| Quality management system | ISO 9001:2015 certification | The certificate should be valid, issued by an accredited certification body, and cover the manufacturing site and the relevant scope, such as design, machining, assembly, testing, or distribution of control valves. | Applicable across industrial, commercial vehicle, rail, and general manufacturing supply chains. | Review certificate number, validity period, certified site address, scope, and certification-body accreditation. | Required |
| Automotive quality capability | IATF 16949:2016 | Required when the valve is supplied as an automotive production or service part and the customer contract requires an automotive quality management system. Certification must cover the actual production location. | Relevant to passenger vehicles, commercial vehicles, chassis systems, and automotive seating applications. | Confirm current IATF certificate, site scope, audit status, and inclusion of the supplied product or manufacturing process. | Conditional |
| Production-part approval | PPAP requirements based on customer-specific requirements and the AIAG PPAP reference manual | The supplier should be able to provide the required PPAP level, design records, process-flow diagram, PFMEA, control plan, measurement-system evidence, dimensional results, material or performance test results, sample parts, and PSW when requested. | Widely used in automotive and mobility supply chains; exact submission level is defined by the customer. | Audit a sample PPAP package and verify traceability between drawings, process controls, inspection results, and submitted parts. | Required for automotive programs |
| Special-process control | Process validation and documented control plans | Critical operations such as heat treatment, coating, cleaning, sealing, crimping, welding, or pressure testing should have validated parameters, acceptance criteria, calibrated equipment, and retained records. | Important for valves exposed to vibration, pressure cycling, temperature variation, and contamination-sensitive pneumatic systems. | Review process instructions, validation records, reaction plans, equipment maintenance, and operator qualification records. | Required |
| Product performance testing | Customer drawing, technical specification, and agreed validation plan | Testing should address operating pressure range, leakage, flow performance, actuation force, response time, endurance, temperature range, vibration, corrosion resistance, and connector or fitting integrity where applicable. | Test limits must be matched to the intended vehicle, seat, suspension, or pneumatic-control application. | Review type-test reports, routine inspection records, test equipment calibration, and product-specific acceptance criteria. | Required |
| Material and substance compliance | REACH, RoHS where applicable, conflict-minerals declarations, and customer material requirements | The supplier should identify materials, coatings, elastomers, lubricants, and electronic components and provide declarations or laboratory evidence when required by the destination market or customer. | Relevant to products imported into or placed on markets governed by European, North American, and other customer-specific substance rules. | Check bills of materials, supplier declarations, laboratory reports, restricted-substance statements, and revision control. | Application-dependent |
| Product marking and conformity | CE, UKCA, or other market-specific conformity requirements when applicable | Marking must not be applied solely because a product is industrial equipment. The supplier must identify whether the complete valve or the equipment into which it is integrated falls under a relevant regulation or directive. | Depends on product design, pressure classification, electrical content, intended use, and destination market. | Review the conformity assessment route, technical file responsibility, declaration of conformity, and applicable product classification. | Application-dependent |
| Pressure equipment assessment | Applicable pressure-equipment legislation and technical classification | For products within the scope of pressure-equipment regulations, the supplier should document fluid group, pressure-volume parameters, category, conformity route, safety assessment, and required marking. | Relevant when the valve is placed on a regulated pressure system; not every low-pressure pneumatic valve is automatically regulated as pressure equipment. | Review product classification, maximum allowable pressure, design documentation, test evidence, and declaration requirements. | Application-dependent |
| Traceability and change management | Lot, batch, date-code, and engineering-change controls | Each production lot should be traceable to raw materials, process records, inspection results, operators or equipment where required, and shipment records. Changes should be evaluated and approved before implementation. | Essential for safety-related, warranty-sensitive, and high-volume global applications. | Perform a forward-and-backward traceability exercise and review engineering-change notices, deviation approvals, and customer notifications. | Required |
| Measurement-system capability | Calibration system and MSA or equivalent measurement validation | Inspection and test equipment must be calibrated or verified at defined intervals. Critical measurement methods should demonstrate suitable repeatability, reproducibility, resolution, and accuracy for the tolerance being measured. | Applicable to dimensional, pressure, leakage, flow, force, and functional testing. | Review calibration certificates, equipment status, measurement studies, out-of-tolerance actions, and laboratory competence evidence. | Required |
| Environmental management | ISO 14001:2015 certification or documented environmental controls | Preferred evidence includes controlled waste handling, chemical management, energy and emissions monitoring, environmental-risk assessment, and legal-compliance evaluation. | Increasingly requested in global automotive, transportation, and industrial procurement programs. | Verify certificate scope or audit environmental permits, waste records, chemical inventories, objectives, and corrective actions. | Recommended |
| Occupational health and safety | ISO 45001:2018 certification or equivalent documented system | The supplier should control machinery risks, compressed-air hazards, chemicals, personal protective equipment, emergency response, incident reporting, and worker training. | Supports responsible sourcing and supplier-risk management across manufacturing regions. | Review certificate or site audit records, risk assessments, incident statistics, training records, and emergency procedures. | Recommended |
| Business continuity | Documented business-continuity and disaster-recovery plan | The plan should address alternate equipment or sites, critical raw materials, tooling, utilities, cyber incidents, logistics disruption, labor interruption, and recovery priorities. | Important for globally sourced valves with long qualification cycles or single-source tooling. | Review risk assessments, recovery objectives, backup suppliers, emergency contacts, test results, and recent continuity exercises. | Required for strategic supply |
| Cybersecurity and data protection | Customer-specific cybersecurity requirements and controlled information systems | The supplier should protect drawings, firmware, test data, personal data, and electronic exchange channels through access control, backup, incident response, and controlled document release. | Increasingly relevant where valves include sensors, electronic controls, or digitally exchanged production data. | Review information-security policies, access logs, backup procedures, incident response, and customer cybersecurity assessments. | Application-dependent |
| Global logistics readiness | Export documentation and agreed delivery-performance metrics | The supplier should demonstrate accurate commercial documentation, packaging validation, labeling, country-of-origin control, export classification, lead-time management, and on-time-delivery monitoring. | Relevant to cross-border shipments and multi-region production programs. | Review delivery records, packaging specifications, customs documents, corrective-action history, and capacity plans. | Required |
