{"product_id":"castair-cold-start-valve-csv","title":"Castair Cold Start Valve CSV","description":"\u003ch2\u003eCastair Cold Start Valve CSV\u003c\/h2\u003e\n\n\u003cp\u003eThe Castair Cold Start Valve (part number CSV) is a specialty valve component for air compressor systems that need startup load relief, particularly in cold-weather conditions. Listed by Castair alongside their in-tank check valve line, it's a replacement or configuration component for specific Castair compressor builds. At $5.39, if your Castair-equipped system requires this valve and it's failed or missing, this is the factory-correct part.\u003c\/p\u003e\n\n\u003ch3\u003eWhat a Cold Start Valve Does\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose:\u003c\/strong\u003e Allows the compressor motor to start without fighting against residual head pressure. By temporarily relieving head pressure at startup, the motor can accelerate to operating speed before the compressor loads up — reducing mechanical stress and inrush current on single-phase motors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen it matters:\u003c\/strong\u003e Cold weather thickens compressor oil and increases internal resistance. Combined with the high locked-rotor current of single-phase motors, starting under pressure can cause tripped breakers, failed capacitors, or burned windings over time\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsed with:\u003c\/strong\u003e Specific Castair compressor configurations. Castair also offers a 90-degree check valve with bleeder port (#2414025, 1\/2\" Flare inlet x 1\/2\" MNPT outlet) for DD, PK, and PP unit designations, with a repair kit available (#2414025K)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Castair Check Valve and Startup Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCSV\u003c\/strong\u003e — Cold start valve, $5.39 (this listing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#2414025\u003c\/strong\u003e — 90-degree check with bleeder port for DD\/PK\/PP units, 1\/2\" Flare inlet x 1\/2\" MNPT outlet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#2414025K\u003c\/strong\u003e — Repair kit for #2414025\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Needs the Castair CSV\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShops in cold climates where compressors start cold after sitting overnight\u003c\/li\u003e\n\u003cli\u003eTechnicians replacing a failed cold start valve on an existing Castair-built system\u003c\/li\u003e\n\u003cli\u003eAnyone servicing a Castair compressor where the motor struggles to start under residual head pressure\u003c\/li\u003e\n\u003cli\u003eInstallers configuring a Castair build that specifies this valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen You Don't Need This\u003c\/h3\u003e\n\u003cp\u003eMost commercial reciprocating compressors use a standard unloader valve integrated with the pressure switch for load-relief at startup — that's a different component. The CSV is a Castair-specific part. If you're not sure whether your system requires it, call us with your compressor model number and we can confirm.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e CSV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Castair (Spicer, Minnesota)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Cold Start Valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Major Components \/ Check Valve family\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrice:\u003c\/strong\u003e $5.39\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Castair air compressor systems requiring cold-start load relief\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eDetailed dimensional and thread specifications are not published online. Contact us for fitment confirmation if needed.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe stock Castair replacement components including specialty valves and check valve family parts. If you need to confirm this is the right part for your configuration, call us before you order.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on qualifying orders to the lower 48\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support\u003c\/strong\u003e — fitment confirmation by phone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e on all Castair products\u003c\/li\u003e\n\u003c\/ul\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":53342532698325,"sku":"CSV","price":9.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/abacd_3e52afab-c657-4fbf-bfca-cbcfd8ff0306.png?v=1772652628","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-cold-start-valve-csv","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}