{"product_id":"copeland-comfort-control-alco-097719-control-valve","title":"Copeland Comfort Control (Alco) 097719 Control Valve","description":"\u003cp\u003eThe \u003cstrong\u003eCopeland Comfort Control (Alco) 097719\u003c\/strong\u003e, also known as the \u003cstrong\u003eEX4-I21\u003c\/strong\u003e, is a high-performance \u003cstrong\u003estepper motor driven electrical control valve\u003c\/strong\u003e engineered for precise refrigerant mass flow management. Designed for veteran contractors, this \u003cstrong\u003ebipolar stepper motor valve\u003c\/strong\u003e provides \u003cstrong\u003econtinuous modulation\u003c\/strong\u003e across a 10% to 100% capacity range, making it ideal for \u003cstrong\u003esuperheat control\u003c\/strong\u003e, hot gas bypass, and liquid injection. Featuring a \u003cstrong\u003e3\/8\" x 5\/8\" sweat ODF connection\u003c\/strong\u003e and a \u003cstrong\u003e24Vdc supply voltage\u003c\/strong\u003e, this unit utilizes chemical-resistant \u003cstrong\u003eceramic slide and ports\u003c\/strong\u003e to eliminate mechanical wear and ensure repeatable accuracy. With a maximum working pressure of \u003cstrong\u003e870 psig\u003c\/strong\u003e and \u003cstrong\u003epositive shut-off\u003c\/strong\u003e capability, it functions effectively as both an \u003cstrong\u003eelectronic expansion valve (EEV)\u003c\/strong\u003e and a solenoid valve, reducing system complexity. The \u003cstrong\u003efully hermetic stainless steel body\u003c\/strong\u003e and direct coupling mechanism provide long-term reliability in demanding \u003cstrong\u003eHVACR refrigeration systems\u003c\/strong\u003e. Installers should note the 750-step resolution and 1.5-second full stroke time for optimal tuning with \u003cstrong\u003eEmerson universal drivers\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Mass Flow:\u003c\/strong\u003e Stepper motor technology ensures accurate \u003cstrong\u003erefrigerant flow control\u003c\/strong\u003e and stable superheat across varying loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Purpose Utility:\u003c\/strong\u003e Operates as an \u003cstrong\u003eexpansion valve\u003c\/strong\u003e, suction pressure regulator, or liquid level controller for maximum versatility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Leakage Design:\u003c\/strong\u003e Features \u003cstrong\u003epositive shut-off\u003c\/strong\u003e to prevent migration, removing the need for an external solenoid valve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Durability:\u003c\/strong\u003e Constructed with a \u003cstrong\u003estainless steel body\u003c\/strong\u003e and ceramic internal components to resist corrosion and high-velocity wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response:\u003c\/strong\u003e Achieves full stroke travel in 1.5 seconds, providing rapid correction for system hunting or load spikes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the EX4-I21 compatible with CO2 systems?\u003c\/strong\u003e\u003cbr\u003eYes, this valve is rated for subcritical CO2 applications with a maximum operating pressure differential (MOPD) of 580 psid.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this valve require a specific driver?\u003c\/strong\u003e\u003cbr\u003eThe EX4-I21 requires a bipolar stepper motor driver, such as the \u003cstrong\u003eCopeland Comfort Control (Alco) \u003c\/strong\u003e\u003cstrong\u003eEXD series\u003c\/strong\u003e or comparable 24Vdc controllers, to manage the 500mA phase current.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this valve be used in bi-flow applications?\u003c\/strong\u003e\u003cbr\u003eWhile the EX4 series has bi-flow versions (e.g., EX4-U31), the standard \u003cstrong\u003eEX4-I21\u003c\/strong\u003e is a uni-flow design; always verify the flow arrow direction during brazing.\u003c\/p\u003e\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":1640386265113,"sku":"97719","price":565.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/products\/Pic_4b908015-590b-4e2a-a99b-e6855055417e.jpg?v=1645041216","url":"https:\/\/www.gsistore.com\/en-ca\/products\/copeland-comfort-control-alco-097719-control-valve","provider":"GSIstore","version":"1.0","type":"link"}