{"product_id":"barber-coleman-company-mk-3101-0-2-damper-actuator","title":"Barber-Coleman Company MK-3101-0-2 Damper Actuator","description":"\u003cdiv\u003e\u003cp\u003eThe Barber Colman MK-3101-0-2 Damper Actuator is a compact pneumatic damper actuator designed for HVAC applications such as dampers, mixing boxes, and air valves, delivering reliable two-position ON\/OFF control with proportional characteristics and a spring-return action. It operates at 3 to 8 psig and, for the MK-3101-0-2 variant, specifies a 3.5-inch stroke with a 1\/8 in NPT air inlet and an approximate 8 in² (about 52 cm²) effective actuation area. The unit weighs about 2.72 kg and carries a NEMA 1 protection rating, making it suitable for indoor, non-hazardous environments where robust damper positioning is required. This model is identified as part of the MK-3101 family, known for 2-position (ON\/OFF) operation with proportional control and spring return, providing fail-safe damper positioning in heating, ventilating, and air conditioning systems. The MK-3101-0-2 variant is documented to have a 3–8 psi spring range, 3.5-inch stroke, and approximately 21 lb-in of torque, reflecting its capability to move moderate-variable dampers with precise travel. Typical applications include regulating airflow in commercial buildings, balancing rooms, and zoning systems where dependable, non-electrical override positioning is desired and where a compact pneumatic solution is preferred. Note that, according to manufacturer records, the MK-3101-0-2 variant has been discontinued, which can affect availability and substitution considerations for new projects. \u003c\/p\u003e\u003c\/div\u003e","brand":"Barber-Coleman","offers":[{"title":"New","offer_id":51676665839918,"sku":null,"price":435.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_fa243936-76c1-4e76-8b2b-37abcce3dc41.jpg?v=1769552125","url":"https:\/\/plgautomation.com\/products\/barber-coleman-company-mk-3101-0-2-damper-actuator","provider":"PLG Automation ","version":"1.0","type":"link"}