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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92

Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92
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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 1

SERVO VALVES PILOT OPERATED FLOW CONTROL VALVE WITH ANALOG INTERFACE 72 SERIES ISO 10372-06-05-0-92 HIGH PERFORMANCE, TWO-STAGE DESIGN PROVIDING FLOW CONTROL IN A SIMPLE, DEPENDABLE, LONG-LIFE DESIGN WHAT MOVES YOUR WORLD

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 2

Moog 72 Series Flow Control Servo Valves Whenever the highest levels of motion control performance and design flexibility are required, you'll find Moog expertise at work. Through collaboration, creativity and world-class technological solutions, we help you overcome your toughest engineering obstacles. Enhance your machine's performance. And help take your thinking further than you ever thought possible. TECHNICAL DATA General, Hydraulic, Static and Dynamic 6 Null Adjust Instructions 9 Hole Pattern for Mounting Surface 10 Null Flow Adjustment 11 Flow Calculation and Null Cut Options 12...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 3

Moog 72 Series Flow Control Servo Valves PRODUCT OVERVIEW The 72 Series flow control servo valves are throttle valves for 3 and preferably 4-way applications. They are a high performance, 2-stage design that covers the range of rated flows from 95 to 225 l/min (25 to 60 gpm) at 35 bar (500 psi) valve pressure drop per spool land. The output stage is a closed center, four-way sliding spool. The pilot stage is a symmetrical double-nozzle and flapper, driven by a double air gap, dry torque motor. Mechanical feedback of spool position is provid d by a e cantilever spring. The valve design is...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 4

Moog 72 Series Flow Control Servo Valves FEATURES AND BENEFITS The 72 Series is part of Moog’s family of Mechanical Feedback Servo Valves. This is proven technology that performs reliably in machines where high performance, stability and accuracy are required. Moog’s Mechanical Feedback Valves are designed to provide high reliability and long service life. Enables high machine performance, faster cycle times and greater accuracy - all resulting in higher productivity 100% factory tested to ensure critical specification performance Ensures smooth and easy startup, reduces downtime and...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 5

Moog 72 Series Flow Control Servo Valves DESCRIPTION OF OPERATION The 72 Series Flow Control Servo Valve consists of a polarized electrical torque motor and two stages of hydraulic power amplification. The motor armature extends into the air gaps of the magnetic flux circuit and is supported in this position by a flexure tube. The flexure tube acts as a seal between the electromagnetic and hydraulic sections of the valve. The 2 motor coils surround the armature, one on each side of the flexure tube. The second stage is a conventional four-way spool design in which output flow from the...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 6

TECHNICAL DATA Moog 72 Series Flow Control Servo Valves 72 SERIES SERVO VALVES General Technical Data Valve design 2-stage, with spool and bushing and dry torque motor Pilot stage Nozzle Flapper Standard Dynamics Mounting pattern Installation position Any orientation, fixed or movable Storage temperature range Ambient temperature range Vibration resistance Shock resistance Seal material Fluorocarbon (FKM) 85 SHORE Others upon request Hydraulic Data Maximum operating pressure to ports P, T, A, B Rated flow at pN 35 bar/spool land (500 psi/spool land) 95 l/min (25 gpm) 150 l/min (40 gpm) 225...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 7

TECHNICAL DATA Moog 72 Series Flow Control Servo Valves 96 l/min (25 gpm) Plot 1 @ 210 bar (3,000 psi) Plot 2 @ 70 bar (1,000 psi) 96 l/min (25 gpm) Plot 1 & 3 = ±40% rated signal (solid) Plot 2 & 4 = ±100% rated signal (dash) Amplitude Ratio (Decibels) Stroke (% of Rated Signal) 154 l/min (40 gpm) Plot 1 & 3 = ±40% rated signal (solid) Plot 2 & 4 = ±100% rated signal (dash) Amplitude Ratio (Decibels) Stroke (% of Rated Signal) 154 l/min (40 gpm) Plot 1 @ 210 bar (3,000 psi) Plot 2 @ 70 bar (1,000 psi) 231 l/min (60 gpm) Plot 1 @ 210 bar (3,000 psi) Plot 2 @ 70 bar (1,000 psi) Amplitude...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 8

TECHNICAL DATA Moog 72 Series Flow Control Servo Valves ELECTRICAL DATA Rated current and coil resistance A variety of coils are available for 72 Series Servo Valves, which offer a wide choice of rated currents. Coil impedance Inductance is determined under pressurized operating conditions and is greatly influenced by back electromagnetic forces of the torque motor. These effects vary with most operating conditions, and vary greatly with signal frequencies above 100Hz. The apparent coil inductance values given are determined at 50 Hz. The resistance and inductance of standard coils are...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 9

TECHNICAL DATA Moog 72 Series Flow Control Servo Valves INSTALLATION DRAWINGS AND NULL ADJUST INSTRUCTIONS 93.7 (3.69) 73.02 (2.875) Typical Wiring Schematic Typical wiring schematic Location pin (refer to section Hole Pattern for position) Filter 4X Ø 10.31 mm (0.406 in) thru Mechanical Null Adjust screw (requires 3/8” wrench and 3/32” hex key) Optional Magnetic Null Adjust Connector mates with MS3106-14S-2S Fluid: Industrial hydraulic fluid per DIN 51524 parts 1 to 3 and ISO 11158, maintained to ISO 4406 Code 17/14/11 recommended. Viscosity 10 to 85 mm2/s (cSt) at 38 °C (60 to 300 SUS at...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 10

TECHNICAL DATA Moog 72 Series Flow Control Servo Valves 72 SERIES HOLE PATTERN FOR MOUNTING SURFACE Notes 1. Surface: ISO 10372-06-05-0-92 Surface to which the valve is mounted requires flatness of 0.05 mm (0.002 in) over 100 mm (3.94 in) and an average finish Ra better than 0.8 µm (0.000032 in). 2. Ports: For maximum flow the ports P, T, A, and B must be designed with diameters of 18 mm (0.688 in). 14.23 mm (0.562 in) Ø counter-bored 17.65 mm (0.695 in) inside Ø by 22.23 mm (0.875 in) outside Ø 3. Recommended Seals: 90 durometer that is compatible with the hydraulic fluid. P, T, A, and B:...

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Pilot operated flow control valve with analog interface - 72 Series - ISO 10372-06-05-0-92 - 11

Moog 72 Series Flow Control Servo Valves NULL FLOW ADJUSTMENT It is often desirable to adjust the null flow of a servo valve independently of other system parameters. We provide two means to accomplish this; using a mechanical adjustment on the side of the valve body or an (optional) magnetic adjustment on the top of the torque motor cover. Valves with mechanical null adjustment allow for at least ±10% adjustment of null flow. The mechanical null adjustment is an eccentric bushing retainer pin, located above the tank port designation on the valve body, which if rotated provides control of...

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