Directional Valves For Excavators

11 July 2018

Walvoil has developed a new directional valve specifically designed for mini and midi hydraulic excavators. The new DPX-HS valve targets machines from 1 to 9 tonnes.

Walvoil said that excavators in that range are typically controlled with load-sensing valves — a solution that better controls the machine and is liked by nonprofessional operators and rental fleets — or open center valves with three fixed pumps, a solution offering more performance in driving sensibility and faster control but requiring higher operator skills. The DPX-HS is designed to combines both technologies in two segments, separated by an intermediate section that works as a compensator.

The valve system works with one variable and one fixed displacement pump, which the company said provides a compact and cost-efficient solution.

The DPX-HS valve is available in three sizes: the DPX050 with a nominal flow rating of 50 L/min (13.2 gpm); the DPX100 at 120 L/min (31.7 gpm); and the DPX160 at 160 L/min (42.2 gpm). All three sizes reach a maximum pressure of 300 bar (4351 psi) at the inlet port, the company said.


Receive the information you need when you need it through our world-leading magazines, newsletters and daily briefings.

Sign up


The trusted reference and buyer’s guide for 83 years

The original “desktop search engine,” guiding nearly 10,000 users in more than 90 countries it is the primary reference for specifications and details on all the components that go into engine systems.

Visit Now

Becky Schultz Vice President of Content Tel: +1 480 408 9774 E-mail: [email protected]
Julian Buckley Editor Tel: +44 (0) 1892 784088 E-mail: [email protected]
Chad Elmore Managing Editor Tel: +1 262 754 4114 E-mail: [email protected]
Simon Kelly Sales Manager Tel: +44 (0) 1892 786 223 E-mail: [email protected]