English to Spanish Tech/Engineering Engineering (general) surge accumulator

Me encuentro con este término en el siguiente contexto:

Fuel filter pre-installation checklist
If system uses check valves, long hoses, hose reels, and/or excessive piping, a surge accumulator or relief valve is installed. Without a surge accumulator or relief valve, thermal expansion, fluid hammer, and trapped fuel when winding a hose reel can cause filters to leak and/or rupture.

Aguardo su ayuda.

Desde ya muchas gracias.