Product Overview

The DS3-SA1/10N-A230K1 is a Duplomatic Motion Solutions DS3 direct-operated solenoid directional control valve designed for reliable hydraulic flow-direction switching and actuator control.

Duplomatic officially defines the DS3 as a solenoid actuated directional valve, direct operated, with a subplate mounting interface according to ISO 4401-03 / CETOP 03. The valve is available in multiple 3-way and 4-way, 2-position and 3-position spool configurations. Its valve body is manufactured from high-strength cast iron with large internal flow passages, while the solenoid system uses a wet-armature design with interchangeable coils.

The specified model is:

DS3-SA1/10N-A230K1

The ordering-code structure identifies:

• DS3: Direct-operated solenoid directional valve
• SA1: One solenoid on side A, two positions, spring return
• 10N: Series 10 with NBR sealing
• A230: 230 VAC / 50 Hz or 240 VAC / 60 Hz
• K1: EN 175301-803 / DIN 43650-style electrical connection
• N: NBR seals for mineral-oil hydraulic fluids

For replacement applications, accurate matching should include the spool function, mounting interface, AC voltage, frequency, connector configuration and seal material.

Our replacement solutions emphasize in-situ interchangeability and 100% simulated operating-condition testing.

Technical Specifications

DS3-SA1/10N-A230K1

• Manufacturer: Duplomatic Motion Solutions
• Series: DS3
• Full Model: DS3-SA1/10N-A230K1
• Product Type: Direct-operated solenoid directional control valve
• Mounting: Subplate mounting
• Mounting Standard: ISO 4401-03
• Interface: CETOP 4.2-4-03-350
• Spool Configuration: SA1
• Actuation: Single solenoid, side A
• Positions: 2
• Return: Spring return
• Series Number: 10
• Seal Material: NBR
• Supply Voltage: 230 VAC / 50 Hz; 240 VAC / 60 Hz
• Electrical Connection: K1, EN 175301-803 / DIN 43650
• Maximum Pressure, P/A/B: 350 bar
• Maximum Pressure, T, AC version: 160 bar
• Maximum Flow: 100 L/min
• Ambient Temperature: -20°C to +50°C
• Fluid Temperature: -20°C to +80°C
• Fluid Viscosity: 10–400 cSt
• Recommended Viscosity: 25 cSt
• Fluid Cleanliness: ISO 4406:1999 Class 20/18/15
• Duty Cycle: 100%
• Maximum Switching Frequency: 18,000 operations/hour
• Approximate Weight, Single AC Solenoid: 1.4 kg
• Displacement: Not applicable
• Maximum Rotational Speed: Not applicable

A230K1 Electrical Data

• Rated Voltage: 230 V / 50 Hz; 240 V / 60 Hz
• Coil Resistance: 135 Ω at the 230 V / 50 Hz condition
• Inrush Current: 0.92 A at 230 V / 50 Hz
• Holding Current: 0.21 A at 230 V / 50 Hz
• Inrush Power: 213 VA
• Holding Power: 48 VA
• 240 V / 60 Hz values: 0.79 A inrush, 0.18 A holding, 190 VA inrush and 43 VA holding

Key Technical Advantages

1. Direct-Acting Solenoid Architecture

The DS3 uses direct solenoid actuation of the hydraulic spool.

This provides a straightforward directional-control architecture without a separate pilot stage, making the valve suitable for standard industrial hydraulic circuits.

2. 350 Bar Hydraulic Pressure Capability

The DS3 platform is specified for a maximum pressure of 350 bar at the P, A and B ports.

For the specified AC version, however, the maximum allowable T-port pressure is 160 bar, which must be considered separately during system design.

3. Up to 100 L/min Flow

Duplomatic specifies a maximum DS3 flow capability of 100 L/min. Actual pressure drop depends on the spool configuration, flow direction and operating conditions.

4. High-Strength Cast-Iron Valve Body

The valve body uses high-strength cast iron and large internal flow passages designed to minimize pressure drop.

This design supports mechanical robustness while reducing hydraulic losses and unnecessary heat generation.

5. Wet-Armature Solenoid Design

The solenoid assembly uses a wet-armature configuration in which the armature operates in oil and benefits from heat transfer through the hydraulic circuit.

6. Interchangeable Coils

The DS3 uses interchangeable coils, allowing electrical maintenance to be performed separately from the hydraulic valve body.

This is particularly useful for aftermarket service and spare-parts management.

7. SA1 Spring-Return Spool

The SA configuration is defined by Duplomatic as one solenoid on side A, two positions and spring return.

When the solenoid is de-energized, the spring returns the spool to its defined position.

8. Standard ISO 4401-03 Interface

The ISO 4401-03 mounting interface makes the DS3 suitable for standard CETOP 03 hydraulic manifolds, subplates and modular hydraulic assemblies.

Application Areas

Typical DS3-SA1 applications include:

• Industrial hydraulic power units
• Machine tools
• Hydraulic clamping systems
• Injection molding machinery
• Hydraulic presses
• Material-handling equipment
• Automated production machinery
• Hydraulic cylinder control
• Hydraulic motor start/stop circuits
• Industrial auxiliary hydraulic circuits
• Mobile machinery auxiliary hydraulics

The 230 VAC / K1 configuration is particularly suitable for industrial control cabinets and hydraulic systems using conventional AC control circuits.

Expert Maintenance Tips

1. Verify Voltage and Frequency

The A230 configuration is an AC coil rated at 230 V / 50 Hz or 240 V / 60 Hz. It should not be treated as a DC230V valve.

2. Keep AC T-Port Pressure Below 160 Bar

For the AC configuration, the DS3 technical documentation specifies a maximum T-port pressure of 160 bar, while P/A/B may operate up to 350 bar.

Return-line restrictions, blocked filters and common return pressure should therefore be checked carefully.

3. Verify the SA1 Spring-Return Function

The SA1 configuration uses one solenoid on side A and spring return.

During commissioning, verify:

energize → spool shifts → de-energize → spring return

Failure to return correctly may indicate spool contamination, spring problems, excessive return pressure or mechanical sticking.

4. Keep the Mounting Surface Flat and Clean

Duplomatic specifies that the valve must be mounted on a suitable flat surface. Poor mounting-surface flatness or surface damage can result in leakage between the valve and its mating surface.

5. Check the K1 Connector Separately

The DS3 documentation states that the K1 connector is ordered separately.

For spare-parts management, verify the complete assembly:

valve + coil + connector.

6. Maintain Hydraulic Cleanliness

The official DS3 specification recommends ISO 4406:1999 Class 20/18/15 fluid cleanliness and 25 cSt recommended viscosity.

Poor contamination control can contribute to spool sticking, slow directional response and increased internal leakage.

7. Monitor Coil Temperature and Electrical Supply

The A230 coil has significantly different inrush and holding power characteristics. Confirm voltage, frequency, connector condition and coil resistance when abnormal heating occurs.

8. Perform Full Functional Testing After Replacement

After installation, verify:

electrical activation → spool movement → P/A/B/T pressure → directional function → spring return → leakage → operating-cycle performance

For OEM replacement projects, our process adds 100% simulated operating-condition testing to verify hydraulic and electrical performance before shipment.