Certifications & Quality Standards
Every valve we supply is manufactured and tested to internationally recognised standards. This page details the certifications, testing protocols, and documentation we provide — so your procurement team, inspection department, and end-users have complete confidence in every order.
8+
International Standards
100%
Hydrostatic Tested
EN 10204
3.1 / 3.2 MTCs
TPI
SGS / BV / TÜV Ready
Standards We Supply To
API 6D
American Petroleum Institute
API 6D — Specification for Pipeline and Piping Valves
Applies to: Ball valves, gate valves, check valves, plug valves for pipeline and piping service
- Full bore and reduced bore piggable designs
- Double block and bleed (DBB) configuration
- Fire-safe design per API 607
- Hydrostatic shell and seat testing at 1.5× rated pressure
- Low-emission packing per ISO 15848
API 609
American Petroleum Institute
API 609 — Butterfly Valves: Double-Flanged, Lug and Wafer Type
Applies to: Butterfly valves Category A (concentric) and Category B (high-performance / offset)
- Category A: rubber-seated concentric for general service
- Category B: double/triple offset for bidirectional, high-pressure, fire-safe service
- Fire-safe design per API 607
- Shell, seat, and operational torque testing
- Bi-directional zero leakage for Category B
ASME B16.34
American Society of Mechanical Engineers
ASME B16.34 — Valves: Flanged, Threaded and Welding End
Applies to: All pressure-containing valves — pressure-temperature ratings from Class 150 to Class 4500
- Standardised pressure-temperature ratings per material group
- Shell hydrostatic test at 1.5× allowable pressure
- Backseat test and low-pressure seat test
- Minimum wall thickness and dimensional requirements
- Material certification to ASTM standards
ISO 9001:2015
International Organization for Standardization
ISO 9001:2015 — Quality Management Systems
Applies to: All products and services — governs quality processes from procurement to delivery
- Documented quality management system
- Supplier qualification and incoming inspection
- In-process and final inspection records
- Calibrated test equipment (traceable to national standards)
- Corrective action and continuous improvement
NACE MR0175 / ISO 15156
National Association of Corrosion Engineers
NACE MR0175 / ISO 15156 — Materials for H₂S Service
Applies to: Valves for sour service containing H₂S — upstream oil and gas, wellheads, pipelines
- Material hardness limits (max HRC 22 for carbon steel)
- Approved alloy materials resistant to sulfide stress cracking (SSC)
- Heat treatment requirements for forgings and castings
- Material qualification test reports (MTR) mandatory
- Applicable to all pressure-containing and pressure-controlling parts
PED 2014/68/EU
European Union Directive
PED 2014/68/EU — Pressure Equipment Directive
Applies to: Valves supplied to the European market — CE marking required for Category II, III, IV
- Risk assessment per Essential Safety Requirements (ESR)
- Conformity assessment by Notified Body (NB) for higher categories
- CE marking with NB number on nameplate
- Declaration of Conformity (DoC) issued per order
- Technical documentation retained for 10 years
API 607
American Petroleum Institute
API 607 — Fire Test for Quarter-Turn Valves and Valves Equipped with Nonmetallic Seats
Applies to: Fire-safe design qualification for ball valves, butterfly valves, and plug valves
- Valve subjected to flame at 760–870°C for 30 minutes
- Leakage through seat and body measured during and after fire
- Valve must remain operable after fire test
- Certification applies to the valve model and size range tested
- Required for all valves in hydrocarbon service (API 6D, API 609)
ISO 15848
International Organization for Standardization
ISO 15848 — Industrial Valves: Measurement, Test and Qualification Procedures for Fugitive Emissions
Applies to: Valve stem seal (packing) and body joint (bonnet) fugitive emission testing
- Leakage classes: A (< 50 ppm), B (< 100 ppm), C (< 500 ppm)
- Thermal cycle and mechanical endurance testing
- Helium leak detection method
- Required for LDAR-compliant facilities and environmental permits
- Commonly specified in refineries, chemical plants, and LNG terminals
Testing Protocols
All valves undergo mandatory testing before dispatch. Additional tests (NDE, PMI, fugitive emission) are available per project requirements or purchase order specification.
