{"product_id":"598413-genuine-bendix®-hydraulic-relay-valve-hr-1","title":"598413 | Genuine Bendix® Hydraulic Relay Valve HR-1","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003cbr\u003eA hydraulic relay valve \u003cstrong\u003e598413 \u003c\/strong\u003eis a control valve used in hydraulic (and sometimes pneumatic) systems to use a small control pressure to operate a larger flow of fluid at higher pressure. In simple terms, it works like a “power booster” for fluid systems.\u003cbr\u003e\u003c\/p\u003e\n\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto scroll-mt-(--header-height)\" dir=\"auto\" data-turn-id=\"54b61570-7613-4ddf-9004-df82e6013a6d\" data-testid=\"conversation-turn-11\" data-scroll-anchor=\"false\" data-turn=\"user\" tabindex=\"-1\"\u003e\u003c\/article\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 598413\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: New\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Bendix\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"353\" data-start=\"160\"\u003e\u003cstrong\u003eFits 598413 \u003c\/strong\u003eFor Commercial trucks \u0026amp; medium\/heavy-duty vehicles, Ford F-series medium\/heavy trucks (e.g., F-600, F-700, F-800)\u003c\/p\u003e\n\u003cp data-end=\"703\" data-start=\"585\"\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003ePurpose of using 598413:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp data-end=\"292\" data-start=\"260\"\u003e\u003cstrong\u003e1. Multiply Control Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"303\" data-start=\"293\"\u003eIt allows:\u003c\/p\u003e\n\u003cul data-end=\"379\" data-start=\"304\"\u003e\n\u003cli data-end=\"332\" data-start=\"304\"\u003e\n\u003cp data-end=\"332\" data-start=\"306\"\u003eA \u003cstrong data-end=\"332\" data-start=\"308\"\u003esmall input pressure\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"379\" data-start=\"333\"\u003e\n\u003cp data-end=\"379\" data-start=\"335\"\u003eTo control a \u003cstrong data-end=\"379\" data-start=\"348\"\u003elarger high-pressure output\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"458\" data-start=\"381\"\u003eThis means an operator doesn’t need to directly control full system pressure.\u003c\/p\u003e\n\u003cp data-end=\"497\" data-start=\"465\"\u003e\u003cstrong\u003e2. Reduce Operator Effort\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"531\" data-start=\"498\"\u003eIn heavy equipment or trucks, it:\u003c\/p\u003e\n\u003cul data-end=\"638\" data-start=\"532\"\u003e\n\u003cli data-end=\"590\" data-start=\"532\"\u003e\n\u003cp data-end=\"590\" data-start=\"534\"\u003eReduces the force needed at the pedal or control lever\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"638\" data-start=\"591\"\u003e\n\u003cp data-end=\"638\" data-start=\"593\"\u003eMakes controls smoother and more responsive\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"861\" data-start=\"640\"\u003eFor example, in commercial truck brake systems using components from companies like \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eBendix Corporation\u003c\/span\u003e\u003c\/span\u003e, a hydraulic relay valve helps apply strong braking force without requiring excessive pedal effort.\u003c\/p\u003e\n\u003cp data-end=\"899\" data-start=\"868\"\u003e\u003cstrong\u003e3. Improve Response Time\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"903\" data-start=\"900\"\u003eIt:\u003c\/p\u003e\n\u003cul data-end=\"1015\" data-start=\"904\"\u003e\n\u003cli data-end=\"936\" data-start=\"904\"\u003e\n\u003cp data-end=\"936\" data-start=\"906\"\u003eAllows faster pressure buildup\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"980\" data-start=\"937\"\u003e\n\u003cp data-end=\"980\" data-start=\"939\"\u003eReduces delay in large hydraulic circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1015\" data-start=\"981\"\u003e\n\u003cp data-end=\"1015\" data-start=\"983\"\u003eImproves overall system reaction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1087\" data-start=\"1017\"\u003eThis is especially important in heavy vehicles or industrial machines.