{"product_id":"castair-all-hp-1-4-petcock-drain-valve-pc14","title":"Castair All HP 1\/4\" Petcock Drain Valve PC14","description":"\u003cp\u003eThe Castair PC14 is a 1\/4\" petcock drain valve for Cast Air air compressors, used across all horsepower classes in the Cast Air lineup. At $5.08, this is a wear item — petcock drain valves corrode, clog with compressor oil and condensate, and seize closed over time, at which point the tank cannot be properly drained and moisture builds up. The PC14 is the correct OEM replacement to restore proper tank drainage and extend compressor service life.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote: Cast Air did not provide a dedicated manufacturer product page for this valve.\u003c\/strong\u003e Specifications are drawn from the product listing. The \"All HP\" designation in the product name indicates this valve is used across the full Cast Air horsepower range. Contact us to confirm compatibility with your specific compressor model before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Tank Drainage Matters\u003c\/h2\u003e\n\u003cp\u003eEvery piston air compressor generates condensate — water vapor from the intake air condenses inside the tank as the air cools after compression. In a humid environment, a compressor running regular shop cycles can accumulate several ounces to a pint of water per day in the tank. That condensate is corrosive. It mixes with compressor oil blow-by, forming a sludge that accelerates rust from the inside of the tank. The result is premature tank failure — rust pinholes that cause the tank to fail pressure test or, in severe cases, fail catastrophically.\u003c\/p\u003e\n\u003cp\u003eThe fix is simple: drain the tank regularly. A working petcock valve makes this fast and easy. A seized or clogged petcock makes it impossible. The PC14 is the part that keeps the drain functional.\u003c\/p\u003e\n\n\u003ch3\u003eValve Specification Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e PC14\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/4\" NPT (standard petcock drain valve thread for Cast Air compressors)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Petcock (manual quarter-turn or screw-type drain valve)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Tank drain on Cast Air air compressors — all HP classes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Cast Air compressors with 1\/4\" NPT tank drain port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $5.08\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Know When the Petcock Needs Replacing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eValve is seized — will not open or requires excessive force to turn\u003c\/li\u003e\n\u003cli\u003eValve is stuck open — leaks continuously even when turned to closed position\u003c\/li\u003e\n\u003cli\u003eValve body is corroded or cracked — visible rust, pitting, or physical damage\u003c\/li\u003e\n\u003cli\u003eCondensate is not draining when the valve is open — internal clogging with rust or sludge\u003c\/li\u003e\n\u003cli\u003eThread is damaged or leaking air around the valve body even with sealant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDepressurize the tank completely before removing the old petcock valve — never remove a drain valve under pressure\u003c\/li\u003e\n\u003cli\u003eUse PTFE tape or pipe thread compound on the NPT threads before installing the new valve\u003c\/li\u003e\n\u003cli\u003eHand-tighten plus 1-2 turns with a wrench — do not overtighten, which can crack the brass fitting or damage the tank thread\u003c\/li\u003e\n\u003cli\u003eAfter installation, pressurize to working pressure and check for leaks at the valve body and threads with soapy water or leak detector solution\u003c\/li\u003e\n\u003cli\u003eDrain interval: after each use in high-humidity environments; weekly minimum in climate-controlled shops\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen Does a Shop Need the PC14?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePetcock is seized, leaking, or no longer functional — most common failure mode\u003c\/li\u003e\n\u003cli\u003eCompressor service\/rebuild — replacing all wear items including the drain valve\u003c\/li\u003e\n\u003cli\u003eTank was not drained regularly and condensate sludge has clogged the original petcock\u003c\/li\u003e\n\u003cli\u003eReplacement as part of preventive maintenance to avoid future seized valve during a critical job\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e PC14\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/4\" NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Petcock drain valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Tank drain port — all Cast Air HP classes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $5.08\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 PC14 petcock drain valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePTFE tape or pipe thread compound is not included but required for installation on NPT threads.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h2\u003e\n\u003cp\u003eA $5 OEM drain valve is one of the most cost-effective maintenance parts you can stock for a Cast Air compressor. We keep these in stock and ship free on all orders. Since 2016, we have been the specialist supplier for Cast Air compressor parts — from drain valves to complete pump assemblies. If you are building a maintenance kit for a Cast Air unit, call us and we can walk you through the common wear items to include.\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 — maintenance kit guidance available\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM parts\u003c\/strong\u003e — correct thread class and material for compressor tank service\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":53342574346453,"sku":"PC14","price":9.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/cacad.jpg?v=1772652783","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-all-hp-1-4-petcock-drain-valve-pc14","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}