{"product_id":"castair-pressure-switch-15-230-psi-on-off-no-unloader-and-adjustable-differential","title":"Castair Pressure Switch 15-230 PSI On\/Off No Unloader and adjustable Differential","description":"\u003cp\u003eThe Castair PSAD15-230 is a pressure switch with an adjustable operating range of 15-230 PSI, on\/off control, no integral unloader valve, and an adjustable differential. This is a heavy-range pressure switch designed for Cast Air compressors that operate at pressures significantly higher than the typical shop 90-150 PSI range — the 230 PSI upper limit puts this in the high-pressure industrial and specialty compressor territory. The adjustable differential means the cut-in and cut-out pressure spread can be set to match your application's demand cycle rather than being fixed at the factory setting.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote: Cast Air did not provide a dedicated manufacturer product page for this switch.\u003c\/strong\u003e Specifications are drawn from the product listing. At $239.97, this is the highest-priced pressure switch in the Cast Air lineup — appropriate for specialty high-pressure applications. Call us to confirm compatibility and application suitability before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eUnderstanding the Pressure Switch Specifications\u003c\/h2\u003e\n\n\u003ch3\u003eOperating Range: 15-230 PSI\u003c\/h3\u003e\n\u003cp\u003eThis switch can be set to cut in (start the compressor) anywhere from 15 PSI up to the cut-out pressure, and cut out (stop the compressor) at pressures up to 230 PSI. For reference, standard shop pressure switches top out at 145-175 PSI. The PSAD15-230 is for applications where the compressor system operates above that — high-pressure inflation, specialty pneumatic systems, industrial process air at elevated pressures, or systems where high cutout pressure is needed to maintain adequate working pressure through a regulator or pressure drop in long line runs.\u003c\/p\u003e\n\n\u003ch3\u003eNo Unloader Valve\u003c\/h3\u003e\n\u003cp\u003eThis switch does not include an integral unloader valve. An unloader valve releases the pressure trapped in the head and outlet line when the compressor stops, allowing the motor to restart against atmospheric pressure rather than fighting residual compressed air in the cylinder. Without an unloader, the compressor motor must restart against whatever pressure remains in the system. This configuration is appropriate for compressors using a separate unloader mechanism, for systems with sufficient tank volume and pressure drop that head pressure is negligible at restart, or for specific system designs where the absence of an unloader is intentional. If your application requires an unloader, see the PSH1MIX instead.\u003c\/p\u003e\n\n\u003ch3\u003eAdjustable Differential\u003c\/h3\u003e\n\u003cp\u003eThe differential is the spread between cut-in and cut-out pressure. On a fixed-differential switch, this spread is set at the factory (typically 30-40 PSI on standard switches). On the PSAD15-230, the differential is adjustable — you can set both the cut-out pressure and the differential independently. This allows you to optimize compressor cycling for your specific application: a narrow differential means the compressor cycles more frequently but the tank pressure stays more consistent; a wider differential means fewer cycles and more pressure swing.\u003c\/p\u003e\n\n\u003ch2\u003eWhen Does a Shop Need the PSAD15-230?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-pressure compressor application (above 175 PSI) where standard 145-175 PSI switches are not rated for the cutout pressure\u003c\/li\u003e\n\u003cli\u003eApplication requiring adjustable differential to optimize compressor cycling for the demand pattern\u003c\/li\u003e\n\u003cli\u003eReplacing a failed PSAD15-230 or equivalent high-pressure adjustable switch on an existing Cast Air unit\u003c\/li\u003e\n\u003cli\u003eIndustrial or specialty pneumatic systems with non-standard pressure requirements\u003c\/li\u003e\n\u003cli\u003eSystem design that uses a separate unloader mechanism, making an integral unloader switch unnecessary\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePSAD15-230 vs. Standard Pressure Switches\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePSH1 — 145-175 PSI, no unloader — $36.31\u003c\/strong\u003e — standard shop pressure switch, fixed differential, low cost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePSH1MIX — 145-175 PSI, with unloader — $40.73\u003c\/strong\u003e — standard range with integral unloader for motors that need it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePSAD15-230 — 15-230 PSI, no unloader, adjustable differential — $239.97\u003c\/strong\u003e (this unit) — high-pressure range, adjustable, for specialty applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe large price difference between the PSH1 series and the PSAD15-230 reflects the higher-rated contacts, heavier-duty switching mechanism, and adjustable differential required for high-pressure and industrial service.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e PSAD15-230\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Range:\u003c\/strong\u003e 15-230 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Type:\u003c\/strong\u003e On\/Off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnloader:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifferential:\u003c\/strong\u003e Adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Rating:\u003c\/strong\u003e Not confirmed in listing — call for voltage\/amperage specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $239.97\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Data:\u003c\/strong\u003e Product page not available — specifications from product listing data\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat Is Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x Castair PSAD15-230 pressure switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUnloader valve, tubing, and installation fittings are not included. If an unloader is required for your application, it must be sourced and installed separately.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h2\u003e\n\u003cp\u003eHigh-pressure pressure switches are not commodity items — the wrong switch in a high-pressure application creates a safety hazard if the contacts are not rated for the load or the pressure rating is insufficient. We have been selling Cast Air components since 2016 and can confirm whether the PSAD15-230 is the correct switch for your system before you order. If you need to discuss pressure switch selection, electrical ratings, or unloader requirements, call us — that is exactly what our tech support team is here for. Free shipping, full warranty.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCast Air specialist\u003c\/strong\u003e since 2016\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on all orders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support\u003c\/strong\u003e — we verify pressure switch suitability for your application\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety-first guidance\u003c\/strong\u003e — we will not let you order the wrong pressure rating\u003c\/li\u003e\n\u003c\/ul\u003e\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":53342574674133,"sku":"PSAD15-230","price":443.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/CastairPressureSwitch.jpg?v=1772652794","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-pressure-switch-15-230-psi-on-off-no-unloader-and-adjustable-differential","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}