{"product_id":"kleenoil-hdu9778ku50-hydraulic-oil-filtration-system","title":"KLEENOIL HDU9778KU50 HYDRAULIC BY-PASS OIL FILTRATION SYSTEM","description":"\u003cp\u003e\u003cstrong data-start=\"4890\" data-end=\"4951\"\u003eHigh pressure. Controlled filtration. Maximum protection.\u003c\/strong\u003e\u003cbr data-start=\"4951\" data-end=\"4954\"\u003eEngineered for hydraulic systems requiring safe, continuous oil conditioning.\u003cbr data-start=\"5031\" data-end=\"5034\"\u003ePRV-controlled performance for demanding applications.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSuitable for systems of up to 540 litres oil\u003c\/li\u003e\n\u003cli\u003eMax input pressure 350 Bar\u003c\/li\u003e\n\u003cli\u003eLid torque pressure 18ft lbs. 3 bolt seal\u003c\/li\u003e\n\u003cli\u003eHeight: 165mm\u003c\/li\u003e\n\u003cli\u003eDiameter: 190mm\u003c\/li\u003e\n\u003cli\u003eWeight: 7.75kg\u003c\/li\u003e\n\u003cli\u003eWater Retention: 400ml\u003c\/li\u003e\n\u003cli\u003eSupplied with 1x HDFC1878kf50 Replacement Filter Cartridge\u003c\/li\u003e\n\u003cli\u003eComplete with bracket mounting kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-section-id=\"1pwqm1a\" data-start=\"178\" data-end=\"211\"\u003e🔹 Why You Need This System\u003c\/h3\u003e\n\u003cp data-start=\"213\" data-end=\"419\"\u003eHydraulic systems operate under extreme pressure, making them highly sensitive to contamination. Even small levels of particulate or moisture can lead to valve wear, reduced efficiency, and costly downtime.\u003c\/p\u003e\n\u003cp data-start=\"421\" data-end=\"798\"\u003eThe KLEENOIL HDU9778KU50HYD By-Pass Hydraulic Filtration Unit is specifically engineered to operate safely within high-pressure systems. By continuously removing contamination and water while the system is running, it maintains oil in near “as new” condition—extending oil life, improving performance, and protecting critical components.\u003c\/p\u003e\n\u003chr data-start=\"800\" data-end=\"803\"\u003e\n\u003ch3 data-section-id=\"1ar34yn\" data-start=\"805\" data-end=\"829\"\u003e🔹 Where It’s Used\u003c\/h3\u003e\n\u003cp data-start=\"831\" data-end=\"910\"\u003eDesigned specifically for pressurised systems, the HDU9778KU50HYD is ideal for:\u003c\/p\u003e\n\u003cul data-start=\"912\" data-end=\"1112\"\u003e\n\u003cli data-section-id=\"u5q2c5\" data-start=\"912\" data-end=\"949\"\u003eHydraulic systems and power packs\u003c\/li\u003e\n\u003cli data-section-id=\"1r170cn\" data-start=\"950\" data-end=\"984\"\u003eIndustrial lubrication systems\u003c\/li\u003e\n\u003cli data-section-id=\"310fd3\" data-start=\"985\" data-end=\"1031\"\u003eCompressors and high-pressure oil circuits\u003c\/li\u003e\n\u003cli data-section-id=\"gl9le1\" data-start=\"1032\" data-end=\"1066\"\u003eGearboxes operating under load\u003c\/li\u003e\n\u003cli data-section-id=\"pcrt5n\" data-start=\"1067\" data-end=\"1112\"\u003eMobile and industrial hydraulic equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1114\" data-end=\"1275\"\u003eIt is particularly suited to applications where \u003cstrong data-start=\"1162\" data-end=\"1201\"\u003esystem pressure is high or variable\u003c\/strong\u003e, requiring controlled filtration.\u003c\/p\u003e\n\u003chr data-start=\"1277\" data-end=\"1280\"\u003e\n\u003ch3 data-section-id=\"f87jlp\" data-start=\"1282\" data-end=\"1303\"\u003e🔹 How It Works\u003c\/h3\u003e\n\u003cp data-start=\"1305\" data-end=\"1494\"\u003eThe HDU9778KU50HYD operates as a \u003cstrong data-start=\"1338\" data-end=\"1377\"\u003econtrolled bypass filtration system\u003c\/strong\u003e, incorporating a dedicated \u003cstrong data-start=\"1405\" data-end=\"1444\"\u003ePressure Reducing Valve (PRV) block\u003c\/strong\u003e for safe operation in high-pressure environments.