Description

The MOOG D136-001-007 is a high-performance jet pipe servo valve engineered for precision hydraulic motion control in mission-critical systems. As part of Moog’s D130 series, this electrohydraulic valve converts low-power electrical signals into proportional high-power fluid flow with exceptional dynamic response. The D136-001-007 features Moog’s patented jet pipe pilot stage technology, delivering superior contamination resistance and fault tolerance compared to conventional nozzle-flapper designs. Its integrated electronics provide temperature-compensated operation across extreme environments, maintaining ±1% null stability during thermal transients. Designed for aerospace, defense, and industrial automation applications, this valve achieves flow rates up to 60 L/min at 70 bar pressure drops with hysteresis below 3%. The MOOG D136-001-007 enables precise control of actuators in fly-by-wire systems, turbine governors, and simulation platforms where reliability and accuracy are paramount. Its corrosion-resistant construction and MIL-STD-810G compliance ensure performance in harsh conditions.

MOOG D136-001-007

Technical Specifications

Main Features and Advantages

Jet Pipe Pilot Technology: Unlike nozzle-flapper valves, the MOOG D136-001-007‘s jet pipe design eliminates small clearance paths where contaminants cause failure. Its pilot stage features a single 200μm orifice – 3x larger than typical alternatives – enabling reliable operation at NAS 1638 Class 8 cleanliness. This reduces maintenance costs by 40% in particle-laden environments like mobile hydraulics.

Enhanced Fault Tolerance: Dual-coil torque motor with continuous health monitoring detects winding degradation before failure. If one coil fails, the valve maintains 70% functionality for graceful shutdown. The hardened spool design prevents stiction after prolonged standby.

Dynamic Performance: Achieves 120Hz frequency response with ±90° phase shift for ultra-precise position control. Symmetrical flow characteristics ensure consistent response in both directions. Integrated dither circuit minimizes friction effects at low velocities.

Environmental Robustness: Hermetically sealed electronics withstand 50g shock and 20g vibration. Temperature-compensated null stability maintains accuracy during rapid thermal cycling. Gold-plated connectors prevent corrosion in salt fog environments per MIL-STD-810G.

Application Field

The MOOG D136-001-007 dominates Aerospace Actuation Systems, controlling primary flight surfaces in commercial/military aircraft where its FAA/EASA certification ensures compliance. In Power Generation, it governs steam turbine emergency stop valves, responding to trip signals in<25ms>

Industrial Automation applications include precision rolling mills for steel/aluminum, where the valve’s 0.1% repeatability maintains micron-level strip thickness tolerances. Test Rig Systems leverage its 120Hz bandwidth for fatigue testing of wind turbine blades and airframe components.

Defense Platforms deploy the D136-001-007 in armored vehicle turret drives and ship rudder controls, utilizing its MIL-SPEC shock/vibration resistance. For Oil & Gas, it positions subsea Christmas tree valves at 3,000m depths, with pressure-balanced construction preventing seawater intrusion.

MOOG D136-001-007

Related Products

MOOG D660: Higher-flow valve (150 L/min) for industrial presses

MOOG D791: Direct-drive servo valve with integrated controller

MOOG G122-829A: Servo amplifier optimized for D136-001-007

MOOG D134-001-003: Compact version for space-constrained installations

MOOG J760-1002: Test bench calibration kit

MOOG S163-615A: Temperature-compensated LVDT for closed-loop control

MOOG K027-119-004: Explosion-proof enclosure kit

MOOG D136-001-008: High-temperature variant (+160°C capability)

Installation and Maintenance

Pre-installation preparation: Verify hydraulic fluid meets Moog’s MPR-02 cleanliness specification (NAS 1638 Class 6/ISO 4406 15/13). Flush piping with 3x system volume before installing the D136-001-007. Ensure mounting surface flatness within 0.05mm to prevent case distortion. Use flexible couplings to isolate valve vibration. Confirm electrical grounding per EN 60204-1.

Maintenance recommendations: Monitor null shift quarterly via test ports. Replace internal 10μm filter annually in continuous operation. Perform stroke test every 2,000 hours to detect spool wear. Record coil impedance trends to predict torque motor degradation. For long-term storage, fill valve cavity with preservative fluid (Moog PN K025-112-007). Never disassemble the jet pipe assembly – return to Moog Service Centers for overhaul.