
MK-4821 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $383.77 | Condition is New, SCHNEIDER ELECTRIC MK-4821 (Barber Colman) "8-13#VALVE ACTUATOR, FREE SHIPPING | 98.5% |
![]() | $398.01 | Condition is New, Schneider Electric (Barber Colman) MK-4821 8-13#VALVE ACTUATOR,11sq.inch, FREE SHIPPING | 99.7% |
![]() | $422.00 | Condition is New, Schneider Electric (Barber Colman) MK-4821 8-13#VALVE ACTUATOR,11sq.inch, FREE SHIPPING | 100.0% |
![]() | $428.99 | Condition is New, Schneider Electric Mk-4821 Actuator, 8 To 13 Psig, 11 Sq. In., FREE SHIPPING | 99.8% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $99.95 | Condition is Used, Schneider Electric Barber Colman MK-4821 Pneumatic Valve Actuator, shipping cost = $18.30 | 99.8% |

The Schneider Electric MK-4821 Actuator is a versatile and reliable pneumatic actuator designed for various automation applications. This actuator comes with an operating torque of 13 Nm (9.56 ft-lbs), making it suitable for handling medium-sized loads. The actuator boasts a compact and robust design, with a body made of cast aluminum and stainless steel components, ensuring durability and resistance to harsh environments.
The MK-4821 Actuator is available in both fail-safe and fail-secure executions, providing flexibility in application design. Its fail-safe execution assures a safe position in case of power loss, while the fail-secure execution maintains the actuator position in the event of power failure, ensuring continued operation of the associated process.
This actuator features a double-acting, spring-return design with an integrated position feedback system. The position feedback is provided through a built-in pneumatic position switch, which can be set to provide either limit or end-of-stroke position indication. The actuator also includes a built-in, adjustable spring, allowing for fine-tuning of the force required to move the actuator against the applied pneumatic pressure.
The MK-4821 Actuator is compatible with a wide range of Schneider Electric and third-party solenoid valves, allowing for easy integration into various control systems. It also comes with a standard 1/2" NPT threaded connection for easy and secure attachment to piping systems.
This actuator is designed to operate in temperatures ranging from -10 C to 60 C (-14 F to 140 F), ensuring reliable performance in diverse applications. The MK-4821 Actuator's robust and compact design, combined with its versatile features, make it an ideal choice for various industrial automation applications.
Schneider Electric MK-4821 Actuator 13 is a pneumatic actuator designed for controlling valves in various industrial applications. Like any other industrial component, the Schneider Electric MK-4821 Actuator 13 has its advantages and disadvantages.
Advantages:1. Robust Design: The actuator is built with high-quality materials and features a rugged design, making it suitable for harsh industrial environments. It can withstand high temperatures and humidity levels, ensuring reliable operation.
2. Versatile: The MK-4821 Actuator 13 can be used with various valve types and sizes, making it a versatile solution for different industrial applications.
3. Easy Installation: The actuator comes with a simple and straightforward installation process, which saves time and reduces the need for specialized skills or tools.
4. Low Maintenance: The Schneider Electric MK-4821 Actuator 13 is designed for minimal maintenance requirements. Its durable components and self-lubricating features reduce the need for frequent maintenance and downtime.
Disadvantages:1. Price: The Schneider Electric MK-4821 Actuator 13 is a premium product, and its cost may be a significant consideration for some industrial applications.
2. Limited Configuration Options: The actuator has limited configuration options, which may not be suitable for complex industrial applications that require advanced control features.
3. Pneumatic Power Requirement: The Schneider Electric MK-4821 Actuator 13 operates on compressed air, which may require additional infrastructure and costs for compressors and air lines.
Conclusion:The Schneider Electric MK-4821 Actuator 13 is a reliable and robust solution for controlling valves in various industrial applications. Its advantages, such as versatility, easy installation, and low maintenance, make it an attractive option for many industrial users. However, its disadvantages, including cost, limited configuration options, and pneumatic power requirement, may be significant considerations for some applications.
Recommendation:If your industrial application requires a reliable and versatile valve actuator that can handle harsh environments and minimal maintenance requirements, the Schneider Electric MK-4821 Actuator 13 is an excellent choice. However, if you need advanced control features or are concerned about the cost and infrastructure requirements of a pneumatic actuator, you may want to explore alternative solutions, such as electric or hydraulic actuators. Ultimately, the decision to purchase the Schneider Electric MK-4821 Actuator 13 should be based on the specific requirements and constraints of your industrial application.
Details:
And enclosures. Light industrial. Schneider Electric MK-4821 actuator,8 to 13 psig,11 sq. Electrical outlet's.
Electrical boxes. Receptacles. Pneumatic valve actuator, air connection gender female, size 1/8 in, type not, application globe valves, compatible 1/2 control pressure - maximum 30 psi, diaphragm material neoprene, effective area 11 sq housing aluminum, installation orientation vertical, manufacturer series mk-48 mounting line of the body, operating temperature 220 degrees f details.
specifications maxohvac:
- brand: Schneider Electric
- mpn: Mk-4821
- type: Hvacr And Appliance Controls Cooling Equipment Relays
- custom bundle: No
- weight: 2.4000
- length: 7.300
- width: 5.500
- features: Pneumatic Valve Actuator, Air Connection Gender Female, Air Conne
shipping maxohvac:
- class: standard
- type: fixed
- service: standard
- transit: 5-5 days
payments maxohvac:
- other
- credit card: diners-club
- wallet: apple-pay
returns maxohvac:
- paid by: seller
- method: money back
- time: 60 days
- policy: returns accepted
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
seller maxohvac:
- city: USA
- rating: 99.7%
- # reviews: 1264967
offer maxohvac:
- in stock #: 5
- prices: $99.95–$428.99
- item condition:
- New
- Used
- availability: in stock
- options: ship-to-home
- sold #: 13
- started: october 12, 2025
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