Industrial Valve Inspection: ITP, Hold Points and Traceable Evidence
Industrial valve inspection is a planned evidence chain, not a final visual check. The inspection and test plan should connect purchase-order requirements to material receipt, identification, manufacturing processes, dimensional checks, NDE, assembly controls, pressure and functional testing, coating, marking, document review and shipment release. Each record must remain traceable to the valve or component it represents.
Six layers of an auditable valve inspection plan
Purchase order, datasheet, drawings, specifications, standards and approved deviations.
Manufacturer, purchaser, third party and sub-supplier review or witness roles.
Incoming material, fabrication, machining, assembly, testing, coating and packing.
Each activity links to an approved procedure, drawing or project requirement.
Certificate, inspection report, photo, chart, result sheet or signed release note.
Heat, component, serial, tag, procedure, instrument, inspector and date relationships.
Build inspection points around risk and evidence
| Manufacturing stage | Inspection focus | Typical evidence | Control point question |
|---|---|---|---|
| Material receipt | Grade, heat, dimensions, condition and identification | Material certificate, receiving report, PMI/hardness where specified | Must work stop until material identity is accepted? |
| Casting/forging and repair | Surface, defects, heat treatment and permitted repair | Visual/NDE reports, heat-treatment chart and repair documentation | Is purchaser approval or witness required before repair? |
| Machining | Critical dimensions, finish, concentricity and wall condition | Dimensional report, gauges, drawings and inspection status | Which characteristics require recorded values rather than pass/fail? |
| Assembly | Cleanliness, components, orientation, torque and functional movement | Assembly checklist, component traceability and torque record | Which steps become inaccessible after assembly? |
| Testing and coating | Shell/seat/function plus preparation, thickness, cure and marking | Test reports, instrument IDs, coating report and nameplate check | Which tests are hold or witness points? |
| Final documentation and release | Record completeness, preservation, packing and shipment identity | Final index, release note, packing list and photographs | Are all comments closed before shipping release? |
Inspection evidence that carries engineering value
Certificates and component marking show what entered the valve.
Heat treatment, welding, repair and NDE records show how it was made.
Recorded critical dimensions show interfaces and assembly fit.
Pressure, leakage, operating and package tests show defined results.
Preparation, coating, marking and preservation evidence supports delivery condition.
The final index links every required record to project and valve tags.
Claims and shortcuts this page does not support
Inspection cannot be added only at the end
Material identity and inaccessible process evidence must be captured while the work is performed.
A photo is not a complete inspection record
Useful records include acceptance criteria, identification, measured result, procedure, date and responsible party.
Third-party presence does not transfer manufacturer responsibility
The manufacturer remains responsible for conformity and complete records even when a purchaser or inspector witnesses work.
From requirement to auditable evidence
Information and records to define
How this resource should be used
Procurement and technical evaluation for EPC, quality and inspection personnel building an industrial valve ITP and traceable manufacturing record book.
Raymon Valve technical content team. Final project decisions require the controlled documents and responsible engineer or quality reviewer.
Inspection requirements derive from the purchase order, approved ITP, product/test standards and project specifications. This guide does not claim that every listed activity is performed for every valve; the agreed project scope controls.
Technical scope reviewed 27 July 2026. Editions, procedures, acceptance criteria and product evidence must be reconfirmed before order.
Industrial Valve Inspection and Test Planning FAQ
What is an inspection and test plan for valves?
An ITP maps manufacturing and test activities to procedures, acceptance criteria, records, responsible parties and purchaser or third-party intervention points.
What is the difference between a hold point and a witness point?
At a hold point work cannot proceed without the required release; at a witness point the notified party may attend according to the agreed procedure and notification.
How is valve material traceability maintained?
Identification and records should connect material heat and component markings to certificates, manufacturing stages, valve serial/tag and final documents.
What belongs in a final manufacturing record book?
The approved index may include drawings, datasheets, material records, process/NDE reports, tests, coating, nonconformance closure, manuals and release documents.
Send the requirement and the evidence you need to verify
We will identify the applicable scope, missing records and approval path without inventing compliance claims.
Material and qualification evidence paths
Use the exact test resource that matches the evidence question; one passed test cannot substitute for another material or service requirement.
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