D Series Linear Pneumatic Diaphragm Actuators

• Application Versatility— Direct Action & Reverse Action in six sizes are available for an extensive variety of applications. Spring ranges, stroke stops, and manual operators are available for nearly any control valve application.
• Excellent Linearity Between Loading Pressure and Stroke — A molded diaphragm travels in a deep diaphragm casing, minimizing area change through the stroke.
• High Thrust Capability — The molded diaphragm and cold stamping case allows high pressure supply and maximum thrust for given diaphragm size.
• Long Service Life — Rugged thick-walled cold stamping case and ductile iron construction provides increased stability, corrosion protection, and protection from deformation should over-pressurization occur.
• Cold Service Application — Enhanced product specification for all sizes of D series diaphragm actuators allow performance to -40oC if required.
• Positive Connections — A split block stem connection provides a solid transfer of motion while allowing easy mounting. The absence of linkages helps to avoid lost motions and inaccurate valve positioning.
• Compact & Light — With the multiple springs and a high air supply pressure, D series are much more compact and light as compared with conventional actuators.

Download PDF