{"product_id":"air-dimensions-r221-at-aa1-vacuum-pump","title":"Air Dimensions R221-AT-AA1 Vacuum Pump","description":"\u003cdiv\u003e\u003cp\u003eAir Dimensions' R221-AT-AA1 Dia-Vac pump is a single-head, air-driven high-vacuum pump in the R-Series, engineered for gas sampling and general-purpose vacuum tasks where a compact, oil-free diaphragm pump is required. Part of Air Dimensions' Dia-Vac family, the R-Series pumps deliver vacuum levels up to about 29.8 inches of mercury and are designed for modular configuration, with hazardous-area variants available for Class I Division I and Zone 1 environments when specified by the manufacturer. The R221-AT-AA1 operates from a supplied compressed air source rather than an electric motor, providing clean exhaust and enabling safer integration with analytical instruments, leak-testing rigs, environmental monitors, and process-control equipment in laboratories and industrial settings. Typical use cases include gas sampling and preparation for analytical measurements, calibration and testing of vacuum-dependent instrumentation, and other laboratory or field tasks requiring reliable vacuum generation without introducing lubricants into the gas stream.\u003c\/p\u003e\u003c\/div\u003e","brand":"AIR","offers":[{"title":"Used Surplus - Excellent Condition","offer_id":51657142501678,"sku":null,"price":312.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_0f8763f0-0b02-4176-afe9-41adf090b5c4.jpg?v=1769466356","url":"https:\/\/plgautomation.com\/products\/air-dimensions-r221-at-aa1-vacuum-pump","provider":"PLG Automation ","version":"1.0","type":"link"}