{"product_id":"castair-refrigerated-air-dryer-rdd40-030","title":"Castair Refrigerated Air Dryer RDD40.030","description":"\u003cp\u003eThe Castair RDD40.030 is a refrigerated compressed air dryer from the Castair RDD40 series. The .030 suffix identifies the specific capacity or configuration variant within the RDD40 line. Castair RDD series dryers are engineered for 37°F pressure dew point performance — removing the moisture from compressed air that causes tool failures, spray finish defects, pneumatic component corrosion, and rust inside air distribution piping.\u003c\/p\u003e\n\n\u003cp\u003eThe RDD40 series dryers share the same proven Castair refrigeration design: stainless steel heat exchanger, environmentally compliant R134a or R407c refrigerant, automatic demand drain, and a simple dew point indicator with no computer controls to fail. Call us at 866-217-0063 to confirm the exact CFM capacity, electrical specifications, and connection sizes for the RDD40.030 before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features — Castair RDD40 Series\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure dew point:\u003c\/strong\u003e 37°F — maintains near-dry air at the point of expansion under rated conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefrigerant:\u003c\/strong\u003e R134a or R407c (environmentally compliant)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat exchanger:\u003c\/strong\u003e Stainless steel, dual-function single-body design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic demand drain:\u003c\/strong\u003e Only cycles when condensate is present — conserves compressed air vs. timer drains\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDew point indicator:\u003c\/strong\u003e Simple visual indicator, no computer logic or programming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick-connect refrigerant port:\u003c\/strong\u003e Field recharge without full disassembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum inlet pressure:\u003c\/strong\u003e 232 PSIG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCastair RDD40.030 refrigerated compressed air dryer unit\u003c\/li\u003e\n\u003cli\u003ePower cord\u003c\/li\u003e\n\u003cli\u003eRefrigerant pre-charged at factory\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eA properly sized pre-filter upstream is required for warranty coverage.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e RDD40.030\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Castair RDD40 refrigerated dryer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Dew Point:\u003c\/strong\u003e 37°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Inlet Pressure:\u003c\/strong\u003e 232 PSIG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefrigerant:\u003c\/strong\u003e R134a \/ R407c\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain:\u003c\/strong\u003e Automatic, demand-based\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCFM capacity, voltage, amperage, connection size, weight, dimensions:\u003c\/strong\u003e Contact us — 866-217-0063\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe specialize in Castair compressed air equipment. We can confirm the RDD40.030 specifications and help you verify it is the right dryer for your compressor output and air demand. Free shipping on qualifying orders, free pre-sale technical support, full Castair manufacturer warranty.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342593745109,"sku":"RDD40.030","price":4786.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/RDD40.030.jpg?v=1772675366","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-refrigerated-air-dryer-rdd40-030","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}