{"product_id":"a-j-antunes-8221212022-pressure-switch","title":"A.J. Antunes 8221212022 Pressure Switch","description":"\u003cp\u003eThe \u003cstrong\u003eA.J. Antunes 8221212022\u003c\/strong\u003e (Model \u003cstrong\u003eJD-2\u003c\/strong\u003e) is a high-performance \u003cstrong\u003edifferential air pressure switch\u003c\/strong\u003e designed for precision monitoring in HVAC and industrial process applications. This \u003cstrong\u003ecompact air pressure switch\u003c\/strong\u003e features an adjustable set point range from \u003cstrong\u003e0.05\" to 9.0\" W.C.\u003c\/strong\u003e, providing critical flexibility for \u003cstrong\u003edraft proving\u003c\/strong\u003e, \u003cstrong\u003efilter monitoring\u003c\/strong\u003e, and \u003cstrong\u003efan status automation\u003c\/strong\u003e. Built for durability, the unit utilizes a rugged \u003cstrong\u003esensing diaphragm\u003c\/strong\u003e and high-quality electrical contacts to ensure reliable \u003cstrong\u003eSPDT switching\u003c\/strong\u003e under demanding thermal conditions. The \u003cstrong\u003eJD-2 differential switch\u003c\/strong\u003e is engineered for a \u003cstrong\u003ecompression fit\u003c\/strong\u003e installation, facilitating a secure vacuum or pressure connection in tight mechanical spaces. Technicians rely on this \u003cstrong\u003eadjustable pressure switch\u003c\/strong\u003e for its repeatable accuracy and \u003cstrong\u003efield-adjustable set points\u003c\/strong\u003e, which are essential for maintaining \u003cstrong\u003esystem static pressure\u003c\/strong\u003e and ensuring safe combustion airflow in commercial boiler and furnace configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Benefits for Technicians:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Adjustability:\u003c\/strong\u003e The 0.05\" to 9\" W.C. range allows for \u003cstrong\u003eversatile field calibration\u003c\/strong\u003e across various air handling systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable SPDT Contacts:\u003c\/strong\u003e Provides flexible wiring options for \u003cstrong\u003enormally open or normally closed\u003c\/strong\u003e circuits in safety interlock loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Footprint:\u003c\/strong\u003e Specifically designed for \u003cstrong\u003espace-constrained installations\u003c\/strong\u003e common in modern rooftop units and high-efficiency furnaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Accuracy:\u003c\/strong\u003e Ensures stable \u003cstrong\u003edifferential pressure sensing\u003c\/strong\u003e to prevent nuisance tripping while maintaining strict safety standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Engineered to withstand the rigors of \u003cstrong\u003emechanical room environments\u003c\/strong\u003e without losing calibration integrity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Installation Questions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I adjust the set point on the JD-2 model?\u003c\/strong\u003e\u003cbr\u003eThe set point is field-adjustable by turning the adjustment screw located under the removable cover. Ensure you use a calibrated manometer to verify the \u003cstrong\u003eswitching threshold\u003c\/strong\u003e during commissioning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this switch be used for both vacuum and pressure applications?\u003c\/strong\u003e\u003cbr\u003eYes, the \u003cstrong\u003eA.J. Antunes \u003c\/strong\u003e\u003cstrong\u003e8221212022\u003c\/strong\u003e is designed to sense \u003cstrong\u003epositive pressure, vacuum, or differential pressure\u003c\/strong\u003e depending on which ports are utilized during \u003cstrong\u003epiping installation\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum surge pressure this switch can handle?\u003c\/strong\u003e\u003cbr\u003eWhile designed for low-pressure sensing, the internal \u003cstrong\u003ediaphragm assembly\u003c\/strong\u003e is rated to withstand standard system surges common in \u003cstrong\u003ecommercial ventilation\u003c\/strong\u003e without rupturing.\u003c\/p\u003e\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"A.J. Antunes","offers":[{"title":"Default Title","offer_id":35646216780,"sku":"8221212022","price":95.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Image_92e9c765-d744-46d4-bc23-8eddaf6f5b6b.png?v=1791311248","url":"https:\/\/www.gsistore.com\/products\/a-j-antunes-8221212022-pressure-switch","provider":"GSIstore","version":"1.0","type":"link"}