SWH-G02 Seven Ocean Solenoid Valve 315 Bar

Product Overview

The SWH series (featuring key model codes SWH-G02-C3-D24-20, SWH-G02-C4-D24-10, and SWH-G03-C6-20) consists of high-performance wet-armature solenoid operated directional control valves engineered for precise oil flow routing in demanding hydraulic systems. Manufactured to strict ISO 4401-03 (NG6 / CETOP 3) and ISO 4401-05 (NG10 / CETOP 5) mounting standards, these valves serve as 100% direct drop-in replacements for Seven Ocean, Yuken (DSG series), and Rexroth (WE series) directional valves. Constructed with high-density cast iron bodies and micro-finish precision-ground spools, the SWH series minimizes internal leakage while maximizing dynamic switching speed. Every valve undergoes 100% simulated factory condition testing to guarantee reliable, leak-free operation up to 315 bar working pressure.

Technical Specifications

• Model Codes: SWH-G02-C3-D24-20, SWH-G02-C4-D24-10, SWH-G03-C6-20

• Mounting Interface: ISO 4401-03-02 (NG6 / CETOP 3) & ISO 4401-05-04 (NG10 / CETOP 5)

• Maximum Operating Pressure: Ports P, A, B: 315 bar (4500 psi); Port T: 160–210 bar

• Maximum Flow Rate: SWH-G02 (NG6): 63–100 L/min; SWH-G03 (NG10): 100–160 L/min

• Actuation Type: Wet Armature Solenoid Operated (DC 24V / AC 220V with manual override)

• Spool Types: C3 (Closed center), C4 (Open center), C6 (P blocked, A/B to T), and options

• Ingress Protection: IP65 weather-proof enclosure (DIN 43650 connector)

• Internal Leakage Rate: ≤ 15–20 cc/min at maximum 315 bar working pressure

• Switching Time: Energized ≤ 35 ms; De-energized ≤ 20 ms

• Unit Net Weight: SWH-G02 approx. 1.6–2.2 kg; SWH-G03 approx. 4.5–5.2 kg

Key Technical Advantages:

• 100% Direct Drop-in Interchangeability: Standardized subplate pattern allows seamless drop-in replacement on existing CETOP/ISO manifolds without re-piping or block modification.

• Wet-Armature Solenoid Technology: Solenoid push pins operate immersed in hydraulic oil, providing oil-cushioned dampening that dramatically lowers switching noise and reduces mechanical wear.

• High-Density Casting & Precision Spool Fit: Built with fine-grain HT300 cast iron and spools honed to 0.005–0.008 mm radial clearance for exceptional volumetric efficiency and minimal internal drift.

• 100% Factory Simulated Testing: 100% batch tested on dynamic test benches under 315 bar full operating load to verify electrical insulation, coil thermal limit, and switching response time.

Application Areas:

• Industrial Automation: Directional control in plastic injection molding machines, CNC machine tool clamping, and hydraulic presses.

• Mobile & Construction Equipment: Auxiliary valve banks in excavators, outrigger control on aerial work platforms, and steering circuits on road machinery.

• Heavy Metallurgy Machinery: Continuous caster valve stands, hydraulic pusher systems in rolling mills, and lift platform directional manifolds.

Expert Maintenance Tips:

• Strict Installation Torque Control: Always use a calibrated torque wrench to tighten mounting bolts diagonally. Recommended torque: 5.5–7.0 Nm for SWH-G02 (M5 bolts) and 12–15 Nm for SWH-G03 (M6 bolts) to prevent spool binding caused by uneven valve body distortion.

• Voltage Range Maintenance: Maintain solenoid supply voltage within ±10% of rated value. Avoid energizing coils without hydraulic fluid or when manual push pins are obstructed to prevent overheating.

• Oil Cleanliness Management: Keep fluid cleanliness strictly at ISO 4406 19/16/13 or cleaner using 10-micron filtration to prevent fine particles from causing spool varnish or sticking.