Brass valve fitting protected feature check query

The source separates threads, sealing faces, internal passages, wrench features and coating-preparation surfaces. Each has its own damage mode and inspection question. Thread gauge and mating-part checks do not replace a sealing-face inspection; a clean-looking exterior does not establish a clear cross-passage. Keep the selected rows together when several features share the same fitting, and establish what the drawing requires before treatment.

Plan inspection for brass valve and fitting features

External or internal threadsSealing face or seatCross-holes and internal passagesHex flats and wrench featuresPlating or coating preparation surfaces

Select the entries relevant to your review.

Brass valve fitting protected feature check query - First review field for each entry - Jintaijin — First review field for each entry. Original diagram of qualitative source fields; not a trial outcome.

Select every functional feature exposed to finishing

No pressure rating, leak limit or plating acceptance inferred. Keep every selected requirement with the part and the actual trial record. Selecting a row does not show that its acceptance condition has been met.

Agree the functional checks before the trial

Record protected geometry, mating interfaces and the approved inspection method. Use the relevant drawing and buyer-defined leak, assembly, passage or adhesion test; the table does not supply those limits. Inspect embedded residue, retained media and contact marks after the complete rinse and drying sequence. A feature checklist cannot establish pressure suitability, material compliance or production release.

Reviewed source reference

External or internal threads

Finishing risk: Crest rounding, damaged thread start, retained media

Acceptance check: Go/no-go gauge and representative mating part

Sealing face or seat

Finishing risk: Edge rounding, scratches, loss of flat contact

Acceptance check: Drawing check, surface inspection, leak or assembly test

Cross-holes and internal passages

Finishing risk: Media lodging, incomplete burr access, retained residue

Acceptance check: Borescope or visual check, air or fluid passage check

Hex flats and wrench features

Finishing risk: Rounded corners and part-to-part dents

Acceptance check: Across-flats dimension and tool engagement

Plating or coating preparation surfaces

Finishing risk: Embedded residue, uneven texture, contamination

Acceptance check: Cleanliness and downstream adhesion or plating trial

Read the Jintaijin technical article. Source table reviewed 3 October 2026. Possible causes, directions and adjustments remain conditional reference fields.

Brass valve fitting protected feature check query - Risks or checks remain visible - Jintaijin — Risks or checks remain visible. Original diagram of qualitative source fields; not a trial outcome.

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