{"product_id":"weil-mclain-511-246-398","title":"Weil McLain 511-246-398 Valve Cartridge","description":"\u003cp\u003eThe \u003cstrong\u003eWeil McLain 511-246-398 3-Way Valve Cartridge with Changing Tool\u003c\/strong\u003e is the factory \u003cstrong\u003ereplacement cartridge\u003c\/strong\u003e for the \u003cstrong\u003eHoneywell VC-series 3-way valve\u003c\/strong\u003e used on \u003cstrong\u003eWeil-McLain CGt boilers\u003c\/strong\u003e. The \u003cstrong\u003ecartridge\u003c\/strong\u003e is the part of the valve that actually moves: a \u003cstrong\u003espring-loaded plug\u003c\/strong\u003e inside a \u003cstrong\u003egrey cage with open ports\u003c\/strong\u003e, sealed with \u003cstrong\u003eO-rings\u003c\/strong\u003e and finished with a \u003cstrong\u003ebrown cap\u003c\/strong\u003e where the \u003cstrong\u003eactuator stem\u003c\/strong\u003e pushes down on it. The kit includes the metal \u003cstrong\u003ecartridge changing tool\u003c\/strong\u003e, stamped \u003cstrong\u003eHoneywell VC-VALVES\u003c\/strong\u003e, so the old cartridge can be pulled and the new one seated \u003cstrong\u003ewithout cutting the valve body out of the piping\u003c\/strong\u003e. On the \u003cstrong\u003eCGt\u003c\/strong\u003e the valve is driven by the \u003cstrong\u003e3-way valve actuator 635-100-023\u003c\/strong\u003e (a \u003cstrong\u003eHoneywell VC8710\u003c\/strong\u003e series actuator), which moves the cartridge to \u003cstrong\u003edivert boiler water\u003c\/strong\u003e between the two outlet branches of the valve.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003e3-way valve\u003c\/strong\u003e has \u003cstrong\u003eone common port and two outlet ports\u003c\/strong\u003e. As the \u003cstrong\u003eactuator\u003c\/strong\u003e powers the stem down or lets the \u003cstrong\u003espring\u003c\/strong\u003e push it back up, the \u003cstrong\u003eplug\u003c\/strong\u003e in the cartridge shifts position and sends flow out one path or the other. Honeywell’s \u003cstrong\u003ecartridge-cage design\u003c\/strong\u003e puts every wearing part, the \u003cstrong\u003eplug, seals, and spring\u003c\/strong\u003e, into a single replaceable insert, so a new cartridge \u003cstrong\u003erestores the valve to factory condition\u003c\/strong\u003e while the \u003cstrong\u003evalve body\u003c\/strong\u003e stays in the line. Because the cartridge sits in \u003cstrong\u003ehot boiler water\u003c\/strong\u003e all year, \u003cstrong\u003emineral scale\u003c\/strong\u003e and \u003cstrong\u003emoisture damage\u003c\/strong\u003e are the usual enemies: deposits can \u003cstrong\u003estick the plug\u003c\/strong\u003e, \u003cstrong\u003ecut or flatten the O-rings\u003c\/strong\u003e, and let water \u003cstrong\u003eweep past a seat\u003c\/strong\u003e that should be sealed.\u003c\/p\u003e\n\u003cp\u003eBefore you condemn the cartridge, confirm the \u003cstrong\u003eactuator\u003c\/strong\u003e is getting its call and that the \u003cstrong\u003estem travels\u003c\/strong\u003e when it should. A \u003cstrong\u003esticking or leaking cartridge\u003c\/strong\u003e typically shows up as an \u003cstrong\u003eactuator that cycles but the water does not change path\u003c\/strong\u003e, \u003cstrong\u003eheat or flow in a branch that should be off\u003c\/strong\u003e, or \u003cstrong\u003eslow, noisy switching\u003c\/strong\u003e. Isolate the boiler, \u003cstrong\u003erelieve system pressure\u003c\/strong\u003e, let the valve cool, remove the \u003cstrong\u003eactuator\u003c\/strong\u003e, and use the supplied \u003cstrong\u003echanging tool\u003c\/strong\u003e to take out the old cartridge. Check the \u003cstrong\u003evalve bore\u003c\/strong\u003e for scale before you seat the new \u003cstrong\u003e511-246-398\u003c\/strong\u003e, then refit the actuator and run the boiler through a full call for heat and the other branch to confirm the valve \u003cstrong\u003ediverts cleanly\u003c\/strong\u003e. If the \u003cstrong\u003e635-100-023 actuator\u003c\/strong\u003e is also old or showing moisture damage, replacing it on the same visit saves a second trip.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eComplete Repair Kit:\u003c\/strong\u003e The \u003cstrong\u003ecartridge and the changing tool\u003c\/strong\u003e come together, so there is nothing else to source to finish the job.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFixes the Valve, Not Just the Symptom:\u003c\/strong\u003e Replaces the \u003cstrong\u003eplug, seals, and spring\u003c\/strong\u003e as a unit, which clears \u003cstrong\u003esticking\u003c\/strong\u003e and \u003cstrong\u003eseat leakage\u003c\/strong\u003e caused by scale and wear.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStays in the Piping:\u003c\/strong\u003e The \u003cstrong\u003ecartridge-cage design\u003c\/strong\u003e lets you service the valve \u003cstrong\u003ewithout cutting out the valve body\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOEM Match for CGt Boilers:\u003c\/strong\u003e The \u003cstrong\u003eWeil-McLain 511-246-398\u003c\/strong\u003e is the factory number for the \u003cstrong\u003eCGt 3-way valve cartridge\u003c\/strong\u003e, which keeps ordering and fit simple.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhat does it fit?\u003c\/strong\u003e The \u003cstrong\u003e3-way valve on Weil-McLain CGt boilers\u003c\/strong\u003e, the \u003cstrong\u003eHoneywell VC-series\u003c\/strong\u003e valve that the \u003cstrong\u003e635-100-023 actuator\u003c\/strong\u003e drives. Confirm your boiler’s model and serial number against the parts list before ordering.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIs the changing tool included?\u003c\/strong\u003e Yes. The \u003cstrong\u003e511-246-398\u003c\/strong\u003e ships as the \u003cstrong\u003ecartridge with the Honeywell changing tool\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWill a new cartridge fix a dead actuator?\u003c\/strong\u003e No. The cartridge is the \u003cstrong\u003emechanical half\u003c\/strong\u003e of the valve. If the \u003cstrong\u003eactuator\u003c\/strong\u003e does not move the stem, test or replace the \u003cstrong\u003e635-100-023\u003c\/strong\u003e instead.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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":"Weil McLain","offers":[{"title":"Default Title","offer_id":67741629481138,"sku":"511-246-398","price":118.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/511-246-398.jpg?v=1792268519","url":"https:\/\/www.gsistore.com\/products\/weil-mclain-511-246-398","provider":"GSIstore","version":"1.0","type":"link"}