Scope: Under IEC 61508:2010, Risknowlogy has issued an independent functional safety certificate for BHDT high-pressure valve 1231398. The certificate confirms the valve meets the applicable requirements for use as a final element in safety-instrumented functions.

Valve 1231398 is intended for tight shutoff in high-pressure chemical and petrochemical applications. Its safety function — executed in low-demand mode — is to bring the valve to the closed position on demand and within a defined response time. The valve serves within a final element assembly, combined with an actuator, a solenoid, and the supporting pneumatic supply components.

For the assessment, Risknowlogy used compliance route 1H, reviewing the valve's failure modes, failure rates, and architectural constraints in line with IEC 61508. Valve 1231398 is classified as Type A hardware, reflecting predictable and well-characterised failure behaviour, with a design that builds on an established BHDT concept and a documented record of operation.

Considering the assessed failure data alongside the compliance route, valve 1231398 is suitable for SIL 1 safety functions at HFT = 0 and for SIL 2 safety functions at HFT = 1, in accordance with IEC 61508. The valve is certified individually under number 2628.653.11-1, issued 2026-06-09.

End users, EPCs, system integrators, and asset owners can rely on this certification when integrating valve 1231398 into safety-instrumented functions as part of a compliant functional safety lifecycle. The certificate holds only while the valve design remains unaltered and while application, installation, operation, and maintenance are carried out correctly by the end user. Responsibility for safe integration into the overall safety-instrumented system, for proof testing, and for lifecycle management under IEC 61508 belongs to the end user. The detailed certification basis, conditions of use, and end-user responsibilities are defined in certificate 2628.653.11-1 and the supporting Risknowlogy assessment report 2628.653.16.