RPE3-063Z11/23050E5 RPE3-063C11/23050E5 PRM2-043Z11/12-24EK Argo-Hytos Hydraulic Valve

Product Overview

The Argo-Hytos RPE3 series solenoid directional valves (RPE3-063Z11/23050E5 and RPE3-063C11/23050E5) and PRM2 series proportional directional valve (PRM2-043Z11/12-24EK) represent over 50 years of German fluid control engineering excellence from Argo-Hytos.

RPE3-063Z11/23050E5 and RPE3-063C11/23050E5 belong to the RPE3-06 series, featuring NG6 (D03) subplate mounting interfaces compliant with ISO 4401, DIN 24340 (CETOP 03), and NFPA-D03 standards. The valves feature a five-chamber cast iron housing with NBR (nitrile rubber) seals, optimized for mineral oil systems. The key distinction between the two models lies in their neutral position spool configuration: 063Z11 offers all ports blocked in neutral for positive shut-off applications, while 063C11 provides P→T open with A and B blocked for pump unloading applications.

PRM2-043Z11/12-24EK is a PRM2-04 series proportional directional valve in NG04 (D02) size. It features a cast iron housing with a specialized control spool, two centering springs, and one to two proportional solenoids, with integrated electronic control board for precise proportional flow control.

Interchangeability Note: All three models strictly conform to international standard interface dimensions (ISO 4401 / DIN 24340), enabling seamless drop-in replacement for original valves on identical mounting surfaces. Every unit undergoes 100% simulated in-service testing to ensure it meets design performance targets immediately upon installation.

Technical Specifications (Bulleted List)

RPE3-063Z11/23050E5

• Brand / Series: Argo-Hytos RPE3-06

• Valve Type: 4/3-way solenoid directional control valve

• Mounting Interface Size: NG6 (D03)

• Mounting Interface Standards: ISO 4401-03, DIN 24340-A6, CETOP R 35 H-03, NFPA-D03

• Max. Operating Pressure: 350 bar (5075 psi)

• Max. Flow Rate: 80 L/min (21.1 GPM)

• Solenoid Voltage: 230 V AC / 50 (60) Hz

• Electrical Connection: DIN plug, EN 175301-803-A

• Spool Configuration (Neutral): All ports blocked (P, A, B, T closed)

• Spool Type: 3-position, 4-way, spring return

• Housing Material: Cast iron

• Seal Material: NBR (nitrile rubber)

• Operating Temperature Range: -30°C to +80°C

• Max. Allowable Viscosity: 500 cSt

• Enclosure Rating: IP65

• Manual Override: Standard, operating pressure 5-10 bar

• Surface Treatment: Housing phosphated, steel parts galvanized (ZnCr-3), ISO 9227 (240h salt spray test)

• Coil Fastening: Retaining nut, 360° rotatable

• Weight: Approx. 2.2 kg (4.85 lbs)

• Country of Origin: Czech Republic

• Approvals: CSA optional

RPE3-063C11/23050E5

• Brand / Series: Argo-Hytos RPE3-06

• Valve Type: 4/3-way solenoid directional control valve

• Mounting Interface Size: NG6 (D03)

• Mounting Interface Standards: ISO 4401-03, DIN 24340-A6, CETOP R 35 H-03, NFPA-D03

• Max. Operating Pressure: 350 bar (5075 psi)

• Max. Flow Rate: 80 L/min (21.1 GPM)

• Solenoid Voltage: 230 V AC / 50 (60) Hz

• Electrical Connection: DIN plug, EN 175301-803-A with integrated rectifier

• Spool Configuration (Neutral): P→T open, A and B blocked

• Spool Type: 3-position, 4-way, spring return

• Housing Material: Cast iron

• Seal Material: NBR (nitrile rubber)

• Operating Temperature Range: -30°C to +80°C

• Max. Allowable Viscosity: 500 cSt

• Enclosure Rating: IP65

• Manual Override: Standard, operating pressure 5-10 bar

• Surface Treatment: Housing phosphated, steel parts galvanized (ZnCr-3), ISO 9227 (240h salt spray test)

• Coil Fastening: Retaining nut, 360° rotatable

• Weight: Approx. 2.2 kg

• Country of Origin: Czech Republic

• Approvals: CSA optional

PRM2-043Z11/12-24EK

• Brand / Series: Argo-Hytos PRM2-04

• Valve Type: 4/3-way proportional directional valve

• Mounting Interface Size: NG04 (D02)

