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Masoneilan Type 51/52/53 Pneumatic Piston Actuators

Masoneilan Type 51/52/53 Pneumatic Piston Actuators meet requirements that exceed the typical capabilities of pneumatic spring diaphragm actuators. This Masoneilan Type 51/52/53 Pneumatic Piston Actuators is available in three different configurations:
Type 51: Double-acting cylinder (no springs), available with integral volume tank.
Type 52: Single acting cylinder, air to extend (extend stem) spring return
Type 53: Single acting cylinder, air to retract (retract stem) spring return

Product Features

Masoneilan Type 51/52/53 Pneumatic Piston Actuators have following features:
Rugged Construction

Heavy internal guiding and support provides proper alignment of the dynamic components, delivering a rugged construction suited for the most demanding valve actuation requirements.

Application Versatility of Masoneilan Type 51/52/53 Pneumatic Piston Actuators

Standard construction options include double-acting without springs, as well as heavy mechanical spring-return for both air-to-extend and air-to-retract operation. Air volume in the cylinder is reduced in each design, providing high dynamic stiffness and improving speed of response.

Safety and Ease of Assembly

The standard spring-return design includes separate spring cartridge subassemblies, which allow for safe pre-compression of the springs prior to final assembly into the actuator cylinder. The spring cartridge subassembly is also fully field reversible, which helps to reduce plant inventory.

Long Life Cycle

Heavy guiding of the actuator stem results in excellent mechanical alignment of the key components, thus minimizing dynamic seal and sliding surface wear. This also helps to reduce overall operating friction, which enhances throttling control performance.

Masoneilan type 515253 pneumatic piston actuators 6

Baker Hughes has highly skilled service engineers available for start-up, maintenance and repair of our actuators and component parts. In addition,a regularly scheduled training program is conducted at the Training Center to train customer service and instrumentation personnel in the operation, maintenance and application of our control valves, actuators and instruments. Arrangements for these services can be made through your Baker Hughes representative or sales office. When performing maintenance, use only Masoneilan replacement parts. Parts are available through your local Baker Hughes representative or sales office. When ordering parts, always include Model and Serial Number of the unit being repaired.

Product Parameters

Actuator Thrust (max) Effective
Piston Area
in (mm) N Lb Chamber in2 mm2 in mm inch³
12 12 (305) Single 50960 11456 Upper 113 72800 4 101.6 989 0.0162
Lower 112 72100
16 15 (386) Single 81830 18395 Upper 181 116900 6 152.4 1489 0.0244
Lower 180 116000 12 304.8
20 19 (488) Single 130830 19411 Upper 290 186900 6 152.4 2264 0.0371
Lower 287 185400 12 304.8
24 15 (386) Double 123066 27665 Upper 360 232200 12 304.8
Lower 356 229700
28 19 (488) Double 197266 44345 Upper 577 372200 12 304.8
Lower 573 369700
32 23 (574) Double 256750 57717 Upper 792 513500 12 304.8
Lower 788 508400

Application and After-Sales Service

Applicable Industries of Masoneilan Type 51/52/53 Pneumatic Piston Actuators
Power Generation, Refining,  Petrochemicals, Midstream Oil & Gas, Upstream Oil & Gas.
Key Applications: Steam Turbine Generator, Condenser, Cooling Tower, Reactor Building, Turbine Building, Reactor Facility Grounds & BOP, Steam Turbine, Gas Turbine, Heat Recovery Steam Generator, Balance Of Plant, Distillation, Hydroprocessing Reforming, Cracking, Secondary, Blending, Quenching & Fractioning, Charge Gas Compression, Seperation, Pipeline Integrity, Operations, Dehydration, Refrigeration, Liquifaction, Loading/Shipping, Regasification, Auxillary, Dehydration/Treating, Compression.

After-Sales Service

Online support and Video technical support.


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