Standards & Compliance
The standards that govern industrial valves
The EU and international standards a valve is specified, dimensioned, tested and certified to. We supply to these standards and can arrange third-party testing on request. Each section links to a fuller guide and the product ranges it applies to.
EU dimensional & testing standards
European standards that fix the physical and test requirements for valves placed on the EU market. EN 558 sets face-to-face lengths so a valve fits the pipework it replaces, EN 1092 defines flange dimensions and drilling, EN 12266 covers pressure testing, and EN 593 governs metal butterfly valves. Specifying to these keeps a valve interchangeable and inspectable across EU installations.
Pressure ratings: PN, ANSI Class and JIS
The pressure rating fixes what a valve is drilled and rated for. PN (nominal pressure, in bar) is the European system, ANSI Class is the American system used with ASME pipework, and JIS K is the Japanese system. The class that matters for flange matching is the drilling class, which is distinct from the working pressure a valve is rated to. Getting the system and class right avoids mismatched flanges on a mixed installation.
API oil & gas standards
American Petroleum Institute standards for valves in oil, gas and refinery service. API 6D covers pipeline valves, API 600 cast steel gate valves, API 602 compact forged steel valves, and API 6A wellhead equipment. These certify the design, materials and testing expected in hydrocarbon service, and often sit alongside EN requirements on the same project.
AWWA waterworks standards
American Water Works Association standards for valves in potable water and waterworks service. C504 covers rubber-seated butterfly valves, C509 and C515 cover resilient-seated gate valves. They map to EN drinking-water requirements and are specified where a water utility works to AWWA rather than EN.
Materials & test certificates
Material traceability is certified to EN 10204. A 3.1 certificate is issued by the manufacturer and reports the actual test results for the material supplied, a 3.2 adds independent verification by a third party or the buyer inspector. Specify the certificate level your project or code requires so the material can be traced back to its heat and tests.
CE marking and the Pressure Equipment Directive
Pressure equipment placed on the EU market falls under the Pressure Equipment Directive (2014/68/EU). Depending on the fluid group, pressure and size, a valve is either built to sound engineering practice or CE marked to a conformity module. CE marking is the manufacturer declaration that the equipment meets the applicable EU requirements. We confirm the conformity route that applies to your specification at quotation.
Specifying to a standard?
Tell us the standard and we source and quote to it, with third-party testing on request.