Parker SCLV Manual De Instrucciones página 53

Design and Function
Function
The hydraulic tester consists of the flow meter and pressure loading valve functional sec-
tions.
Flow Meter Functional Section
The turbine wheel is driven by the flow of fluid and set into rotation. The speed at which
the turbine wheel rotates is proportional to the flow rate of the fluid. The rotational speed
of the turbine wheel is measured by means of a pickup. The integrated flow straighteners
eliminate any disruptive flow swirl and enable flow measurement in both directions.
Pressure Loading Valve Functional Section
The blow-out disks are inside the poppet valve. The poppet valve is moved in and out of
a flow bore via a threaded shaft. Only low actuating forces are required, regardless of the
direction of flow. In the event of overpressure, the replaceable blow-out disks burst so that
the oil can be fed back at a low pressure. Blow-out disks are available for pressure ranges
up to 480 bar and serve to protect the hydraulic tester.
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