Hawe Seated Directional Valve GR2-1 GR2-2 BVG2R BVP2R VP1R

The industrial-grade HAWE Series Ultra-High Pressure Zero-Leakage Seated Directional Valves (focusing on high-volume B2B critical component replacement codes including VP1R-G24, BVG2R-G24, GR2-1-G24, GR2-2-G24, WGZ3-1R-WG230, SWR1A7-UD-1-WG230-210, and BVP2R-G24), engineered by Chengyuan Hydraulic, are heavy-duty, ball/cone-seated fluid switching actuators. Purpose-built for high-pressure hydraulic circuits, machine tool clamping manifolds, accumulator safety lockouts, and heavy hoisting load-holding blocks where execution drifts cannot be tolerated, these valves leverage a precision seat sealing architecture to deliver absolute bubble-tight zero-leakage performance.

Complying rigidly with international fluid power mounting and high-pressure subplate manifolds, Chengyuan’s premium replacement valves offer 100% direct drop-in interchangeability with authentic German HAWE specifications. From standard subplate mounting dimensions, internal manifold interface orientations, total envelope geometries, to specialized electromagnetic coil wattage ratings (24V DC or integrated rectifying 230V AC plug systems), these valves align perfectly into current machinery infrastructure. Global hydraulic system rebuilders and procurement managers can execute drop-in field service swap-outs without altering control PLC telemetry or altering hardline steel plumbing.

In ultra-high pressure applications (operating consistently within $40.0\sim 70.0 \text{ MPa}$ domains), directional control valves are continuously subjected to severe transient fluid forces and immense hydraulic shock loading. Any degradation of the micro-spherical valve seating, seat erosion, or coil armature magnetic decay will yield internal fluid bypass, initiating cylinder drift, excessive pump duty cycles, and un-commanded system descent. To secure continuous operation, 100% of Chengyuan’s replacement seated valves undergo 100% strict dynamic simulation on ultra-high pressure test benches. Tested at full continuous flow rates up to maximum pressure boundaries ($70 \text{ MPa}$), each component is qualified to ensure zero internal cross-port leakage, rapid response times, and thermal coil compliance under continuous load conditions.

Technical Specifications

• Product Classification: Directional Seated Valve / Cone and Ball Style Zero-Leakage Digital Valve

• Compatible Base Frameworks: Engineering adaptation for HAWE Type GR, BVG, BVP, VP, and SWR valve series

• Nominal Valve Interface Sizing: Common variants matching Size 1 (NG6) and Size 2 (NG10) interface standards

• Maximum Fluid Operating Pressure:

  • GR2-1 / GR2-2 Series: Rated up to $40.0 \text{ MPa}$ (400 bar / 5800 psi)

  • BVG2R / BVP2R Series: Rated up to $40.0 \text{ MPa}$ (400 bar / 5800 psi)

  • VP1R Series: Rated up to $40.0\sim 70.0 \text{ MPa}$ (400 to 700 bar / 10,150 psi dependent on size envelope)

  • SWR1A7 Pilot Blocks: Rated up to $42.0 \text{ MPa}$ (420 bar / 6090 psi)

• Maximum Permissible Flow Scale: Ranging from $12 \text{ L/min}$ to $30 \text{ L/min}$ based on frame sizing limits

• Technical Coding Identifiers Breakdown:

  • Replacement Reference: GR2-1-G24 / GR2-2-G24

    • GR2: Designates frame size 2 seated valve mechanism with a manifold subplate profile.

    • 1 / 2: Indicates specific internal fluid-path logic configurations (e.g., 2/3-way or 2/4-way functions).

    • G24: Equipped with a high-torque 24V DC wet solenoid assembly.

  • Replacement Reference: BVG2R-G24 / BVP2R-G24

    • BVG/BVP: BVG indicates line-mounted threaded pipe connection ports; BVP indicates standard manifold subplate mounting geometry.

    • R: Incorporates internal check-valve seating logic control elements.

  • Replacement Reference: WGZ3-1R-WG230 / SWR1A7-UD-1-WG230-210

    • Function: Multi-station manifold/pilot blocks utilizing a “WG230” coil setup specifying integrated 230V AC rectifying terminal connectors; “210” marks a pre-set factory safety relief threshold of $21.0 \text{ MPa}$ ($210\text{ bar}$).

• Actuation Drive Alternatives: Wet-pin solenoid control, direct hydraulic piloting, or pneumatic actuator links

• Fluid Medium Compatibility: Standard mineral-based hydraulic oils, with system cleanliness maintained strictly to ISO 4406 20/18/15 or cleaner

Key Technical Advantages

• Micro-Spherical Mirror-Polished Seat Matrix: The inner sealing ball/cone elements and mating valve seats are engineered from through-hardened, high-purity bearing steels, CNC-ground to a surface profile accuracy under $1\mu\text{m}$. When closed, the metal-to-metal interface compresses perfectly at a molecular level, completely blocking fluid paths to prevent cylinder drift during long-term load-holding cycles.

• Pressure-Balanced Wet-Pin Solenoid Architecture: The solenoid armature operates fully submerged within the system’s hydraulic oil medium. This oil-filled armature chamber self-lubricates the shifting core and damps mechanical impact forces, while equalizing static internal hydraulic pressures for smooth shifting. The coil assembly delivers an extended operational life exceeding 20 million cycles.

• Hydraulically Pressure-Balanced Valve Core Design: The internal flow geometries are engineered using fluid-dynamic balancing principles to counteract internal axial pressure biases against the valve stem. Consequently, the mechanical force needed to shift the valve under high pressure is significantly reduced, minimizing hydraulic line hammer and system chatter during actuation.

• All-Forged High-Strength Solid Structural Body: The external housings are milled from high-tensile solid forged steel rather than low-grade cast irons. This allows the valve assembly to withstand peak system pressure shocks up to $70\text{ MPa}$ without micro-fatigue cracking, allowing for highly compact and reliable high-pressure manifold layouts.

Application Areas

The high-pressure HAWE replacement seated directional valves are vital for applications requiring absolute load-holding and zero-drift security:

• CNC Machine Tools & Automated Workholding Fixtures: Maintaining constant pressure on heavy-duty hydraulic clamps and chucks to prevent workpiece shifting during machining.

• Heavy Hydraulic Presses & Accumulator Control Circuits: Functioning as fail-safe safety isolation and pressure-holding valves for high-pressure accumulator loops.

• Wind Turbines & Marine Winches: Controlling rotor pitch lock mechanisms and high-torque braking/parking circuits under severe environmental conditions.

Expert Maintenance Tips

• When Connecting AC Power with Rectified Coils (such as WG230), Always Ensure the Rectifier Junction Plug Is Intact: Never bypass the terminal plug to wire an AC line directly into a bare DC coil winding. Doing so will cause severe current overloading and destructive coil chatter, burning out the component within minutes.

• When Installing Subplate Seated Valves (such as BVP2R), Cross-Tighten the Four Mounting Bolts Progressively to Specification: Uneven bolt torque can twist the valve housing slightly. This minor structural distortion can bind the micro-tolerance internal valve stem, cause return spring stickiness, or pinch the base plate O-rings, leading to high-pressure external leaks.

• The Hydraulic System Must Be Equipped with High-Efficiency Filtration Rated at $\le 10 \mu\text{m}$: Seated valves rely on precise line-to-line contact. If fine metal filings, weld slag, or hard oxides catch in the sealing seat interface, the high compression force will score the precision seating surfaces. This degrades the zero-leakage performance into high internal bypass, making regular fluid cleanliness testing essential.