{"product_id":"rheodyne-waters-switching-valve","title":"Rheodyne Waters Switching Valve","description":"\u003ch3\u003eRheodyne EV700-100-WA Automated High-Pressure Switching Valve for Waters HPLC Systems\u003c\/h3\u003e\n\u003cp\u003eThe Rheodyne \/ IDEX Health \u0026amp; Science EV700-100-WA Automated Switching Valve is a precision fluidic switching module custom-engineered for integration into Waters HPLC, UHPLC, and automated sample preparation instruments. Designed for high-pressure flow switching, column switching, fraction collection, and backflushing applications, this valve utilizes a motorized actuator assembly paired with an ultra-low carryover ceramic rotor and stator set. Engineered to operate continuously at pressures up to 5,000 psi (345 bar) or higher depending on configuration, the EV700-100-WA delivers high-speed position indexing and minimal internal swept volume to preserve sharp chromatographic peak shapes. Controlled via direct digital communication or electrical logic triggers from the Waters system mainframe, this valve ensures reproducible, leak-free switching over hundreds of thousands of actuation cycles.\u003c\/p\u003e\n\u003ch3\u003eTechnical Performance \u0026amp; Structural Attributes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWaters-Specific Interface Integration: Custom wiring, pin configurations, and mechanical mounting geometry allow seamless plug-and-play installation into Waters HPLC module compartments.\u003c\/li\u003e\n\u003cli\u003eUltra-Low Swept Volume Flow Paths: Micro-machined fluidic channels and ports minimize dispersion, preserving column efficiency and mass spectrometry spray stability.\u003c\/li\u003e\n\u003cli\u003eChemically Inert Ceramic \u0026amp; DuraLife Materials: High-purity ceramic stator and specialized rotor seal resist aggressive organic solvents, high-pH buffers, and abrasive salts.\u003c\/li\u003e\n\u003cli\u003eHigh-Torque Precision Automated Actuation: Integrated electronic drive actuator ensures fast, reliable valve position switching in less than 100 milliseconds.\u003c\/li\u003e\n\u003cli\u003eZero-Dead-Volume Fluid Connections: Standard 10-32 threaded female ports accept micro-volume capillary tubing fittings for zero-dead-volume fluid transfers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eModel \/ Part Number: EV700-100-WA\u003c\/li\u003e\n\u003cli\u003ePrimary Manufacturer: Rheodyne (IDEX Health \u0026amp; Science) \/ Waters Corporation\u003c\/li\u003e\n\u003cli\u003eEquipment Category: Automated High-Pressure HPLC Switching Valve\u003c\/li\u003e\n\u003cli\u003eSwitching Architecture: 2-Position \/ 6-Port (or 10-Port depending on internal fluidic disk layout)\u003c\/li\u003e\n\u003cli\u003eMaximum Operating Pressure: 5,000 psi (345 bar) continuous duty\u003c\/li\u003e\n\u003cli\u003ePort Thread Size: Standard 10-32 UNF Coned Female Ports\u003c\/li\u003e\n\u003cli\u003eWetted Materials: Ultra-High Molecular Weight Polymer \/ Ceramic \/ Stainless Steel\u003c\/li\u003e\n\u003cli\u003eActuation Time: Less than 100 milliseconds position-to-position\u003c\/li\u003e\n\u003cli\u003eInstrument Compatibility: Waters Alliance 2695, 2795, and 2695D HPLC Systems\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Range: 4 to 50 degrees C (39 to 122 degrees F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Benefits \u0026amp; Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAutomated Dual-Column Switching: Enables automated selection between orthogonal analytical columns during multi-method sequence runs without manual plumbing changes.\u003c\/li\u003e\n\u003cli\u003eOnline Sample Clean-up \u0026amp; Matrix Stripping: Facilitates backflushing and SPE pre-column heart-cutting to protect primary analytical columns from heavy sample matrix contamination.\u003c\/li\u003e\n\u003cli\u003eRoutine Instrument Service \u0026amp; Automation: Replaces worn valve modules in Waters HPLC systems to restore precise fluidic flow paths and peak retention time reproducibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUsed, tested to be in great condition.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003csmall\u003eAll product names, logos, and brands are property of their respective owners. Rheodyne, IDEX Health \u0026amp; Science, and Waters are registered trademarks of IDEX Corporation and Waters Corporation.\u003c\/small\u003e\u003c\/p\u003e","brand":"Rheodyne","offers":[{"title":"Default Title","offer_id":67911860486396,"sku":"11048","price":166.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8463\/5132\/files\/rheodyne-waters-switching-valve-valves-rheodyne-487829.jpg?v=1792800352","url":"https:\/\/lifesciencestrading.com\/products\/rheodyne-waters-switching-valve","provider":"Life Sciences Trading","version":"1.0","type":"link"}