\u003c\/p\u003e\n\u003cul data-start=\"1496\" data-end=\"1821\"\u003e\n\u003cli data-section-id=\"jdoc6w\" data-start=\"1496\" data-end=\"1565\"\u003eOil is diverted from the main hydraulic line via a bypass circuit\u003c\/li\u003e\n\u003cli data-section-id=\"14vpxfc\" data-start=\"1566\" data-end=\"1676\"\u003eThe PRV block reduces pressure from up to \u003cstrong data-start=\"1610\" data-end=\"1632\"\u003e3000 PSI (207 bar)\u003c\/strong\u003e down to a safe filtration level (~40 PSI)\u003c\/li\u003e\n\u003cli data-section-id=\"96jzke\" data-start=\"1677\" data-end=\"1734\"\u003eOil flows steadily through the high-efficiency filter\u003c\/li\u003e\n\u003cli data-section-id=\"72au9j\" data-start=\"1735\" data-end=\"1773\"\u003eContaminants and water are removed\u003c\/li\u003e\n\u003cli data-section-id=\"18c9lce\" data-start=\"1774\" data-end=\"1821\"\u003eClean oil is returned back to the reservoir\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1823\" data-end=\"2018\"\u003eThis controlled process ensures \u003cstrong data-start=\"1855\" data-end=\"1899\"\u003eultra-fine filtration (down to 3 micron)\u003c\/strong\u003e and effective water removal, without affecting system pressure or performance.\u003c\/p\u003e\n\u003chr data-start=\"2020\" data-end=\"2023\"\u003e\n\u003ch3 data-section-id=\"1a3ebv5\" data-start=\"2025\" data-end=\"2046\"\u003e🔹 Key Benefits\u003c\/h3\u003e\n\u003cul data-start=\"2048\" data-end=\"2397\"\u003e\n\u003cli data-section-id=\"12gx19k\" data-start=\"2048\" data-end=\"2125\"\u003eSafe operation in high-pressure hydraulic systems (up to 350 bar pre-PRV)\u003c\/li\u003e\n\u003cli data-section-id=\"ku361v\" data-start=\"2126\" data-end=\"2177\"\u003eRemoves particles down to \u003cstrong data-start=\"2154\" data-end=\"2175\"\u003e3 micron absolute\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1soqvoz\" data-start=\"2178\" data-end=\"2235\"\u003eRemoves \u003cstrong data-start=\"2188\" data-end=\"2203\"\u003e99.9% water\u003c\/strong\u003e (free, emulsified, dissolved)\u003c\/li\u003e\n\u003cli data-section-id=\"1v9l67d\" data-start=\"2236\" data-end=\"2294\"\u003eExtends oil life by up to \u003cstrong data-start=\"2264\" data-end=\"2292\"\u003e10x in hydraulic systems\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"mmicdd\" data-start=\"2295\" data-end=\"2347\"\u003eProtects valves, pumps, and precision components\u003c\/li\u003e\n\u003cli data-section-id=\"1y36fcj\" data-start=\"2348\" data-end=\"2397\"\u003eReduces downtime, wear, and maintenance costs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2399\" data-end=\"2402\"\u003e\n\u003ch3 data-section-id=\"n7w4kl\" data-start=\"2404\" data-end=\"2466\"\u003e🔹 Installation (Hydraulic Integration with PRV Control)\u003c\/h3\u003e\n\u003cp data-start=\"2468\" data-end=\"2606\"\u003eThis unit is designed specifically for \u003cstrong data-start=\"2507\" data-end=\"2563\"\u003ebypass installation on pressurised hydraulic systems\u003c\/strong\u003e, using a controlled feed and return setup.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1089dr9\" data-start=\"2608\" data-end=\"2640\"\u003eTypical installation method:\u003c\/h3\u003e\n\u003cp data-start=\"2642\" data-end=\"2679\"\u003e\u003cstrong data-start=\"2642\" data-end=\"2677\"\u003e1. Pressure Tap-Off (Feed Line)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2680\" data-end=\"2787\"\u003e\n\u003cli data-section-id=\"10a31al\" data-start=\"2680\" data-end=\"2752\"\u003eTake a feed from a high-pressure point (test port or auxiliary port)\u003c\/li\u003e\n\u003cli data-section-id=\"187uxyp\" data-start=\"2753\" data-end=\"2787\"\u003ePressure