Name: China Pilot-Operated Hydraulic Proportional Valve 4WRZE25 A1 10V Control Manufacturers - Bokin
Brand: Bokin
SKU: 296421452

Bokin Electro-Hydraulic Technology (Foshan) Co., Ltd. is one of the leading manufacturers and suppliers of pilot-operated hydraulic proportional valve 4wrze25 a1 10v control in China. If you're going to wholesale bulk durable pilot-operated hydraulic proportional valve 4wrze25 a1 10v control made in China, welcome to get pricelist from our factory. All customized products are with high quality and competitive price.

Product Parameters

▶ Size 25

▶ Component series 7X

▶ Maximum operating pressure 350 bar

▶ Rated flow 220/325 L/min(Δp=5 bar per control edge)

Features

▶ 4/2 and 4/3-way version

▶ For subplate mounting

▶ Porting pattern according to ISO 4401-08-08-0-05

▶ Control of flow direction and size

▶ Operation by means of proportional solenoids with central thread and detachable coil

▶ Spring-centered control spool

▶ On-board electronics (OBE) with A1 interface (command value input ±10 V)

▶ Optional concealed manual override (N9, not available for seawater-resistant "J" version)

▶ CE conformity according to EMC Directive 2014/30/EU

Pilot-Operated Hydraulic Proportional Valve 4WRZE25 A1 10V Control Complete Model

4WRZE 25 E220-7X/ 6EG24N9K31/A1M

4WRZE 25 E220-7X/ 6EG24N9EK31/A1M

4WRZE 25 E220-7X/ 6EG24N9TK31/A1M

4WRZE 25 E220-7X/ 6EG24N9ETK31/A1M

4WRZE 25 E350-7X/ 6EG24N9K31/A1M

4WRZE 25 E350-7X/ 6EG24N9EK31/A1M

4WRZE 25 E350-7X/ 6EG24N9TK31/A1M

4WRZE 25 E350-7X/ 6EG24N9ETK31/A1M

Technical Specifications

Available Size	4WRZE10	4WRZE16	4WRZE25	4WRZE32
Nominal Flow	25/50/85(L/min)	125/180(L/min)	220/325(L/min)	360/520(L/min)
Control Spools	E, E1, W6, W8, EA, etc
Pilot Oil Control Mode	No code, E, T, ET
Electrical connection	K31
Electrical interface	A1, F1
Pressure Reducing Valve D3	Can be installed as required
Sealing Material	M (NBR), V (FKM)
For other models	Please consult us

Product Advantages

Core Positioning

Heavy-duty pilot-operated proportional valve with 10V analog control and integrated OBE, built for mid-range high-flow hydraulic systems. Combines robust construction, precise flow regulation, and high-pressure resistance, ideal for heavy machinery and industrial power units.

10V Control Precision & OBE Advanced Features

A1 interface with ±10V command input (input resistance >100 kΩ) and differential amplifier for noise reduction. OBE includes adjustable ramp generator (0–2.5 s) and interlocking function, preventing conflicting solenoid commands. Hysteresis <6% and temperature-compensated electronics ensure consistent performance across -20~+50°C.

Flow & Pressure Capabilities

Rated flow 220–325 l/min (Δp=5 bar), maximum flow 870 l/min. Main valve ports A/B/P rated 350 bar, pilot supply 100 bar (internal), external return 250 bar. Pilot flow 7 l/min ensures rapid spool actuation, while pressure-compensated main stage maintains flow stability under dynamic loads.

Structural & Installation Details

Weighs 19.0 kg, ISO 4401-08-08-0-05 porting pattern. Requires 6 M12 x 60 fixing screws (100–130 Nm tightening torque). 7-pole K31 connector with LiYCY 7×1.0 mm² cable (up to 40 m) – EMC-compliant installation with metal mating connector and double-ended shielding.

Fluid Compatibility & Reliability

Compatible with mineral oils (HL/HLP), biodegradable HEES, and flame-resistant HFDU (FKM seals). Viscosity range 20–380 mm²/s, hydraulic fluid temperature -20~+80°C. IP65 protection and 150°C maximum surface temperature tolerance enhance durability in harsh industrial environments.

Safety & Operational Resilience

Spring-centered main spool for fail-safe neutral position. Optional manual override (N9) enables emergency operation. Throttle inserts (Ø2.8 mm) in pilot control valve optimize flow dynamics, reducing pressure pulsation. ISO 4406 18/16/13 fluid cleanliness requirement extends service life.

Industry Application Fit

Designed for large hydraulic presses, heavy material handling equipment, and industrial power units. Excels in steel mill hydraulics, plastic extrusion machines, and mining equipment where 10V precision control and high flow capacity are critical.