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Pilot-Operated Servo Valve With Servojet Pilot Valve D792 Series


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Pilot-Operated Servo Valve With Servojet Pilot Valve D792 Series - 1

Pilot-operated Servo Valve with ServoJet® Pilot Valve (D792 Series) Improved resistance to vibration and contamination The D792 Series has been valued by machine builders for many years for its high dynamics and very high flow capabilities up to 1,000 l/min (250 gpm). Over time our customers expressed a need for this product to offer this same performance even when installed in remote areas with extreme environments, high vibration levels and potential oil contamination levels. Moog is now offering D792 Servo Valves with a ServoJet® pilot valve. This pilot valve was first introduced in 1998 and is known for its proven superior reliability and ruggedness can now withstand in conditions with high vibration and oil contamination. D792 Servo Valves have also a 3-stage valve design that enables: Superior dynamics, low threshold and hysteresis, and excellent stability at null. The ServoJet® pilot valve offers these advantages while adding a more robust design with a tenfold increased minimal clearance for oil flow compared to the previous nozzle flapper design. The result is a a highly robust, high flow valve suitable for even more machine applications. All ServoJet® pilot valves have electrical position feedback (LVDT) to ensure that the effects of wear over the lifetime will not degrade the control performance of the valve. Advantages • Improved vibration resistance • Enhanced contamination resistance • Very high flow rate on small port pattern • High dynamics • Increased machine performance through more valve tuning options, valve diagnostics and faster commissioning • Easy automation when using fieldbus Optional external pilot valve supply and return connections via additional x and y ports in the valve body increase the flexibility of this product based on the hydraulic system design needed. The ServoJet pilot valve has a maximum operating pressure of 350 bar (5,000 psi). • Steel production The digital control electronics provides the opportunity to allow machine builders to optimize the performance of equipment using advanced features of our Digital Control Servo Valves (DCV) and Axis Control Valves (ACV) technologies. • Steam turbines What moves your world • Test equipment • Metal forming and presses

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Pilot-Operated Servo Valve With Servojet Pilot Valve D792 Series - 2

Specifications Technical data Model Valve design Pilot valve Rated flow at ΔpN 35 bar (500 psi)/spool land Step response time for 0 to 100 % stroke Installation position Weight Storage temperature range Ambient temperature range Vibration resistance Shock resistance Hydraulic Data Leakage flow (rate) (≈ zero lap)1) Pilot flow static1) Pilot flow for 100 % step1) Hydraulic fluid D792 3-stage, with standard spool 2-stage ServoJet® D670 400 l/min 630 l/min (106 gpm) (166 gpm) 4 to 6 ms 4 to 6 ms Any 17 kg (37.5 lb) -40 to +80 °C (-40 to +176 °F) -20 to +60 °C (-4 to +140 °F) 30 g, 3 axis, 10...

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