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Product details

1. Product Name Breakdown

• Dual Proportional Valve Blanking Plates

• Dual Proportional Valve: A valve that simultaneously controls two independent hydraulic/pneumatic circuits with precise flow/pressure regulation.

• Blanking Plate: A cover plate used to seal unused ports or isolate specific circuits, preventing leakage or contamination.

• EFBG-03-125/160: Model code, typically indicating:

• EFBG: Series designation (may represent brand, function, or structural type).

• 03: Valve body size or port specification (e.g., DN15/DN20).

• 125/160: Pressure rating (e.g., 125bar/160bar) or flow range (e.g., 125L/min).

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2. Core Functions

• Sealing & Isolation

• Seals spare ports or test interfaces on proportional valves to prevent hydraulic/pneumatic fluid leakage.

• Isolates faulty valves in parallel systems to maintain operational continuity.

• Pressure Protection

• Shields valves from backpressure surges, extending service life.

• Modular Maintenance

• Enables quick reconfiguration (e.g., converting dual-action to single-action) via plate replacement.

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3. Technical Specifications (Example)

【表格】

Parameter Description

Compatible Valve Dual proportional valves (hydraulic/pneumatic directional/pressure valves)

Port Size 125/160 (may refer to port diameter or thread spec, e.g., G1¼" or M16×1.5)

Pressure Range 0–160bar (inferred from model suffix)

Temperature Range -20°C to +80°C (resistant to hydraulic oil heat)

Material Carbon steel zinc-plated / Stainless steel 304 (corrosion-resistant)

Sealing Type O-ring seal or flat-face seal (depends on valve port design)

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4. Typical Applications

• Injection Molding Hydraulic Systems

• Seals unused proportional valve ports to prevent hydraulic oil return to the tank.

• Temporarily isolates idle circuits during multi-station mold changes.

• Industrial Automation Equipment

• Covers pneumatic proportional valve ports in robotic gripping systems for stability.

• Testing & Debugging

• Blocks partial valve ports to simulate single-channel operation for troubleshooting.

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5. Installation & Maintenance

• Installation Steps

1. Clean valve ports to remove burrs or oil residue.

2. Align blanking plate dowels with valve port holes.

3. Tighten fixing bolts evenly (torque value: 15–20N·m, refer to valve manual).

• Maintenance Cycle

• Inspect O-rings for aging every 500 operating hours.

• Replace O-rings annually (or sooner in high-temperature/corrosive environments).

• Troubleshooting

• Leakage: Check plate flatness or replace seals.

• Vibration: Verify bolt tightening torque.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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3 year

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