SHARPE SPNII

The SHARPE SPNII series is a line of pneumatic valve actuators designed for quarter-turn valves, available in both double-acting and spring-return configurations. These actuators are used to automate on/off or modulating control in industrial piping systems, providing reliable operation in process control applications. The SPNII series is characterized by its extruded aluminum housing, which offers a balance of strength and lightweight construction, and its compatibility with ISO 5211 mounting standards, including F04, F05, F07, and F10 mount types. This standardization allows for direct mounting to a wide range of quarter-turn valves, such as ball and butterfly valves, without the need for additional adaptation. The actuators are available in various sizes, with torque outputs ranging from 89 lb-in to 4,102 lb-in at 80 psi supply pressure, and closing times from 0.2 seconds to 1.4 seconds, depending on the model and configuration. Double-acting models require compressed air to both open and close, while spring-return models use a spring mechanism to return the valve to a fail-safe position upon loss of air pressure. This makes spring-return actuators suitable for applications where fail-safe operation is critical, such as in emergency shutdown systems. The SPNII series is designed for use in a variety of industries, including chemical processing, water treatment, oil and gas, and power generation. 3G Electric supplies the SHARPE SPNII series as part of its portfolio of industrial equipment, offering global logistics and support for procurement specialists, plant engineers, and maintenance managers. With a focus on technical specifications and application requirements, 3G Electric facilitates the selection and sourcing of these actuators to meet specific operational needs. The SPNII series is known for its robust construction and consistent performance, making it a practical choice for automated valve control in demanding environments.

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BrandSHARPE SPNII

CategoryDouble-Acting Valve Actuators

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About SHARPE SPNII

Common Applications

Chemical processing — SHARPE SPNII 125 DA 36mm double-acting actuator for automated on/off control of large quarter-turn valves.
Water treatment — SHARPE SPNII 145 SR 36mm spring-return actuator for fail-safe closure of butterfly valves in filtration systems.
Oil and gas — SHARPE SPNII 085 DA 22mm double-acting actuator for reliable operation of ball valves in pipeline service.
Power generation — SHARPE SPNII 075 DA 22mm double-acting actuator for control of cooling water valves in heat exchangers.
Pharmaceutical — SHARPE SPNII 050 SR 17mm spring-return actuator for fail-safe operation of small quarter-turn valves in batch processes.
Food and beverage — SHARPE SPNII 063 DA 17mm double-acting actuator for automated sanitary valve control in CIP systems.

Frequently asked questions

Common questions about SHARPE SPNII from 3G Electric.

What is the difference between double-acting and spring-return SHARPE SPNII actuators?

Double-acting SHARPE SPNII actuators use compressed air to both open and close the valve, requiring an air supply for each operation. Spring-return models use air to open the valve and a spring to close it (or vice versa) upon loss of air pressure, providing fail-safe operation. The choice depends on whether the application requires the valve to return to a specific position on air failure. Spring-return actuators are often used in safety-critical systems where the valve must close or open automatically during a power or air failure.

What torque range does the SHARPE SPNII series cover?

The SHARPE SPNII series covers a torque range from 89 lb-in to 4,102 lb-in at 80 psi supply pressure. Specific models include the SPNII 050 SR with 89 lb-in, the SPNII 050 DA with 155 lb-in, the SPNII 063 DA with 275 lb-in, the SPNII 075 DA with 559 lb-in, the SPNII 085 DA with 870 lb-in, the SPNII 125 DA with 2,664 lb-in, the SPNII 145 SR with 2,495 lb-in, and the SPNII 145 DA with 4,102 lb-in. This range allows selection based on the valve torque requirements and safety factors.

What ISO mount types are available for SHARPE SPNII actuators?

SHARPE SPNII actuators are available with ISO 5211 mount types including F04, F05, F07, and F10. For example, the SPNII 050 DA 17mm has an F04 mount, the SPNII 063 DA 17mm and SPNII 075 DA 22mm have F05/F07 mounts, and the SPNII 125 DA 36mm and SPNII 145 DA 36mm have F10 mounts. The mount type determines the valve interface size and must match the valve's mounting flange. Adapters may be available for other sizes, but the standard offerings cover common quarter-turn valve sizes.

What are the closing times for SHARPE SPNII actuators?

Closing times for SHARPE SPNII actuators vary by model and size. Smaller models such as the SPNII 050 DA, 063 DA, and 075 DA have closing times of 0.2 seconds. The SPNII 085 DA has a closing time of 0.4 seconds. Larger models like the SPNII 125 DA have a closing time of 1.1 seconds, while the SPNII 145 DA and 145 SR have closing times of 1.4 seconds. These times are typical at 80 psi supply pressure and may vary with air pressure and valve load. Faster closing times are suitable for rapid shutoff, while slower times can reduce water hammer.

What housing material is used in SHARPE SPNII actuators?

SHARPE SPNII actuators feature an extruded aluminum housing. This material provides a good strength-to-weight ratio and corrosion resistance when properly coated or anodized. The extruded construction allows for precise dimensional control and a smooth interior surface, which contributes to efficient piston operation. The housing is designed to withstand the operating pressures and environmental conditions typical of industrial process control applications. For specific environmental protection ratings, consult the manufacturer's datasheet.

Can SHARPE SPNII actuators be used for modulating control?

SHARPE SPNII actuators are primarily designed for on/off control, but they can be used for modulating control when paired with a suitable positioner. The actuator itself provides a linear torque output in response to air pressure, and a positioner can regulate the air pressure to achieve intermediate valve positions. However, the standard SPNII series does not include an integral positioner; an external positioner must be added. For precise modulating applications, consider the actuator's response time and hysteresis. Consult the manufacturer for specific modulating capabilities and compatible positioners.