• Max. Operating Pressure: 320 bar (4600 psi)

• Max. Flow Rate: 20 L/min (5 GPM)

• Solenoid Voltage: 12-24 V DC

• Control Method: Proportional solenoid actuation with integrated electronic control board

• Housing Material: Cast iron

• Spool Type: Specialized proportional control spool with two centering springs

• Seal Material: NBR (nitrile rubber)

• Operating Temperature Range: -30°C to +80°C (typical)

• Enclosure Rating: IP65 (typical)

• Corrosion Protection: 240h salt spray test

• Weight: 1.25 kg

• Bolt Height (Mounting): 27 mm

Key Technical Advantages

1. Five-Chamber Housing Design Reduces Viscosity Dependency
The RPE3 series features a unique five-chamber housing design that effectively reduces the valve’s functional dependence on hydraulic fluid viscosity variations. This ensures stable and consistent directional control performance across a wide temperature range and with different oil grades.

2. High Power Density in Compact Package
The RPE3 series delivers exceptional power density—350 bar operating pressure and 80 L/min flow capacity within the compact NG6 (D03) footprint. Optimized flow path design minimizes pressure drop, making these valves ideal for high-pressure, high-flow systems.

3. Modular Design for Maximum Flexibility
Coils are secured with a retaining nut and can be rotated 360° to accommodate tight installation spaces. Interchangeable solenoids (DC/AC) with built-in rectifier bridges for AC models. A wide selection of interchangeable spool types, electrical connector variants, and manual overrides are available.

4. Superior Surface Protection for Demanding Environments
Standard version features phosphated housing and zinc-coated steel parts (ZnCr-3), certified to ISO 9227 240-hour salt spray testing. An enhanced 520-hour protection version is available for mobile applications, ensuring reliable performance in marine, offshore, and construction equipment environments.

5. PRM2 Proportional Valve: Precise Flow Proportional Control
The PRM2-043Z11/12-24EK, as a proportional directional valve, enables stepless proportional flow regulation through the协同 operation of proportional solenoids and an integrated electronic control board. The cast iron housing with specialized control spool and centering springs ensures excellent control accuracy and repeatability at pressures up to 320 bar.

Application Areas

General Application Fields: Industrial hydraulic systems, mobile hydraulic equipment, injection molding machinery, presses, construction equipment, marine hydraulic systems, machine tools and automation equipment, test benches and laboratory equipment.

Expert Maintenance Tips

1. Mounting Orientation and Port Identification
Before installation, verify that the valve mounting surface conforms to ISO 4401 / DIN 24340 standards. Standard port designation: P (pressure), T (tank), A / B (working ports). Tighten mounting bolts to manufacturer-recommended torque (typically M5 × 45-50, torque 8-10 Nm) to avoid housing distortion that could cause spool sticking.

2. Fluid Cleanliness Management
While the RPE3 series allows a maximum viscosity of 500 cSt，for long-term reliable operation of both solenoid and proportional valves, a minimum fluid cleanliness level of ISO 4406 Class 21/18/15 is recommended. PRM2 proportional valves demand higher cleanliness—install high-pressure filters (filtration rating ≤ 10 μm).

3. Electrical Connection Practices
RPE3 series uses DIN plugs conforming to EN 175301-803-A standards. AC models feature built-in rectifier bridges for direct 230 V AC connection. Always verify supply voltage matches coil rating before connection. Coils are 360° rotatable—adjust orientation to suit installation space before tightening the retaining nut.

4. Manual Override Operation
Both RPE3 valves are equipped with standard manual override (push pins) for emergency operation. The manual override can be actuated with 5-10 bar pilot pressure during power failure. This feature is particularly useful during system commissioning and emergencies, but should not be relied upon for continuous operation.

5. Corrosion Protection and Surface Maintenance
Standard surface treatment provides 240 hours of salt spray protection. For high-corrosion environments such as marine or offshore applications, the 520-hour enhanced protection version is recommended, or additional protective covers should be installed. Regularly inspect the valve housing for signs of corrosion and clean accumulated oil residue and salt deposits.

6. PRM2 Proportional Valve Special Considerations
The PRM2 series incorporates integrated electronic control boards. Ensure adequate ventilation around the control box area during installation to prevent overheating. Zero-point and gain adjustments for proportional valves should only be performed by qualified technicians using specialized diagnostic equipment—field adjustments are not recommended.