At CMI, engineering performance goes beyond filtration efficiency. We also ensure the structural integrity, safety, and regulatory compliance of every pressure vessel and skid system we manufacture.
For projects supplied to the European market, compliance with the Pressure Equipment Directive (PED) is often a mandatory requirement. Our engineering team supports customers through the documentation, fabrication, inspection, and conformity assessment process based on the applicable PED category.

Navigating PED Compliance for Pressure Equipment
PED conformity routes vary according to equipment type, fluid group, design pressure, vessel volume, and overall risk category (Category I to IV). CMI helps clients select the appropriate conformity assessment module for each project.
We provide clear guidance for standalone housings, pressure vessels, filtration skids, and integrated systems requiring CE marking for European installation.
Conformity Assessment Matrix
| Requirement / Task | Module A | Module B | Module D1 | Module H / H1 | Module G |
|---|---|---|---|---|---|
| Technical Documentation | M | M | M | M | M |
| Material Approval | M | I | M | I | I |
| Welding Procedure (WPS) | M | I / TP | I / TP | I / TP | I / TP |
| Welding Personnel (WPQ) | M | I / TP | I / TP | I / TP | I / TP |
| NDT Personnel Qualification | M | TP | M | TP | TP |
| Final Inspection & Testing | M | M | M | M | I |
| CE Marking / NB Number | M | - | M | M | M |
Legend: M = Manufacturer (CMI) | I = Notified Body | TP = Recognized Third-Party Organization
Why CMI Engineering Matters
1. Full Documentation Traceability
We prepare complete technical files covering drawings, design calculations, material certificates, welding records, inspection reports, and pressure test documentation for customer audit and regulatory review.
2. Certified Fabrication Expertise
Our welding and inspection processes can be supported by recognized third-party approvals, helping meet high-integrity pressure equipment requirements.
3. Flexible System Design
Whether the project requires a simple low-category vessel or a more complex pressure system requiring notified body involvement, CMI supports the compliance workflow from design stage to final release.
Typical Equipment Covered
- Bag filter housings
- Cartridge filter housings
- Coalescer vessels
- Pressure strainers
- Skid-mounted filtration systems
- Custom pressure equipment assemblies
CMI Commitment
At CMI, compliance is integrated into engineering from the beginning. We help customers reduce approval delays, simplify documentation review, and receive pressure equipment built for both performance and regulatory confidence.
Relevant Cases
Get a Quote
Our fabrication experts are ready to help you with custom-made filter housing and fabricated metal filter vessel solutions. Contact us with your specific requirements for a customized quote.
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