{"product_id":"moog-j761-003a-electrohydraulic-servo-valve","title":"MOOG J761-003A Electrohydraulic Servo Valve","description":"\u003ch3\u003e\u003cstrong\u003eTechnical Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-003A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance, two-stage electrohydraulic servo valve (EHSV) from MOOG’s renowned 761 series. This pilot-operated 4-way valve is engineered to transform low-power electrical analog signals into precise, high-response hydraulic flow. Utilizing a frictionless nozzle-flapper pilot stage, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-003A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoffers exceptional dynamic characteristics and low hysteresis, making it a critical component for closed-loop control systems. It is extensively utilized in applications demanding rapid positioning and high-frequency force modulation, such as flight simulators, industrial die-casting machinery, and high-speed injection molding equipment.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe following parameters define the operational envelope and interface requirements for the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-003A\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 Controls\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-003A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(761 Series)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eValve Architecture\u003c\/strong\u003e: 2-stage, 4-way Throttle Valve\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlow Capacity\u003c\/strong\u003e: 7.6 L\/min (2.0 GPM) @ 35 bar (500 psi) valve drop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Pressure\u003c\/strong\u003e: Operational up to 315 bar (4568 psi)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e: 150 Hz at -3 dB (90° phase shift)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eControl Signal\u003c\/strong\u003e: ±10 mA Analog Current (Differential)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e: ±15 VDC (Standard for associated servo amplifiers)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Interface\u003c\/strong\u003e: 6-pin MIL-C-5015 connector (Style MS3102E14S-2S)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Pattern\u003c\/strong\u003e: ISO 10372 Size 04 (Subplate mounting)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFluid Cleanliness\u003c\/strong\u003e: 10 μm absolute filtration required (ISO 4406 14\/11 or better)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSeal Material\u003c\/strong\u003e: Viton (FPM) as standard for compatibility with mineral oils\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUnit Weight\u003c\/strong\u003e: Approximately 1.6 kg (3.5 lbs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInternal Dynamics and Control Logic\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eJ761-003A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoperates on a mechanical feedback principle. When an electrical current is applied to the torque motor coils, it creates a magnetic force that deflects the flapper between two nozzles. This deflection creates a pressure differential across the ends of the main spool, causing it to shift. As the spool moves, a feedback wire attached to the flapper creates a restoring torque, centering the flapper when the spool reaches the position proportional to the input signal. This \"force-balance\" logic ensures that the hydraulic flow output is a linear and highly repeatable reflection of the electrical command.\u003c\/p\u003e","brand":"MOOG","offers":[{"title":"Default Title","offer_id":44092580528227,"sku":"J761-003A","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\/moog-j761-003a-electrohydraulic-servo-valve","provider":"Precise Module Ltd.","version":"1.0","type":"link"}