Original Mimaki SWJ-320 Check Valve B / Filter – MP-HDK1M-0256

The Mimaki MP-HDK1M-0256 is check valve B, a one-way valve with filter function, used in the ink supply path of the SWJ-320 printer. A check valve lets ink pass in the supply direction and closes against back-flow, so the ink line stays filled and pressure is held between pump strokes or supply cycles. This is a genuine, original Mimaki part – not a copy or compatible replacement.

When a check valve wears, sticks or is blocked by particles, ink can flow back, air can get into the line and the supply becomes unstable. Typical symptoms are ink supply or pressure errors, sub tanks or dampers that do not fill correctly, air bubbles in the tubes, and missing nozzles during long prints. Replacing the valve with the original part restores one-way flow and a clean, steady ink supply.

Key features

• Genuine Mimaki part, code MP-HDK1M-0256
• One-way check valve B with filter function
• Prevents ink back-flow in the supply line
• Helps keep air out of the ink path
• Direct fit for the SWJ-320

Compatible with: Mimaki SWJ-320

Please check the part number on your existing part, or contact us with your machine model and serial number if you are not sure about compatibility.