Hydrostatic Shell Test
1.5× rated pressure for minimum 1 minute
ASME B16.34 / API 6D / EN 12266
Verifies structural integrity of pressure-containing body, bonnet, and end connections under pressure.
Low-Pressure Seat Test
3.5–7 bar (50–100 psi) air or nitrogen
API 6D / EN 12266
Detects seat leakage at low differential pressure — identifies soft-seat damage not visible at high pressure.
High-Pressure Seat Test
1.1× rated pressure
API 6D / ASME B16.34
Confirms seat sealing at rated operating pressure. Required for all metal-seated and fire-safe valves.
Backseat Test
1.1× rated pressure with packing gland loose
ASME B16.34 / API 600
Verifies the integrity of the backseat on rising-stem gate and globe valves — allows packing replacement under pressure.
Torque / Operational Test
Measured at rated differential pressure
API 609 / EN 12266
Confirms valve opens and closes within actuator design torque. Critical for actuated valve sizing and SIL compliance.
NDT — Radiography (RT)
Per ASME Sec V / EN 12223
ASTM E94 / ISO 5579
X-ray inspection of castings to detect internal porosity, shrinkage, and inclusions invisible to surface inspection.
NDT — Magnetic Particle (MPT)
Per ASME Sec V / EN 1290
ASTM E709 / ISO 9934
Detects surface and near-surface cracks in ferromagnetic materials — applied to critical forged and cast components.
PMI — Positive Material Identification
XRF analyzer, 100% check on exotic alloys
Customer specification
Verifies alloy composition matches material certificate. Mandatory for SS 316, Duplex, Inconel, Hastelloy components.
Documentation Package
Our standard documentation package covers all mandatory inspection and test records. Additional documents can be specified in the purchase order.
Material Test Reports (MTR / MTC)
ASTM A370, EN 10204 3.1 or 3.2 material certificates for all pressure-retaining parts.
Dimensional Inspection Report
Face-to-face, end-to-end, bore diameter, flange drilling checked against ASME B16.10, B16.5, B16.47.
Hydrostatic Test Report
Test pressure, duration, acceptance criteria, and results for shell and seat tests per API / ASME.
Coating / Paint Inspection Report
Dry film thickness (DFT) per specified coating system (e.g. primer + epoxy, 150–300 microns DFT).
Third-Party Inspection Release Note
TPI / TPA release by SGS, Bureau Veritas, TÜVR, Lloyds Register or nominated inspector.
Declaration of Conformity (CE / PED)
CE conformity declaration for valves supplied to European projects under PED 2014/68/EU.
NACE Compliance Statement
Confirmation that all materials and heat treatments comply with NACE MR0175 / ISO 15156 for sour service.
Fugitive Emission Test Certificate
ISO 15848 or TA-Luft test certificate for low-emission packing qualification.
Common Questions
What certifications do your valves carry?
Our valves are supplied to API 6D, API 609, ASME B16.34, and ISO 9001:2015 standards. For sour service we comply with NACE MR0175 / ISO 15156. Valves for European projects carry CE marking under PED 2014/68/EU. Fire-safe designs are qualified per API 607.
Do you provide EN 10204 3.1 or 3.2 material certificates?
Yes. EN 10204 3.1 mill certificates are standard with every order. 3.2 certificates (inspector-witnessed at the material mill) are available on request and typically specified for critical or high-pressure Class 600+ applications.
Can you arrange third-party inspection (TPI) before shipment?
Yes. We support TPI by SGS, Bureau Veritas, TÜV Rheinland, Lloyds Register, or any nominated agency. We prepare inspection and test plans (ITP) per project requirements. Valves are not dispatched without TPI release note.
What is the difference between ASME B16.34 and API 6D?
ASME B16.34 defines pressure-temperature ratings, dimensions, and testing for all valve types. API 6D is pipeline-specific — it references ASME B16.34 but adds requirements for piggability, double block and bleed, fire-safe qualification (API 607), and extended testing. API 6D valves always comply with ASME B16.34.