Pressure Relief Valve Module

The Pressure Relief Valve Module is available for fitting to the underside of the iVP manifold for NG3, NG6 and Torque Control Modules. The complete assembly for the NG3 and NG6 version comprises a machined and hard anodised aluminium block with cavities for 4 x pressure relief valves (2 per bi-directional valve function). The complete assembly for the Torque Control Module accommodates only 2 x pressure relief valves for the single NG6 directional valve function. Fathom Systems offer SUN Hydraulics pressure relief valves of type RDBA-LWN with Titanium adjusting spindles. This module is commonly used in conjunction with functions that require a degree of hydraulic safety protection in the event of an over-pressure or mishap during an operation which could be to the detriment of the equipment being used. An example of this is a manipulator arm where certain functions such as shoulder and elbow have sandwich mount PO check valves fitted to the underside of the directional control valve and in the event of the arm taking an unexpected impact, the pressure relief valve, also referred to as the pressure safety valve, will absorb this impact hydraulically.