FIELD: mechanics.
SUBSTANCE: invention relates to protective hydrovalves with electrical control and is provided for protection of volumetric hydraulic apparatus gainst pressure, exceeding specified, and against remote unloading it from pressure. Protective hydrovalve with electrical control contains protective hydrovalve of indirect action, protective hydrovalve with regulation of required pressure by means of screw, electromagnetic valve and two throttles. Throttles are connected by hydraulic channels. The first throttle is installed on inlet of electromagnetic valve on feeding channel. The second throttle is installed on inlet of electromagnetic valve on control channel for protective valve of indirect action. Control channel is approached to control cavity of protective valve of indirect action.
EFFECT: invention is directed to reliability improvement of hydrovalve operation.
1 dwg
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