{"product_id":"m00g-j761-004a-servo-valve","title":"M00G J761-004A Servo Valve","description":"\u003ch3\u003e\u003cstrong\u003eTechnical Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-004A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-capacity, two-stage electrohydraulic servo valve (EHSV) engineered by MOOG for rigorous industrial motion control. This pilot-operated unit utilizes a sophisticated mechanical feedback mechanism to translate analog electrical commands into high-volume hydraulic flow with exceptional linearity. Designed to thrive in high-cycle environments, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-004A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efeatures a precision-ground 4-land sliding spool that ensures rapid response times even under extreme pressure. With integrated resistance to 30g shock and vibration, this valve is a primary choice for heavy-duty metal forming, power generation turbine bypass, and large-scale material testing rigs where sub-millimeter positioning accuracy is a functional necessity.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe following data defines the high-pressure performance and structural integrity of the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-004A\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e: MOOG Inc.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Identification\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-004A\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eValve Architecture\u003c\/strong\u003e: 2-Stage Pilot-Operated with Mechanical Feedback\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlow Capacity\u003c\/strong\u003e: 30 to 60 GPM (113 to 226 L\/min) at 70 bar (1000 psi)\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\Delta p$\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum System Pressure\u003c\/strong\u003e: 350 bar (5000 psi)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInternal Spool Design\u003c\/strong\u003e: Precision-ground 4-land sliding spool\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHysteresis (Typical)\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\le$\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e3.0% of rated signal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThreshold (Typical)\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\le$\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e0.5% of rated signal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNull Shift (at\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\Delta T$\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e= 55 K)\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\le$\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e2.0%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRated Flow Deviation\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$\\pm$\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e10%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSealing Technology\u003c\/strong\u003e: Fluorocarbon (FKM) 85 SHORE D (Viton equivalent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFluid Compatibility\u003c\/strong\u003e: Mineral oils per DIN 51524 and ISO 11158\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnvironmental Ratings\u003c\/strong\u003e:\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVibration\u003c\/strong\u003e: 30g (3-axis, 10 Hz to 2 kHz)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShock\u003c\/strong\u003e: 30g (3-axis)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e: MOOG standard mounting and analog electrical connection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance Dynamics and Control Logic\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-004A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoperates via a force-balance feedback loop between the pilot and power stages. An electrical current applied to the torque motor creates a differential pressure that shifts the main spool. A stainless steel feedback wire links the main spool back to the pilot flapper; as the spool reaches its commanded position, the wire generates a mechanical counter-torque that re-centers the flapper. This \"closed-loop-in-hardware\" logic minimizes thermal drift and ensures the valve maintains a stable null position. The FKM 85 Shore D seals provide superior chemical resistance and prevent extrusion under the high-frequency pressure spikes typical of 350 bar systems.\u003c\/p\u003e","brand":"MOOG","offers":[{"title":"Default Title","offer_id":44092685287523,"sku":"J761-004A","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/3357b00e7d83c576d8aca2bd50d1bd25_4c2f21f1-0032-4516-b495-4131e26f8c3d.png?v=1774948648","url":"https:\/\/precisemodule.com\/products\/m00g-j761-004a-servo-valve","provider":"Precise Module Ltd.","version":"1.0","type":"link"}