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SHARPE SPNII

SHARPE SPNII is a series of pneumatic valve actuators manufactured by SHARPE, a brand recognized in the industrial valve and actuator sector. The SPNII series includes both spring-return (SR) and double-acting (DA) configurations, designed for quarter-turn valve automation in applications such as process control, oil and gas, water treatment, and chemical processing. The actuators feature extruded aluminum housings, which provide a balance of strength and corrosion resistance suitable for industrial environments. Available torque outputs range from 89 lb-in (SPNII 050 SR) to 2,495 lb-in (SPNII 145 SR) at 80 psi, with closing times as fast as 0.2 seconds for smaller models and up to 1.4 seconds for larger spring-return units. The actuators comply with ISO mount patterns (F04, F05, F07, F10, F12), enabling direct mounting to compatible quarter-turn valves such as ball valves and butterfly valves. The double-acting models deliver higher torque than their spring-return counterparts at the same supply pressure, making them suitable for applications requiring fail-in-position or continuous modulation. 3G Electric supplies the full SHARPE SPNII range, including models with varying ISO mount types and torque ratings, to support plant engineers and procurement specialists in selecting actuators that match valve specifications and system pressure requirements. The extruded aluminum construction contributes to lightweight installation and reduced maintenance compared to cast-iron alternatives. Each actuator is rated for use with clean, dry or lubricated compressed air or inert gas, with standard operating pressure ranges typically up to 120 psi. The SPNII series is designed for reliable operation in ambient temperatures from -20°C to +80°C, with optional accessories such as solenoid valves, limit switches, and positioners available through 3G Electric to complete the automation package. As a global distributor, 3G Electric offers these actuators with logistics support for delivery to industrial facilities worldwide, ensuring that specifications such as torque, stroke time, and mounting interface are matched precisely to the application.

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About SHARPE SPNII

SHARPE SPNII is a series of pneumatic valve actuators manufactured by SHARPE, a brand recognized in the industrial valve and actuator sector. The SPNII series includes both spring-return (SR) and double-acting (DA) configurations, designed for quarter-turn valve automation in applications such as process control, oil and gas, water treatment, and chemical processing. The actuators feature extruded aluminum housings, which provide a balance of strength and corrosion resistance suitable for industrial environments. Available torque outputs range from 89 lb-in (SPNII 050 SR) to 2,495 lb-in (SPNII 145 SR) at 80 psi, with closing times as fast as 0.2 seconds for smaller models and up to 1.4 seconds for larger spring-return units. The actuators comply with ISO mount patterns (F04, F05, F07, F10, F12), enabling direct mounting to compatible quarter-turn valves such as ball valves and butterfly valves. The double-acting models deliver higher torque than their spring-return counterparts at the same supply pressure, making them suitable for applications requiring fail-in-position or continuous modulation. 3G Electric supplies the full SHARPE SPNII range, including models with varying ISO mount types and torque ratings, to support plant engineers and procurement specialists in selecting actuators that match valve specifications and system pressure requirements. The extruded aluminum construction contributes to lightweight installation and reduced maintenance compared to cast-iron alternatives. Each actuator is rated for use with clean, dry or lubricated compressed air or inert gas, with standard operating pressure ranges typically up to 120 psi. The SPNII series is designed for reliable operation in ambient temperatures from -20°C to +80°C, with optional accessories such as solenoid valves, limit switches, and positioners available through 3G Electric to complete the automation package. As a global distributor, 3G Electric offers these actuators with logistics support for delivery to industrial facilities worldwide, ensuring that specifications such as torque, stroke time, and mounting interface are matched precisely to the application.

Common Applications

  • Oil and gas pipeline valve automation — SHARPE SPNII 145 SR spring-return actuator for emergency shutdown valves
  • Water treatment plant flow control — SHARPE SPNII 063 DA double-acting actuator for butterfly valve modulation
  • Chemical processing isolation — SHARPE SPNII 085 SR spring-return actuator for ball valve fail-closed service
  • Power generation cooling systems — SHARPE SPNII 125 SR actuator for large-diameter valve actuation
  • Pharmaceutical batch processing — SHARPE SPNII 050 SR actuator for small valve automation in clean rooms
  • HVAC building management — SHARPE SPNII 075 DA double-acting actuator for air handling unit valve control

Frequently asked questions

Common questions about SHARPE SPNII from 3G Electric.

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

SHARPE SPNII spring-return (SR) actuators use a spring mechanism to return the valve to a fail-safe position (typically closed or open) upon loss of air pressure. Double-acting (DA) actuators require air pressure to move the valve in both directions, providing higher torque output at the same supply pressure but no fail-safe position without additional components. For example, the SPNII 063 SR delivers 163 lb-in at 80 psi, while the SPNII 063 DA delivers 275 lb-in at the same pressure.

Which ISO mount types are available for SHARPE SPNII actuators?

SHARPE SPNII actuators are available with ISO mount types F04, F05, F07, F10, and F12, depending on the model. For instance, the SPNII 050 SR uses F04, the SPNII 063 SR and DA use F05/F07, and the SPNII 145 SR uses F10/F12. This allows direct mounting to valves with corresponding ISO bolt patterns without adapters.

What is the maximum torque output of the SHARPE SPNII series?

The highest torque output in the SHARPE SPNII series is from the SPNII 145 SR spring-return actuator, delivering 2,495 lb-in at 80 psi. Double-acting models typically produce higher torque than spring-return models of the same size; for example, the SPNII 085 DA provides 870 lb-in at 80 psi, compared to 508 lb-in for the SPNII 085 SR.

What materials are used in SHARPE SPNII actuator construction?

SHARPE SPNII actuators feature extruded aluminum housings, which offer corrosion resistance and reduced weight compared to cast iron. Internal components include a piston, rack-and-pinion mechanism, and springs (for SR models). The extruded aluminum body is suitable for indoor and outdoor industrial environments, though additional protective coatings may be required for highly corrosive atmospheres.

Can SHARPE SPNII actuators be used with natural gas or other gases?

Yes, SHARPE SPNII actuators are designed for use with clean, dry compressed air or inert gases. For natural gas applications, ensure the actuator is compatible with the gas composition and that appropriate safety measures are in place. The actuators are not rated for hazardous locations by default; consult 3G Electric for options such as explosion-proof solenoids or positioners if needed.

What is the closing time for SHARPE SPNII spring-return actuators?

Closing times vary by model. The SPNII 050 SR closes in 0.2 seconds, the SPNII 085 SR in 0.4 seconds, the SPNII 125 SR in 1.1 seconds, and the SPNII 145 SR in 1.4 seconds. These times are measured at 80 psi supply pressure and may vary with air supply volume and valve load.