\u003c\/p\u003e\n\u003cp data-end=\"1132\" data-start=\"1094\"\u003e\u003cstrong\u003e4. Protect Sensitive Components\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1183\" data-start=\"1133\"\u003eInstead of routing high pressure directly through:\u003c\/p\u003e\n\u003cul data-end=\"1239\" data-start=\"1184\"\u003e\n\u003cli data-end=\"1192\" data-start=\"1184\"\u003e\n\u003cp data-end=\"1192\" data-start=\"1186\"\u003ePedals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1215\" data-start=\"1193\"\u003e\n\u003cp data-end=\"1215\" data-start=\"1195\"\u003eSmall control valves\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1239\" data-start=\"1216\"\u003e\n\u003cp data-end=\"1239\" data-start=\"1218\"\u003eElectronic controls\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1327\" data-start=\"1241\"\u003eThe relay valve isolates them from extreme pressure, increasing durability and safety.\u003c\/p\u003e\n\u003cp data-end=\"1377\" data-start=\"1334\"\u003e\u003cstrong\u003e5. Allow Remote or Automatic Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1411\" data-start=\"1378\"\u003eRelay valves make it possible to:\u003c\/p\u003e\n\u003cul data-end=\"1502\" data-start=\"1412\"\u003e\n\u003cli data-end=\"1465\" data-start=\"1412\"\u003e\n\u003cp data-end=\"1465\" data-start=\"1414\"\u003eControl large hydraulic cylinders from a distance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1502\" data-start=\"1466\"\u003e\n\u003cp data-end=\"1502\" data-start=\"1468\"\u003eIntegrate with automated systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-end=\"703\" data-start=\"585\"\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"703\" data-start=\"585\"\u003e\u003cstrong\u003eSigns of a Bad Hydraulic Relay Valve 598413:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp data-start=\"286\" data-end=\"318\"\u003e\u003cstrong\u003e1. Delayed Brake Response\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"319\" data-end=\"422\"\u003e\n\u003cli data-start=\"319\" data-end=\"346\"\u003e\n\u003cp data-start=\"321\" data-end=\"346\"\u003eYou press the brake pedal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"347\" data-end=\"389\"\u003e\n\u003cp data-start=\"349\" data-end=\"389\"\u003eBrakes apply slowly or with hesitation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"390\" data-end=\"422\"\u003e\n\u003cp data-start=\"392\" data-end=\"422\"\u003eVehicle takes longer to stop\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"424\" data-end=\"485\"\u003eThis happens when the valve isn’t relaying pressure properly.\u003c\/p\u003e\n\u003cp data-start=\"492\" data-end=\"530\"\u003e\u003cstrong\u003e2. Weak or Inconsistent Braking\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"531\" data-end=\"654\"\u003e\n\u003cli data-start=\"531\" data-end=\"590\"\u003e\n\u003cp data-start=\"533\" data-end=\"590\"\u003eBrake pedal feels normal, but stopping power is reduced\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"591\" data-end=\"621\"\u003e\n\u003cp data-start=\"593\" data-end=\"621\"\u003eBraking force feels uneven\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"622\" data-end=\"654\"\u003e\n\u003cp data-start=\"624\" data-end=\"654\"\u003eVehicle may pull to one side\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"656\" data-end=\"714\"\u003eThe valve may be sticking internally or not fully opening.\u003c\/p\u003e\n\u003cp data-start=\"721\" data-end=\"766\"\u003e\u003cstrong\u003e3. Brake Pedal Feels Hard or Very Soft\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"767\" data-end=\"882\"\u003e\n\u003cli data-start=\"767\" data-end=\"820\"\u003e\n\u003cp data-start=\"769\" data-end=\"820\"\u003e\u003cstrong data-start=\"769\" data-end=\"783\"\u003eHard pedal\u003c\/strong\u003e → valve stuck closed or restricted\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"821\" data-end=\"882\"\u003e\n\u003cp data-start=\"823\" data-end=\"882\"\u003e\u003cstrong data-start=\"823\" data-end=\"844\"\u003eSoft\/spongy pedal\u003c\/strong\u003e → internal leakage inside the valve\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"884\" data-end=\"1022\"\u003eIn systems using valves from manufacturers like \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eBendix Corporation\u003c\/span\u003e\u003c\/span\u003e, internal seal failure can cause pressure bypassing.