Spool Options: Standard symmetric (E01, E02) and asymmetric progressive flow characteristics to match specific cylinder speed ratios or motor loads.
- Electrical Configuration: 7-pin or 11-pin main connector options with IP65/IP67 ingress protection rated enclosures.
Key Materials and Components
▔▔
- Hardened Spool and Sleeve Assembly: Manufactured from specialized wear-resistant steel with precision ground surfaces, reducing friction and ensuring long-term resistance to particle erosion.
- FKM (Viton) Fluorocarbon Seals: Standard seal construction provides superior thermal resistance and compatibility with synthetic esters, phosphate esters, and standard mineral oils.
- Corrosion-Protected Solenoid Housing: Coated with a protective anti-corrosion finish to withstand outdoor marine, mobile, or damp factory conditions.
Packaging and Transport Protection
▔▔
- Internal Sealing: All oil ports are sealed with heavy-duty thread plugs or plastic caps to prevent contamination ingress and retain factory test fluid residual coating.
- Desiccant & Vapor Barrier Packaging: Enclosed in anti-static, moisture-proof VCI (Vapor Corrosion Inhibitor) bags with silica gel packets to protect internal electronics and precision metallic surfaces against humidity.
- Shock-Absorbing Foam Cushioning: Fitted inside custom die-cut foam or high-density bubble molds to isolate the valve body and LVDT coil from impact and vibration.
- Bulk Master Shipping Boxes: Individual units are consolidated into heavy-duty corrugated cartons or fumigation-free ISPM-15 compliant wooden cases for safe forklift handling and ocean/air freight shipment.
Applications
▔▔- Plastic Injection Molding Machines: Used in clamp positioning, dynamic mold opening/closing speed profile control, and precise plasticizing back-pressure adjustment.
- Metal Stamping & Forging Presses: Handles rapid position regulation of pressing rams, synchronization of multi-cylinder setups, and precise pressure-ramp transitions.
- Die Casting Machinery: Controls high-speed injection dynamics and smooth deceleration profiles to eliminate shock and flash.
- Industrial Marine & Off-Shore Winches: Regulates hydraulic motor speeds and dynamic braking loads under varying line tensions.
Related Models
▔▔
| Model Number | Nominal Size | Rated Flow (L/min) | Spool Type | Electronics / Feedback | Mounting Standard |
| EX06-A01-020-E | ISO 03 / Cetop 3 | 20 | Progressive Center | Integrated On-Board Electronics (OBE) | ISO 4401-03 |
| EX10-B02-040-E | ISO 05 / Cetop 5 | 40 | Linear Center | On-Board Electronics with LVDT | ISO 4401-05 |
| EX16-C01-100-M | ISO 07 / Cetop 7 | 100 | Asymmetric Flow | External Digital Amplifier Driver | ISO 4401-07 |
| EX25-D01-220-E | ISO 08 / Cetop 8 | 220 | Progressive Center | Integrated On-Board Electronics (OBE) | ISO 4401-08 |
FAQ
▔▔Q1: How do I verify the correct complete ordering code for my existing unit?
A: Please inspect the laser-etched nameplate on the side of the valve body or electronic housing. Provide us with the full model code, serial number, and electronic variant code so we can confirm an exact factory match.
Q2: What cleanliness level and oil filtration accuracy are required for the Parker EX Series?
A: Due to tight internal tolerances between the spool and sleeve, fluid cleanliness must be maintained at ISO 4406 18/16/13 or better. We recommend a fine line filter rating of 10 microns absolute (β10 ≥ 75).
Q3: Which hydraulic fluid types are compatible with the default seal configuration?
A: Standard units come equipped with FKM (Viton) seals, which are compatible with conventional mineral oil-based hydraulic fluids (HLP/HM), synthetic esters (HEES), and flame-resistant fluids (HFD-U).
Contact Us
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