HydraForce, a manufacturer of hydraulic valves and manifolds, is launching its patent-pending electro-proportional boom lock valve, the EHBL, at the CONEXPO-CON/AGG 2023 show in Las Vegas as part of the International Fluid Power Exposition (IFPE).
The HydraForce EHBL features an integral check that protects hydraulic systems in the event of a hose rupture or burst. In most excavators, the hydraulic system incorporates lowering controls that typically employ a pilot-operated proportional poppet valve to control the hydraulic flow between the boom and the main control valve.
With EHBL, HydraForce takes a different approach by controlling pressure rather than flow. The valve has a poppet seat for low leakage and spool-type metering for improved control.
It is internally piloted, thus eliminating the need for additional pilot lines or sources. The pressure control valve has an integrated housing with a built-in check valve providing free reverse flow. The EHBL has a flow rating of 66 gpm (248 lpm) and can accommodate pressures up to 6091 psi (420 bar).