\u003c\/p\u003e\n\u003cp data-start=\"1029\" data-end=\"1067\"\u003e\u003cstrong\u003e4. Fluid Leaks Around the Valve\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1068\" data-end=\"1176\"\u003e\n\u003cli data-start=\"1068\" data-end=\"1115\"\u003e\n\u003cp data-start=\"1070\" data-end=\"1115\"\u003eVisible brake fluid around fittings or body\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1116\" data-end=\"1144\"\u003e\n\u003cp data-start=\"1118\" data-end=\"1144\"\u003eWet lines near the valve\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1145\" data-end=\"1176\"\u003e\n\u003cp data-start=\"1147\" data-end=\"1176\"\u003eGradual loss of brake fluid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1178\" data-end=\"1227\"\u003eSeal or housing failure is common in older units.\u003c\/p\u003e\n\u003cp data-start=\"1234\" data-end=\"1281\"\u003e\u003cstrong\u003e5. Brakes Dragging (Not Releasing Fully)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1282\" data-end=\"1375\"\u003e\n\u003cli data-start=\"1282\" data-end=\"1325\"\u003e\n\u003cp data-start=\"1284\" data-end=\"1325\"\u003eVehicle feels like it’s being held back\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1326\" data-end=\"1345\"\u003e\n\u003cp data-start=\"1328\" data-end=\"1345\"\u003eBrakes overheat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1346\" data-end=\"1375\"\u003e\n\u003cp data-start=\"1348\" data-end=\"1375\"\u003eBurning smell from wheels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1377\" data-end=\"1429\"\u003eThe valve may not be returning to its rest position.\u003c\/p\u003e\n\u003cp data-start=\"1436\" data-end=\"1475\"\u003e\u003cstrong\u003e6. Uneven Pressure Between Axles\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1476\" data-end=\"1492\"\u003eIn heavy trucks:\u003c\/p\u003e\n\u003cul data-start=\"1493\" data-end=\"1585\"\u003e\n\u003cli data-start=\"1493\" data-end=\"1541\"\u003e\n\u003cp data-start=\"1495\" data-end=\"1541\"\u003eRear brakes may apply too strong or too weak\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1542\" data-end=\"1585\"\u003e\n\u003cp data-start=\"1544\" data-end=\"1585\"\u003eLoad-sensitive braking may act abnormal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1592\" data-end=\"1639\"\u003e\u003cstrong\u003e7. Warning Lights (If Integrated System)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1640\" data-end=\"1668\"\u003eOn modern hydraulic systems:\u003c\/p\u003e\n\u003cul data-start=\"1669\" data-end=\"1757\"\u003e\n\u003cli data-start=\"1669\" data-end=\"1714\"\u003e\n\u003cp data-start=\"1671\" data-end=\"1714\"\u003eABS or brake warning light may illuminate\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1715\" data-end=\"1757\"\u003e\n\u003cp data-start=\"1717\" data-end=\"1757\"\u003ePressure imbalance detected by sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-end=\"703\" data-start=\"585\"\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"476\" data-start=\"97\"\u003e\u003cstrong data-end=\"151\" data-start=\"97\"\u003eAbout the Manufacturer – Bendix:\u003c\/strong\u003e\u003cbr data-end=\"154\" data-start=\"151\"\u003e\u003c\/p\u003e\n\u003cp data-start=\"96\" data-end=\"400\"\u003e\u003cstrong data-start=\"54\" data-end=\"64\"\u003eBendix\u003c\/strong\u003e is a leading manufacturer of \u003cstrong data-start=\"94\" data-end=\"160\"\u003eair brake systems, safety technologies, and control components\u003c\/strong\u003e for commercial trucks, buses, and trailers. Known for innovations in \u003cstrong data-start=\"230\" data-end=\"274\"\u003ebraking, stability, and traction control\u003c\/strong\u003e, Bendix supplies OEM and aftermarket parts across North America. It is a subsidiary of \u003cstrong data-start=\"362\" data-end=\"378\"\u003eKnorr-Bremse\u003c\/strong\u003e, a global leader in braking systems.\u003c\/p\u003e","brand":"Bendix","offers":[{"title":"Default Title","offer_id":50515676561655,"sku":"598413","price":2375.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/a20791d140ca7c27cbbc8_l__00467.jpg?v=1771956222","url":"https:\/\/forcetruckparts.com\/products\/598413-genuine-bendix%c2%ae-hydraulic-relay-valve-hr-1","provider":"Force Truck Parts","version":"1.0","type":"link"}