can be up to 3000 PSI\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2789\" data-end=\"2820\"\u003e\u003cstrong data-start=\"2789\" data-end=\"2818\"\u003e2. PRV Block Installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2821\" data-end=\"2993\"\u003e\n\u003cli data-section-id=\"8lx19p\" data-start=\"2821\" data-end=\"2868\"\u003eOil passes through the integrated PRV block\u003c\/li\u003e\n\u003cli data-section-id=\"1tp3k5a\" data-start=\"2869\" data-end=\"2934\"\u003ePressure is reduced to approx. \u003cstrong data-start=\"2902\" data-end=\"2912\"\u003e40 PSI\u003c\/strong\u003e for safe filtration\u003c\/li\u003e\n\u003cli data-section-id=\"1j1t1n4\" data-start=\"2935\" data-end=\"2993\"\u003eBuilt-in relief valve protects against pressure spikes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2995\" data-end=\"3030\"\u003e\u003cstrong data-start=\"2995\" data-end=\"3028\"\u003e3. Filtration Unit Connection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3031\" data-end=\"3163\"\u003e\n\u003cli data-section-id=\"11av09u\" data-start=\"3031\" data-end=\"3086\"\u003eRegulated oil flows into the KLEENOIL filter vessel\u003c\/li\u003e\n\u003cli data-section-id=\"9a1db4\" data-start=\"3087\" data-end=\"3163\"\u003eFlow is controlled to approx. \u003cstrong data-start=\"3119\" data-end=\"3130\"\u003e4 L\/min\u003c\/strong\u003e, ensuring effective filtration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3165\" data-end=\"3200\"\u003e\u003cstrong data-start=\"3165\" data-end=\"3198\"\u003e4. Return Line (Low Pressure)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3201\" data-end=\"3307\"\u003e\n\u003cli data-section-id=\"uwsmrg\" data-start=\"3201\" data-end=\"3307\"\u003eClean oil is returned to:\n\u003cul data-start=\"3233\" data-end=\"3307\"\u003e\n\u003cli data-section-id=\"1e82e6a\" data-start=\"3233\" data-end=\"3267\"\u003eHydraulic tank \/ reservoir, or\u003c\/li\u003e\n\u003cli data-section-id=\"1px6n6x\" data-start=\"3270\" data-end=\"3307\"\u003eLow-pressure return line (\u0026lt;5 bar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3309\" data-end=\"3334\"\u003e\u003cstrong data-start=\"3309\" data-end=\"3332\"\u003e5. Mounting \u0026amp; Setup\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3335\" data-end=\"3471\"\u003e\n\u003cli data-section-id=\"l350bm\" data-start=\"3335\" data-end=\"3380\"\u003eInstall vertically using supplied bracket\u003c\/li\u003e\n\u003cli data-section-id=\"1mgyto9\" data-start=\"3381\" data-end=\"3420\"\u003eKeep hoses short and well-supported\u003c\/li\u003e\n\u003cli data-section-id=\"1y251vv\" data-start=\"3421\" data-end=\"3471\"\u003eEnsure access for servicing and filter changes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3473\" data-end=\"3651\"\u003eThis bypass configuration ensures \u003cstrong data-start=\"3507\" data-end=\"3574\"\u003econtinuous filtration without interfering with system operation\u003c\/strong\u003e, even in high-pressure environments.\u003c\/p\u003e\n\u003chr data-start=\"3653\" data-end=\"3656\"\u003e\n\u003ch3 data-section-id=\"1vlnzwy\" data-start=\"3658\" data-end=\"3687\"\u003e🔹 Technical Highlights\u003c\/h3\u003e\n\u003cul data-start=\"3689\" data-end=\"4094\"\u003e\n\u003cli data-section-id=\"18yx7nd\" data-start=\"3689\" data-end=\"3744\"\u003e\n\u003cstrong data-start=\"3691\" data-end=\"3706\"\u003eFiltration:\u003c\/strong\u003e 3 micron absolute (cellulose media)\u003c\/li\u003e\n\u003cli data-section-id=\"1tm1tnv\" data-start=\"3745\" data-end=\"3804\"\u003e\n\u003cstrong data-start=\"3747\" data-end=\"3761\"\u003eFlow Rate:\u003c\/strong\u003e Approx. 