Injection Moldeing Machine Spare Parts

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Injection Molding Machine Spare Parts – Haitian Valves

Haitian valves are core hydraulic control components for Haitian MA and IA series injection molding machines. They regulate the pressure, flow and flow direction of hydraulic oil to control the actions of injection, mold clamping, ejection and injection carriage.

1. Proportional Valves

HNC EBG / EBHT Series (Original Standard Fittings)

- Models: EBG-03-C-R-01, EBG-10-C-L-01, EBHT-03-H-R

- Function: Perform proportional control on pressure and flow for injection and mold clamping operations

- Specifications: Rated voltage 24VDC, control signal 0–10V, maximum working pressure 21 MPa

Electro-hydraulic Proportional Valves

- Models: EFBG-03-125A-C, EFBG-03-160-H

- Application: Precision control for high-speed injection and pressure holding processes

2. Solenoid Directional Valves

Original Haitian SWH Series

- Models: SWH-G02-C22-D24-20-M3(HT), SWH-G03-C22-D24-20-M3(HT)

- Rated voltage: 24VDC; Common spool types: Y-type, O-type

- Function: Control mold opening & closing, material ejection, forward and backward movement of injection carriage

Vickers DG4V Series (Replacement Type)

- Model: DG4V-3-2C-M-U-H5-60-EN12

- Features: Fast response and long service life, suitable for high-precision injection molding machines

3. Pressure Control Valves

Relief Valves

- Model: ER-G01 (Direct-acting proportional relief valve)

- Function: Limit system pressure and provide overpressure protection

Pressure Reducing Valves

- Function: Reduce main circuit pressure and maintain stable secondary pressure for the clamping unit

4. Check Valves & Cartridge Valves

Check Valves for Screw Tip

- Materials: 38CrMoAl, bimetallic alloy

- Function: Prevent molten plastic backflow during injection

Cartridge Valves

- Application: High-flow main hydraulic circuits for large-tonnage injection molding machines (1000 tons and above)

5. Safety Valves & Related Accessories

Hydraulic Safety Valves

- Equipped with QM stroke limiter and 24VDC switch

- Function: Mold safety protection and position detection

Solenoid Coils

- Rated voltage: 24VDC / 220VAC

- Fit for: SWH series and EBG series valves

6. Main Technical Parameters

- Working pressure: 14–21 MPa (servo hydraulic system)

- Standard voltage: 24VDC

- Flow rate: 10–250 L/min

- Applicable models: Haitian MA50 to MA3000, IA series

7. Interchangeable Equivalent Models

- HNC valves: Direct replacement for original Haitian valves

- Alternative brands: Vickers, Rexroth, Yuken

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