Hydraulic PRV Safety Rating

[KTEvans]

Have a 5k psi rated hydraulic pump and someone wants to put an SMC compact hydraulic cylinder on this circuit that is only rated for proof pressure at 3480.
Process pressure is only 1800 psi
Can I use a PRV and set it at 2000 PSI?
How do I know if the PRV is safety rated to protect the cylinder from a potential 5k psi event?
What standard governs this?
How should the PRV be stamped and approved for this type of use?

Thank you

 

[hydtools]

See

https://www.sunhydraulics.com/about/highlights/cetüv-certified-pressure-relief-valves

Ted

 

[KTEvans]

Thanks Ted
Is there a US Equivalent of 2014/68/EU (PED)?

 

[TimSchrader2]

Hello Sun has lots of data sheets online. We normally use the relief valve as the emergency 'dump' and another reducing valve to regulate pressure to the component. PRV can stand for either one. Some simple systems use the relief as the reducing valve. If you study the curves there is probally a cross over of performance.

 

[KTEvans]

Thanks Tim