The short answer
Procuring a pipeline valve safely starts with an approved datasheet, not a supplier's catalogue. Choose a supplier route — local stockist, authorised OEM channel, your EPC's vendor, or international sourcing on request — that can deliver the exact type, size, pressure class, materials and documents the datasheet calls for. Verify the manufacturer independently, agree inspection before shipment, and let the responsible engineer approve any deviation.
The procurement path
- Fix the requirement in an approved datasheet or valve schedule: service, type, size, pressure class, design standard, materials, ends, actuation and documents. The RFQ specification checklist lists every field and who decides it.
- Choose the supplier route that can actually meet it (see the comparison below).
- Ask every offer to state the manufacturer, the place of manufacture, any deviations from the datasheet and the document package.
- Verify the manufacturer independently. For API 6D valves, check the licence on API's public directory.
- Agree inspection and testing before shipment: what is witnessed, by whom, and what releases the valve.
- Check the documents against the nameplate and markings on arrival. The documentation guide shows what each record proves.
- Have the responsible engineer approve any deviation before it is accepted.
Supplier routes compared
| Route | Usually suits | Watch for | Ask |
|---|---|---|---|
| Local stockist | Common sizes and classes needed quickly | Unclear manufacturer, old stock, documents that don't match the valve | Which manufacturer, when made, and can I see the certificates for these serial numbers? |
| Authorised OEM representative | A specified brand, warranty and after-sales support | Lead times; confirm the authorisation is current | Can the manufacturer confirm your authorisation in writing? |
| Your EPC's or operator's approved vendor | Valves on a project with an approved vendor list | Vendor registration rules that limit who may supply | Is the manufacturer already approved for this project? |
| International sourcing on request | Non-stock sizes, materials or specifications; comparing manufacturers | Freight, clearance and lead time; inspection must be planned before shipment | Who inspects before shipment, and what is the landed-cost basis? |
Vastlane works on the last route: we source against your datasheet and coordinate evidence, inspection arrangements, freight, clearance through appropriate parties and delivery. Where an authorised dealer or your project's approved vendor is the better route, we say so.
Red flags
- No manufacturer named, or "approved international manufacturers" without names
- Certificates that don't carry the valve's serial or heat numbers
- Nameplate data that differs from the datasheet or the documents
- Body, trim or seat materials substituted without a written deviation
- A test report that doesn't say which tests were done, or at what pressure
- An API Monogram claim the API Composite List can't confirm for that facility
- "Fully certified" with no list of the certificates themselves
Who decides what
| Party | Responsible for |
|---|---|
| Buyer's responsible engineer | The datasheet, technical suitability for the service, and approving any deviation |
| Manufacturer | Design and manufacture to the stated standard, and the material and test records it issues |
| Independent inspector, where agreed | Witnessing tests and reviewing documents before release |
| Vastlane | Sourcing against the datasheet, collecting offers and evidence, arranging agreed inspection, and coordinating freight, clearance and delivery |
This guide is a procurement orientation, not engineering or safety advice. Vastlane does not select valves for hazardous service, certify products or act as an engineering authority.
Nigerian considerations
Oil-and-gas operators and their contractors often require suppliers to be prequalified through the NOGIC Joint Qualification System, which the Nigerian Content Development and Monitoring Board runs as the industry's single registration and prequalification system for contractors. If your contract requires a JQS-registered supplier, say so in the requirement; we confirm at the outset whether that condition can be met for the transaction.
Import requirements, duty and port charges are confirmed for each shipment during quotation and clearance.
Sources
External facts on this page come from these sources, each read on 15 October 2026. Regulations change; requirements for your vehicle are confirmed during quotation and clearance. This guide is not legal or financial advice.
- API SPEC 6D: Specification for Valves, 25th edition (Nov 2021; Addendum 3, Mar 2025) — American Petroleum Institute webstore
- API STD 598: Valve Inspection and Testing, 11th edition (Feb 2023) — American Petroleum Institute webstore
- API Composite List (Monogram licensees and registered companies) — American Petroleum Institute
- ASME B16.34-2025: Valves — Flanged, Threaded, and Welding End — ASME
- NOGIC Joint Qualification System — Nigerian Content Development and Monitoring Board