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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

4 year

Product details

Features

Model ZY08 with middle-high pressure monoblock 7 spools

construction is an independently developed control valves by our company.

-Inner check valve: The check valve inside the valve body is to insure the hydraulic oil not to be

returned.

-Inner relief valve: The relief valve inside the valve body is able to adjust the hydraulic system working

pressure.

-Oil way: Parallel circuit, with power beyond.

Control Way: Manual control

Valve construction: monoblock construction, 7 levers.

Spool Function: O,A,Y P.

The type valve is specially used on wood grabbing machines.

duced by our company include parker series/Rexroth series/YUKEN series/Tokyo Keiki series/Fujikoshi series/Eaton Vickers series, solenoid valve reversing valve/proportional valve/pressure valve/logic valve/servo valve/hydraulic valve Manifold.

Check valves: Z1S 6 | Z1S 10 | Z1S 16 | Z1S 22 | Z1SRA | S6 - S30 | S52 - S150 | M-SR 6-30 | M-SR 52-150

Check valves, pilot to close: Z2S6 | Z2S10 | Z2S16 | Z2S22 | Z2S32

Check valves, pilot operated: SV6 | SV10 | SV15 | SV20 | SV25 | SV30 | SL6 | SL10 | SL15 | SL20 | SL25 | SL30

Shut-off valves, 4/2 and 4/3 directional isolator valves: Z4WE6 | Z4W(E)H10-4X | Z4W(E)H16 | Z4W(E)H22

Pre-fill valves: ZSF | ZSFW | SF | SFA | SFE | SFS

Directional valves control the flow and direction of movement or rotation of hydraulic actuators. These Rexroth hydraulic valves include their directional seat or spool valves (either direct- or pilot operated):

1. Product Overview

TheZP80 Series Monoblock Directional Control Valveis a highly integrated, compact hydraulic control component designed for medium-duty hydraulic systems in construction machinery, agricultural equipment, and industrial applications. Featuring a single-piece aluminum cast valve body, it combines directional control, pressure compensation, and flow regulation functions, minimizing external piping and leakage risks.

Key Features:

• Monoblock Design: Single-piece aluminum casting (ADC12) with anodized finish for corrosion resistance.

• High Flow Capacity: Up to80 L/min (21 GPM)for efficient power transmission.

• Versatile Control: Manual, solenoid, or hydraulic pilot operation options.

• Pressure Rating:315 bar (4,570 psi)maximum operating pressure.

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2. Structure & Functions

2.1 Valve Body Design

• Material: High-strength aluminum alloy (ADC12) with anodized surface treatment.

• Oil Passages: Internal integrated flow channels reduce external piping and pressure drop.

• Mounting: Flange or subplate mounting compatible withISO 4401ports.

2.2 Spool Types

【表格】

Type Function Applications

3/4 Position Neutral closed/tank/pressure-holding configurations Excavator boom, loader work device

2/4 Position Single-direction locking or bidirectional switching Agricultural hydraulic motor control

Pressure-Comp. Maintains constant actuator speed under load variations Die-casting mold clamping, injection molding

2.3 Control Modes

• Manual: Lever or knob operation for fixed-position control.

• Solenoid:

• Wet-Type: Coil immersed in oil for heat dissipation (recommended for continuous duty).

• Dry-Type: External coil for explosion-proof or clean environments.

• Pilot-Operated: External hydraulic signals drive spool movement for remote or high-flow systems.

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3. Technical Specifications

【表格】

Parameter Value Notes

Rated Pressure 315 bar (4,570 psi) Short-term peak: 350 bar (valve material limit).

Max Flow 80 L/min (21 GPM) Depends on port size (e.g., NG10).

Leakage Class ISO 1219-1 Class V (internal) Suitable for precision equipment (e.g., CNC machines).

Operating Temp -20°C ~ +80°C (-4°F ~ +176°F) Use fluororubber seals for high-temp environments.

Response Time Solenoid: <15ms; Pilot: <30ms Depends on control signal strength.

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4. Typical Applications

4.1 Construction Machinery

• Excavators: Controls boom lift, arm extension, and swing motor directions.

• Loaders: Manages work device lift, tilt, and steering hydraulic circuits.

4.2 Agricultural Machinery

• Combine Harvesters: Adjusts header lift and threshing drum speed.

• Tractors: Controls rear suspension lift/lower and PTO hydraulic output.

4.3 Industrial Equipment

• Die-Casting Machines: Enables fast mold closing and slow injection hydraulic switching.

• Bending Machines: Synchronizes ram descent speed and parallelism.

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5. Selection Guide

5.1 Define Control Requirements

• Actuator Count: Select spool positions based on the number of actuators (e.g., 3/4 for double-acting cylinders).

• Control Precision: Use proportional valves for speed regulation (e.g., injection molding).

5.2 Match System Parameters

• Pressure Matching: Valve rated pressure must exceed system max. pressure by 20%.

• Flow Matching: Select port size based on pump flow (e.g., NG6 for 60 L/min).

5.3 Environmental Adaptability

• Vibration/Shock: Use vibration-resistant valves with shock mounts.

• Protection Rating: IP65 required for outdoor equipment.

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6. Common Faults & Solutions

【表格】

Fault Causes Solutions

Spool Sticking Oil contamination, spool wear Clean valve body, replace filter; replace spool.

Excessive Leakage Seal aging, valve body scratches Replace O-rings/seals; professional valve body repair required.

Solenoid Inaction Coil burnout, low voltage, stuck spool Measure coil resistance; check voltage; manually push spool.

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7. Technical Support & Services

• Online Configurator: Input pressure, flow, and motion requirements for model recommendations.

• Document Download: Access product catalogs, CAD models, and performance curves.

• Local Service: Contact authorized distributors for on-site commissioning or repairs.