Atchley Hydraulics

Atchley Hydraulic Servo Valves from Yshydraulic

At Yshydraulic, we stock a wide selection of Atchley servo valves. If you don’t see the exact model you’re looking for, or if you need reliable hydraulic repair services for Atchley or any other brand, our team is here to help.

Keeping Atchley hydraulics customers operating without interruption—day and night—is what we do best.

Atchley Hydraulic Repairs & Replacement Options

Whether you need new components or service for existing ones, Yshydraulic offers both supply and repair solutions. Before investing in a brand-new unit, consider that many Atchley servo valves can be successfully repaired and restored to peak performance. All Atchley repairs, along with every other hydraulic component we service, are backed by our two-year warranty, guaranteeing quality and dependability.

For customers looking to save costs, we also provide remanufactured and aftermarket Atchley hydraulic units. These options deliver reliable performance while costing significantly less than brand-new equipment. To make your decision easier, we provide free quotes so you can compare the cost of new, repaired, and remanufactured Atchley hydraulic products.

A Brief History of Atchley Hydraulics

The name Raymond Atchley is closely associated with innovation in control systems engineering. As the founder of Atchley Controls, he pioneered advancements in hydraulic technology, most notably the Jet-Pipe servo valve. First introduced in 1957, this groundbreaking design transformed fluid control in both hydraulic and pneumatic systems, offering unmatched precision and reliability.

Atchley’s contributions to engineering are widely celebrated, and his legacy continues to influence modern hydraulic control systems. His work not only shaped the development of servo valve technology but also set new standards for accuracy and performance in the industry.

Atchley Servo Valves – Features & Applications

Atchley servo valves are designed with a two-stage proportional flow control system, featuring a Jet Pipe First Stage that includes a torque motor, jet pipe, and receiver. The second stage integrates a spool and sleeve assembly, delivering precise electro-hydraulic control of position, speed, pressure, and force.

These valves are particularly suited for medium dynamic response applications and are widely used in gas and steam turbines. Industries that rely on Atchley servo valves include metalworking, wood processing, paper production, and plastics manufacturing. Known for their precision, they are an excellent choice for closed-loop control systems that demand accuracy, repeatability, and stable performance.

Technical Highlights:

  • Rated pressure: up to 350 bar / 5,000 psi

  • Rated flow: up to 151 LPM / 40 GPM

  • Functions: position, speed, and pressure control

  • Sizes: SM4/10–40, SX4/20

Commonly Stocked Atchley Servo Valve Models

At Yshydraulic, we regularly carry remanufactured or aftermarket models, including:
200-171, 206-131, 206-139, 207-101, 207-105, 207-273, 207-278, 208A-169, 209-122, 211-232, 211A-883, 215-214.