Engineering standards
Schrader Pacific Advanced Valves: evidence and interfaces
A practical framework for specifying a wheel-end component and defining what must be verified.
Specification and verification matrix
Use the matrix to prepare a discussion. Acceptance criteria and test methods must be agreed for the component, application and market; the examples below are review topics rather than published performance results.
| Topic | Input to establish | Evidence to request |
|---|---|---|
| Mechanical interface | Rim hole dimensions, profile, sensor clearance and seal contact | Current drawing and inspection criteria |
| Operating conditions | Pressure, temperature, exposure and duty cycle | Relevant test method and conditions |
| Sensor application | Vehicle platform, communication protocol and mounting arrangement | Application-specific compatibility documentation |
| Change and traceability | Part revision, lot identification and packaging requirements | Agreed records and change notification scope |
Evidence checklist
- System scope: Confirm the organization, location, certificate validity and activities covered by any ISO or IATF quality system documentation.
- Product rules: Identify regulations and standards relevant to the product category and target market. Do not treat a management system certificate as product approval.
- Test conditions: Request the method, sample configuration, limits and conditions behind a test result. Results from a different assembly may not transfer to the intended use.
- Revision history: Align the part number, drawing revision and lot identification with the documents being reviewed. Record unresolved assumptions before release.
For wheel spacers, adapters or hub centric rings, mating diameter, bolt pattern, offset change and fastener engagement are important interface questions. For valves and TPMS components, rim-hole sealing, clearance and protocol are equally application specific. A visual resemblance alone is not a fitment determination.
Request an evidence review
Provide the product family and target market so the relevant documentation can be identified.