scotch yoke hydraulic pump manufacturer

Scotch Yoke actuators are for automation and operation of quarter-turn valves like Butterfly, Ball and Plug valves as used in various industries like refining, pipeline, offshore, chemical, pharmaceutical, water processing, etc.

Scotch Yoke actuators are available for a wide range of advanced applications. Most well know are the temperature related trim kits that allow High Temperature or Low Temperature operation. Other applications are related special operating media, or fast operating speeds. For many of these advanced applications, dedicated control accessories are available

The Scotch Yoke design provides peak torque at the break and end point of the stroke, ensuring maximum reliability and is available in both symmetric and canted designs to meet specific applicaton requirements.

The SY mechanism is fully contained within housing which is designed and tested against full differential pressure. To minimize cost and weight, actuators have a modular construction. The hydraulic/pneumatic cylinder and the spring cartridge can be connected to the left or to the right side of the housing to fit with the specific fail-safe action.

The MS Series Electro-Hydraulic actuator by PDC LLC is the ideal product for any general service on/off application, with fail safe options available, if desired. Consisting of a self-contained, bi-directional motor driven pump with an integral hydraulic cylinder and mechanical drive modules.

The MS Electro-Hydraulic’s modular design allows you to choose the best combination for your service conditions. Consisting of a mechanical drive, a control box with a choice of optional Feedback and optional Fail-Safe configuration if desired.

As a full-featured, self-contained actuator the general service MS Electro-Hydraulic actuator supplies various input and output capabilities which include:

Paladon Systems was originally founded in 1981 as a job shop, or actuation integrator; it was not until 1999 that Paladon began manufacturing their own Scotch-Yoke actuators. “When we decided to start up our manufacturing operations, we had a well-known designer take over the task of designing the Paladon Actuator, which were created in our Borgonovo Val Tidone, Italy location,” said Brian Crook.

Paladon is a global company with hometown roots. The company builds products in Texas and Italy, while the U.K. office is dedicated to sales, engineering and aftermarket support service. Each facility is able to offer their customers a personal touch that is unique to each location. “We want to make sure our products are delivered on time to our customers, and meet the exact specifications they need,” relayed Crook. “Our Houston, TX facility builds scotch yoke, direct gas, hydraulic and electro-hydraulic, and complete turnkey packages for our customers in the Americas. Our Italy facility manufactures the complete product line, including parts, modules, and complete turnkey packages. The facility in the U.K. focuses on subsea, ASV, and specialty packages.” In all locations, the company builds High Integrity Pressure Protection System (HIPPS) and High Pressure Unit (HPU) packages as well.

Paladon Americas builds many styles of actuators, including the Pneumatic/Hydraulic Scotch-Yoke, Direct Gas Scotch-Yoke, Gas/Oil Scotch-Yoke, Electro-Hydraulic Scotch-Yoke, Self-Contained Hydraulic ESD, HPU and HIPPS packages, Pipeline Monitoring Systems, and Autonomous Solar and Wind Turbine Systems. In addition, the company boasts 80% of their final products are customized to customers’ specific requirements.

In 2016, the Houston facility introduced their new Electro-Hydraulic Actuator and Control System. “We approached our customers, end users and operators, heard their feedback, and created this new system for them. We wanted to address the stigmas attached to most electro-hydraulic systems,” said Crook. “Examples of issues included leaking and difficulty setting the switches that will start and stop the motor.” Paladon was the first to introduce an on-board logic controller on the unit, which eliminates the need to use a limit switch to start/stop the motor. “We are able to provide valuable feedback to a control room, which features a low fluid level alarm, motor run protection, and valve jam/travel alarms. Our goal was to address industry problems, and build a smarter product that will not destroy itself if a single component fails.”

More recently, the company has begun an evolution of the EHYS-Series Electro-Hydraulic Scotch-Yoke actuators to include new features, such as autonomous operation, integrated pipeline monitoring, and solar and/or wind turbined powered with a battery backup. Crook admitted, “We want to bring our product into a class of its own, and so we are raising the bar on features, delivery, and value for customers.”

The SCHY-Series Self-Contained Hydraulic ESD was also recently introduced. “This is a simple hydraulic scotch-yoke, but it does not require power. It uses a hydraulic hand pump to open/close a valve, and we can add in a high/low pressure pilot, solenoid or limitswitch, which makes the unit a completely autonomous shutdown system,” stated Crook.

Traceability is also an important aspect of their operations. Every quote is sent to the customer with an ISA style quote form, a brochure, topworks dimensions, and standards. Every order ships with a serial number and the customer purchase order number (PO#) on the IOM. All electrical units ship with the customer specific wiring diagram. Crook explained, “We also track who built each unit to ensure accountability, quality and consistency. For our electro-hydraulic units, the program logic is serialized and stored on a local server for quick internal access.”