Aluminum Die Casting Valve Housing for Pneumatic Systems: Threads, Air Leakage and Clean Passages

2026-07-17 09:44:18

An aluminum die casting valve housing for pneumatic systems must keep air passages clean, hold threaded fittings reliably and prevent leakage around ports or sealing faces. Unlike a simple structural housing, a pneumatic valve housing should be reviewed for flow direction, thread quality and internal burr control before tooling starts.

Threaded ports should be controlled by function

Thread type, effective depth, chamfer and sealing method should be defined clearly. BSP, NPT, metric and customer-specific threads should not be guessed from appearance. If the fitting seals on thread, O-ring or shoulder face, the supplier needs this information before CNC machining.

Pneumatic valve housing control table

Air leakage testing should be defined early

If the part is pressure-related, the RFQ should state test pressure, medium, holding time and acceptance rule. Sample-only testing and 100 percent testing have different fixture requirements and costs, so the scope should be clear before quotation.

Clean passages protect downstream components

Loose burrs or chips can move into valves, regulators or actuators. Buyers should define cleaning level according to the final system. For sensitive applications, caps or protected packing may be needed after cleaning.

Inspection checklist

Related product reference: Aluminum Die Casting Multi Port Valve Connector. Related pages: CNC machining die casting parts, dimensional inspection and quality control.