120–250 L\/h (regulated ~4 L\/min)\u003c\/li\u003e\n\u003cli data-section-id=\"19ucjiq\" data-start=\"3805\" data-end=\"3856\"\u003e\n\u003cstrong data-start=\"3807\" data-end=\"3826\"\u003eWater Capacity:\u003c\/strong\u003e Approx. 400ml per cartridge\u003c\/li\u003e\n\u003cli data-section-id=\"d0iawj\" data-start=\"3857\" data-end=\"3908\"\u003e\n\u003cstrong data-start=\"3859\" data-end=\"3882\"\u003eMax Input Pressure:\u003c\/strong\u003e Up to 350 bar (pre-PRV)\u003c\/li\u003e\n\u003cli data-section-id=\"1u3i8a7\" data-start=\"3909\" data-end=\"3955\"\u003e\n\u003cstrong data-start=\"3911\" data-end=\"3937\"\u003eOperating Temperature:\u003c\/strong\u003e -20°C to +120°C\u003c\/li\u003e\n\u003cli data-section-id=\"3ax9mi\" data-start=\"3956\" data-end=\"3999\"\u003e\n\u003cstrong data-start=\"3958\" data-end=\"3975\"\u003eConstruction:\u003c\/strong\u003e Aluminium LM6 housing\u003c\/li\u003e\n\u003cli data-section-id=\"gmyb2\" data-start=\"4000\" data-end=\"4053\"\u003e\n\u003cstrong data-start=\"4002\" data-end=\"4018\"\u003eSystem Type:\u003c\/strong\u003e PRV-controlled bypass filtration\u003c\/li\u003e\n\u003cli data-section-id=\"fbw1wr\" data-start=\"4054\" data-end=\"4094\"\u003e\n\u003cstrong data-start=\"4056\" data-end=\"4079\"\u003eReplacement Filter:\u003c\/strong\u003e HDFC1878KF50\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4096\" data-end=\"4099\"\u003e\n\u003ch3 data-section-id=\"nzclem\" data-start=\"4101\" data-end=\"4134\"\u003e🔹 Advanced System Features\u003c\/h3\u003e\n\u003cul data-start=\"4136\" data-end=\"4501\"\u003e\n\u003cli data-section-id=\"fd56e7\" data-start=\"4136\" data-end=\"4198\"\u003eIntegrated \u003cstrong data-start=\"4149\" data-end=\"4162\"\u003ePRV block\u003c\/strong\u003e for pressure reduction and relief\u003c\/li\u003e\n\u003cli data-section-id=\"1xyo0bz\" data-start=\"4199\" data-end=\"4270\"\u003eBuilt-in \u003cstrong data-start=\"4210\" data-end=\"4237\"\u003eoverpressure protection\u003c\/strong\u003e via spring-loaded poppet valve\u003c\/li\u003e\n\u003cli data-section-id=\"r3ykdd\" data-start=\"4271\" data-end=\"4333\"\u003eOptional \u003cstrong data-start=\"4282\" data-end=\"4297\"\u003esample port\u003c\/strong\u003e for live oil condition monitoring\u003c\/li\u003e\n\u003cli data-section-id=\"1wq451w\" data-start=\"4334\" data-end=\"4399\"\u003eDesigned for systems with \u003cstrong data-start=\"4362\" data-end=\"4397\"\u003ehigh pulsation or variable flow\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"a1ly3f\" data-start=\"4400\" data-end=\"4501\"\u003eMaintains consistent filtration without pressure disruption\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4503\" data-end=\"4506\"\u003e\n\u003ch3 data-section-id=\"w3i3n1\" data-start=\"4508\" data-end=\"4545\"\u003e🔹 Support \u0026amp; Application Advice\u003c\/h3\u003e\n\u003cp data-start=\"4547\" data-end=\"4769\"\u003eKLEENOIL UK provides a complete support service, working with you to identify the most effective filtration solution for your application. Our goal is simple—deliver consistently clean oil and long-term system performance.\u003c\/p\u003e\n\u003cp data-start=\"4771\" data-end=\"4845\"\u003eSpeak to our team directly on \u003cstrong data-start=\"4801\" data-end=\"4824\"\u003e+44 (0) 1977 682810\u003c\/strong\u003e for tailored advice.\u003c\/p\u003e","brand":"Kleenoil ","offers":[{"title":"Default Title","offer_id":52606135664987,"sku":null,"price":814.55,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1002\/7499\/5547\/files\/HDU9778KU50_HYDRAULIC.png?v=1776147245","url":"https:\/\/kleenoil.myshopify.com\/products\/kleenoil-hdu9778ku50-hydraulic-oil-filtration-system","provider":"Kleenoil  Hydraulics","version":"1.0","type":"link"}