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Case Study: Purge Valve Supply for a mining contractor in Southern Africa

Source:Case / Time:2026-09-18

Purge Valve for A mining contractor in Southern Africa

A mining contractor came to us with a purge valve programme for Southern Africa. The brief was ordinary and unforgiving at the same time: a fixed launch window, a landed cost that had to survive freight and duty, and a part that had to match an existing sample. This case records what was specified, what went wrong in sampling and how the bulk order landed.

The starting point

  • Lead time that slipped twice before bulk started
  • Packing that arrived crushed at the port
  • A fitment that looked right on paper and failed on the bench

Purge Valve case study

What was specified

PartPurge Valve
ClientA mining contractor
MarketSouthern Africa
Volume5,000 pieces across 6 specifications
Base materialStainless Steel
Sampling rounds3
Delivery window8 weeks from PO to ex-factory
ComplianceSGS

How it was resolved

  1. The specification was rebuilt around Stainless Steel and the tolerance locked before bulk.
  2. A pre-production sample was approved and kept as the golden reference.
  3. Production ran with in-line inspection and a mid-run photo report.
  4. Cartons were packed to the client's own barcode and ratio specification.
  5. Documentation shipped with the goods instead of after them.

Purge Valve production run

Result

  • 5,000 pieces delivered inside the 8-week window.
  • Unit cost held within 3.0% of the original quotation.
  • Inspection-related rejection stayed under 1.0%.
  • The specification is on file, so reorders reproduce the approved sample.

What we would repeat

Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.

Planning something similar?

Ask for the current catalogue and the specification sheet for this line.

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