Yuken DSG Series Solenoid Valve | DSG-02-3C12 DSG-01-3C60 Hydraulic Directional Valve

The DSG Series high-pressure, high-flow hydraulic solenoid directional valves from Chengyuan Hydraulic are premium fluid power control components fully compatible with Yuken industrial standards. Widely deployed across machine tools, injection molding systems, and custom industrial hydraulic power units (HPUs). For core configurations like DSG-02-3C12-A240-N1-50 (Size 02/NG6, AC240V, 3-position Y-type spool), DSG-02-3C12-A100-N1-50, and the compact DSG-01-3C60-A110-N1-50 (Size 01/NG4, 3-position M-type spool), we incorporate a signature “5-Chamber” valve body casting process. This layout features broad internal galleries that significantly minimize choking and energy losses. Every single solenoid valve undergoes 100% simulated maximum pressure switching, internal leakage regulation, and AC solenoid overload latching testing prior to shipment to ensure reliable performance under high-frequency cycling, delivering proven 100% original-place interchangeability.

Technical Specifications :

• Series Designation: Yuken DSG Series Industrial Solenoid Directional Valve (50 Design Code)

• Valve Frame Sizes: DSG-01 Series (6mm / NG4 / 01 Size) ; DSG-02 Series (10mm / NG6 / 02 Size)

• Spool Configuration Center Functions: 3C12 (3-Position 4-Way, Open Center Y-type) / 3C60 (3-Position 4-Way, M-type, P-blocked, A/B/T connected)

• Solenoid Voltage Ratings: A240 (AC 220V-240V, 50/60Hz) / A100 (AC 100V-110V) / A110 (AC 110V)

• Electrical Connection Profile: N1 (Plug-in conduit terminal box with built-in LED indicator lights)

• Maximum Pressure Handling (Ports P/A/B): Up to 31.5 MPa (315 bar) for both DSG-01 and DSG-02 series

• Maximum Permissible T-Port Backpressure: 16 MPa (160 bar)

• Maximum Rated Flow Capacity: DSG-02: up to 100 L/min (Spool type dependent); DSG-01: up to 63 L/min

• Maximum Switching Cycles: 240 times/minute (AC Solenoid continuous threshold limit)

Key Technical Advantages:

• Optimized 5-Chamber Body Geometry: The valve body features a spacious 5-chamber casting structure. Compared to old 4-chamber designs, this layout significantly expands the cross-sectional flow area within the galleries. It slashes fluid resistance and pressure drop ($\Delta P$) by over 20%, heavily suppressing hydraulic temperature accumulation during rapid duty cycles.

• Wet-Armature Solenoid Construction: Utilizing high-pressure wet-armature solenoids where the moving core is entirely immersed and lubricated by the system fluid. This provides natural oil-dampening for ultra-quiet actuation while eliminating external shaft seals that are prone to wear and leakage. Coils are injection-molded with premium epoxy resin, yielding IP65-rated moisture protection.

• Micro-Tolerance Spool Clearance Matching: The spool and bore are precision centerless ground and paired to a clearance tolerance tightly restricted within $4 – 6 \mu m$. This micro-fit ensures minimal slippage and internal blow-by under max pressure (31.5 MPa), while ensuring the spool glides frictionlessly without hydraulic locking or actuation lag.

• Plug-in Wired Terminal Box with Indicator (N1): Standard outfitting includes a heavy-duty N1 junction box armed with bright LED indicator bulbs. Operators in noisy mills or dark facilities can visually verify solenoid power status at a glance without multi-meter tools, drastically shortening electrical troubleshooting windows.

Application Areas:

• Metal Cutting & CNC Machine Tools: Directional control for chuck clamping cylinders, tool turret positioning indexing, and spindle engagement.

• Plastics & Die-Casting Machinery: Auxiliary multi-station circuits like ejection cylinder return loops and core-pulling manifolds.

• Automated Hydraulic Power Units: Primary control stack for automated conveyor systems, heavy-duty lift tables, and waste compactors.

Expert Maintenance Tips:

• Rigid T-Port Backpressure Limitations: The T-port (tank return) allows a maximum backpressure of 16 MPa. If return lines are excessively long, filters become clogged, or multiple valves share a choked tank line, the excess backpressure will distort the armature sleeve. This causes the AC solenoid to jam unseated, resulting in instantaneous coil burnout.

• Never Energize an Unmounted AC Coil: For AC coil variants like A240 or A100, never power on the coil when it is removed from the armature guide tube. Without the inductive resistance provided by the steel core, the alternating current will spike instantly, cooking and melting the internal insulation windings within seconds.

• Stringent Particulate Contamination Threshold: Spool-type architectures are highly sensitive to solid abrasives. Maintaining high-efficiency loop filtration at $10 \mu m$ or tighter is non-negotiable. If contamination jams the spool, an AC solenoid cannot seat completely, forcing the inrush current to remain active until the coil overheats and burns out.