Product Introduction: A compact direct-acting servo valve from Moog’s D633 series, optimized for low-flow, high-precision applications. Its miniature design makes it ideal for systems where space is extremely limited, such as robotics and portable equipment. Despite its small size, it maintains the high performance and reliability associated with Moog’s servo valve technology.
Technical Specifications: Rated flow is 5 l/min (1.3 gpm) at 35 bar (500 psi) pressure drop. Maximum operating pressure is 210 bar (3000 psi). The valve measures 40 mm × 30 mm × 25 mm (1.6″ × 1.2″ × 1.0″) and weighs 80 grams (2.8 oz). Operating voltage is 12 VDC with a current draw of ±150 mA. Frequency response is ≥300 Hz, ensuring ultra-fast signal tracking.
Functional Features: Ultra-compact design enables integration into micro-hydraulic systems, such as surgical robots and lab automation equipment. Low power consumption makes it suitable for battery-powered devices. Direct actuation eliminates pilot oil requirements, reducing system complexity. High resolution (≤0.1% of full scale) allows for precise control in micro-positioning applications.
Application Scenarios: Used in robotic surgical tools, controlling fine movements of laparoscopic instruments with sub-millimeter accuracy. Integral to portable testing equipment, regulating pressure and flow in field-deployed hydraulic systems. Applied in aerospace miniature actuators, such as those used in aircraft wing flap control for small unmanned aerial vehicles (UAVs).
