Standards & Certifications
Selecting industrial valves requires precise alignment between design codes, testing procedures, connection geometries, and quality management frameworks. This guide outlines key verification requirements to ensure engineering compliance, pipeline compatibility, and quality assurance during procurement.
Valve Design Standards
Design standards define technical requirements, structural limits, and safety margins for specific valve types. Standard references must be matched against the exact product category and operating conditions.
Butterfly Valve Design Codes
API 609:
Butterfly Valves: Double-Flanged, Lug- and Wafer-Type
EN 593:
Industrial Valves - Metallic Butterfly Valves
MSS SP-67:
Butterfly Valves
BS 5155:
Specification for Steel Butterfly Valves
Technical Specifications & Reference Matrix
|
Procurement Requirement |
Applicable Codes / Standards |
Core Verification Focus |
|
Butterfly Valve Design |
API 609, EN 593, MSS SP-67, BS 5155 |
Body layout, disc/stem configuration, seat materials |
|
Pressure Testing & Leakage |
API 598, ISO 5208, EN 12266 |
Hydrostatic shell test, seat leakage rate limits |
|
Flange & Connection Standards |
ASME B16.5, EN 1092, DIN 2501, ISO 2531, AWWA C207, JIS / KS |
Bolt pattern, pressure class, flange facing |
|
Face-to-Face Dimensions |
ISO 5752, EN 558, DIN 3202, MSS SP-67, API 609 |
Installation length, envelope space compatibility |
|
Actuator Mounting Interface |
ISO 5211 |
Top flange dimensions, drive stem connection |
|
Quality Management System |
ISO 9001 |
Audit tracking, manufacturing control (Not a product spec) |
Design standards define valve construction, while testing standards govern pressure integrity and leakage rates.
Quality Management vs. Product Certification
ISO 9001 applies exclusively to the manufacturer's quality management system. It does not certify that a specific valve complies with API or EN product standards.
Supplier Verification Points
Certificate Registration Number and issuing Accreditation Body
Certified Scope of Manufacturing
Certificate Issue and Expiry Dates
Quality Controls and Technical Documentation
Key Inspection Requirements
Material Verification: Material Test Reports (MTRs / EN 10204 3.1) and heat number traceability.
Dimensional Checks: Critical body, flange, stem, and face-to-face measurements.
Pressure Testing: Calibrated shell and seat tests per API 598 or ISO 5208.
Standard Documentation Package
General Arrangement (GA) and Dimensional Drawings
Material Test Certificates (MTC / EN 10204 3.1 or 3.2)
Certified Pressure Test Reports
Installation, Operation, and Maintenance (IOM) Manuals
Pre-Ordering Verification Checklist
|
Parameter Category |
Required Engineering Input Data |
|
Core Identifiers |
Valve type, body configuration, and model number |
|
Sizing & Pressure |
Nominal Size (DN / NPS) and Pressure Class (PN / Class / CWP) |
|
Pipeline Interface |
Flange standard, drilling profile, and face-to-face series |
|
Operating Conditions |
Flow medium, working temperature, and maximum operating pressure |
|
Construction Materials |
Body, disc, stem, and seat material grades |
|
Compliance & Records |
Designated test standard, leakage class, and document package |