SKE-Y Series High-Frequency Dual Scotch-Yoke Actuator

Product Overview

The SKE-Y Series is a compact, high-frequency, dual scotch-yoke pneumatic actuator suited for valves requiring high breakaway or high end-of-stroke torque. Available in double-acting and spring-return configurations, with a wide range of options and accessories. Its high-pressure-resistant hard-anodized aluminum-alloy cylinder and efficient design deliver high reliability with low air consumption. Unlike bulky traditional large scotch-yoke actuators typically used for heavy-duty piping, the SKE-Y series has been compactly redesigned in both appearance and connection dimensions — its physical size and valve-mounting interface are fully identical to standard rack-and-pinion actuators, achieving a true "drop-in upgrade and parallel replacement."SKE-Y series is well suited to extreme operating conditions with strict weight and installation-space constraints, such as skid-mounted equipment, vessels, and offshore platforms.

Why Choose This Product

• Seamless Drop-In Replacement: SKE-Y series is fully identical to conventional AT rack-and-pinion actuators in port dimensions, NAMUR slot, and ISO bottom flange dimensions, allowing technicians to perform an "in-place upgrade and parallel replacement" on valves currently using rack-and-pinion actuators, without taking the valve offline.

• Outstanding Lifespan and Stability: Equipped with a premium rectangular spring that has undergone over a million fatigue-test cycles, with a spring-force decay rate of less than 3%, giving an overall service life of up to 1.5 million cycles.

• Pneumatic Efficiency: While delivering the same valve opening/closing torque, it is smaller in size and reduces air consumption by 50%, giving customers a highly intuitive, low-carbon cost-reduction return on investment.

Core Advantages and Features:

Unfazed by High-Resistance, Demanding Conditions

Compared to traditional rack-and-pinion actuators, it delivers higher rated torque at the critical end-of-stroke positions during valve opening/closing. Key load-bearing components in the cylinder are upgraded to NM400 high-strength wear-resistant steel and GCr15 bearing-steel pins, fundamentally eliminating the risk of mechanical failure from momentary overload under demanding conditions such as hard seating and high pressure differentials, ensuring foolproof emergency shutoff.

Extreme Fatigue Resistance

The internal premium rectangular spring has undergone over a million high-frequency fatigue-test cycles, with a spring-force decay rate of less than 3%, giving an overall operating life of up to 1.505 million cycles, greatly reducing downtime and maintenance costs for process piping with frequent switching. For harsh chemical corrosion and extreme temperatures, the dynamic seals are fully upgraded to FKM (fluoroelastomer) O-rings (withstanding temperatures up to +150°C).

Compact, Seamless Drop-In Replacement

Overcomes the space limitations of traditional large scotch-yoke actuators, which are bulky and unable to fit small- to medium-sized pipelines.SKE-Y series has undergone a disruptive, compact redesign of its external physical dimensions, NAMUR standard slot, and ISO bottom flange, achieving 100% seamless, parallel interchangeability with conventional AT rack-and-pinion actuators.

50% Energy Savings and Ultra-Low Carbon Footprint

While delivering equal or higher valve opening/closing torque, the unique variable-torque output characteristic of the dual scotch-yoke sliding-pin mechanism significantly reduces the overall physical size of the cylinder, cutting gas consumption by 50% compared to a rack-and-pinion actuator of equivalent torque.

Technical Specifications

SKE-Y Product Configuration Options