Certifications & Compliance
Welker products are designed, manufactured, and tested to meet the most demanding international standards. View our active certifications, compliance documentation, and regulatory approvals below.
- Approval No.ISO 9001 – 00025278
- Issued12 October 2025
- Expires11 October 2028
- Original12 October 2019
- IssuerLRQA Limited, Birmingham, UK
Design, Manufacture, and Commissioning of Pipeline Control Valves, Gas and Liquid Sampling Systems, High Pressure Sample Cylinders, Chemical Injection and Odorization Systems, Insertion Devices, Instrumentation and Filtration Products, and Custody Transfer Instrumentation Buildings.
- StandardUL Listed
- ScopeWelker certified products
Welker products carrying the UL mark have been evaluated and certified by Underwriters Laboratories to applicable product safety standards.
- StandardCSA Certified
- RegionCanada & North America
CSA certification confirms that Welker products have been tested and meet applicable Canadian and North American safety standards.
- PermitsSP 7657 • SP 11054 • SP 10370 • SP 16074
- Products9 certified products
- ScopeHazardous materials transport in pressure vessels
Welker products are authorized under U.S. DOT Special Permits for the transportation of hazardous materials. All permits link directly to the official PHMSA database.
- ScopeTransportation of dangerous goods in Canada
- RegulationTransportation of Dangerous Goods Act
Welker pressure vessels are certified by Transport Canada for the transportation of dangerous goods, meeting Canadian federal transportation safety requirements.
- Cert No.0343/PED/ROT/PRJ11100270066/1
- Issued19 September 2023
- Expires22 September 2026
- Notified BodyLRQA Nederland B.V. — NB No. 0343
- ModuleAnnex III, Module H
Welker's Quality Management System has been assessed against the EU Pressure Equipment Directive. Covers Constant Pressure Sample Cylinders (max 3,600 psig), Liquid/Gas Sample Pumps (max 5,000 psig), and Top Entry Control Valves (max 1,480 psig).
- ScopePressure-containing products for Canadian market
- RegulationProvincial/Territorial Boiler & Pressure Vessel Acts
CRN registration confirms that Welker's pressure-containing products meet the design requirements of the applicable Canadian provincial and territorial boiler and pressure vessel safety codes. Registration is required to legally sell pressure equipment in Canada.
Questions About Certifications?
Our team can provide documentation, answer compliance questions, or help verify that Welker equipment meets your project's regulatory requirements.
