Shafer SH-Series Helical Spline Hydraulic Valve Actuator
The Shafer™ SH-Series Helical Spline Hydraulic Valve Actuator by Emerson delivers precise, high-torque, and reliable quarter-turn valve control for demanding industrial and pipeline applications.
The Shafer™ SH-Series Helical Spline Hydraulic Valve Actuator, developed by Emerson, is a heavy-duty, high-performance actuator engineered to provide precise, reliable, and efficient valve control in demanding industrial and pipeline applications. Utilizing the helical spline principle, the SH-Series converts linear hydraulic piston motion into smooth and powerful rotary torque, enabling quarter-turn valve operation with exceptional accuracy and repeatability. Designed for severe service environments, the Shafer SH-Series delivers high torque output, excellent control precision, and long service life—even under extreme pressure, temperature, and vibration conditions. Its compact, balanced design minimizes side loading on valve stems, ensuring consistent operation and reduced maintenance over time. This actuator is ideal for on-off, modulating, and emergency shutdown (ESD) operations. Available in both double-acting and spring-return configurations, it provides fail-safe performance and field-proven reliability across the oil & gas, petrochemical, and power industries.
Technical Specification of Shafer SH-Series Helical Spline Hydraulic Valve Actuator
- Power Source
- Hydraulic
- Product Type
- Hydraulic Actuator
- Certifications
- SIL, CSA, FM, ATEX, IECEx
- Control Type
- On/off, ESD
- Valve Type
- Ball, Plug
Feature of Shafer SH-Series Helical Spline Hydraulic Valve Actuator
-
Type: Helical spline rotary hydraulic valve actuator
-
Operation: Quarter-turn (90° rotation)
-
Design: Converts linear hydraulic motion into rotary torque via helical spline mechanism
-
Configurations: Double-acting and spring-return models available
-
Torque Output: High torque with smooth, precise motion control
-
Construction: Heavy-duty carbon steel or alloy body with corrosion-resistant coating
-
Sealing: Designed for harsh outdoor, subsea, and offshore conditions
-
Mounting: ISO 5211 and custom interface options
-
Control Options: Compatible with manual overrides, position indicators, and ESD systems