{"product_id":"kti-lspc-080-4-00-load-holding-valve-nc-2-way-p-o-c-4-way-cartridge-double-acting-dump-trailer-hydraulic-pumps","title":"KTI LSPC-080-4-00 Load Holding Valve — NC 2-Way + P.O.C. 4-Way Cartridge — Double-Acting Dump Trailer Hydraulic Pumps","description":"\u003ch2\u003eKTI LSPC-080-4-00 Load Holding Valve — Normally-Closed 2-Way with Pilot-Operated Check, 4-Way Cartridge — for Double-Acting KTI Hydraulic Power Units\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eLSPC-080-4-00\u003c\/strong\u003e is the factory load-holding cartridge valve installed in all KTI double-acting hydraulic power units. It combines a \u003cstrong\u003enormally-closed 2-way solenoid valve\u003c\/strong\u003e and a \u003cstrong\u003epilot-operated check valve\u003c\/strong\u003e into a single 4-way cartridge — responsible for holding your dump bed in position when the pump is off, and releasing it on command when you power down.\u003c\/p\u003e\n\n\u003cp\u003eWhen this valve wears out, symptoms include: \u003cstrong\u003edump bed slowly drifting down\u003c\/strong\u003e under load with the pump off, failure to retract the cylinder on command, internal oil bypass that makes the pump run but not produce pressure, or weeping past the cartridge body. This is the standard replacement cartridge — typically used with the square coil LC-08-S-5B on the down circuit of double-acting pumps.\u003c\/p\u003e\n\n\u003ch3\u003e🔧 How It Works\u003c\/h3\u003e\n\u003cp\u003eThe valve performs two critical functions:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoad holding (energized off):\u003c\/strong\u003e Blocks flow from ports 1→2 and 4→3, preventing the bed from dropping under load. Allows free flow 2→1 and 3→4 for unloaded conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControlled release (energized on):\u003c\/strong\u003e When the solenoid is powered, the valve opens the 4→3 path, allowing controlled bed lowering. Pilot ratio is 2.5:1 — the valve opens at 1\/2.5 of the load pressure, giving smooth controlled lowering without slam.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number (KTI)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLSPC-080-4-00\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNC 2-way solenoid + P.O.C. in 4-way cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLoad holding valve (typically down circuit on double-acting units)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePilot Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5:1\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Coil\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLC-08-S-5B (square coil, typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Socket\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15\/16\" deep socket\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Torque\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18 ft-lb maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOil Viscosity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.4 – 420 cSt\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePairing Valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLSV2-08-4CO directional valve (up circuit)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKTI Hydraulics (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e✅ Compatible Hydraulic Power Units\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKTI DC26-S\u003c\/strong\u003e single-acting power unit (load holding circuit)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKTI DC-4000 series\u003c\/strong\u003e dump trailer pumps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKTI DC-45597, DC-45598\u003c\/strong\u003e variants\u003c\/li\u003e\n  \u003cli\u003eAll standard \u003cstrong\u003eKTI double-acting hydraulic power units\u003c\/strong\u003e with #8 cavity\u003c\/li\u003e\n  \u003cli\u003eUsed on dump trailers from Load Trail, Big Tex, PJ Trailer, Griffin, Diamond C, and most major brands using KTI pumps\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e🔁 Cross-References\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKTI OEM:\u003c\/strong\u003e LSPC-080-4-00\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoad holding valve\u003c\/strong\u003e for KTI double-acting power units\u003c\/li\u003e\n  \u003cli\u003eCompanion to \u003cstrong\u003eLSV2-08-4CO\u003c\/strong\u003e (directional valve) — the two work together in double-acting circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e💡 Pro Tips — Installation\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCheck for contamination first.\u003c\/strong\u003e Before installing the new valve, visually inspect the cavity in the manifold for burrs or metal shavings. Contamination is the #1 cause of valve failure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubricate all O-rings and back-up rings.\u003c\/strong\u003e Coat every O-ring on the valve cartridge with clean hydraulic fluid before insertion. A dry O-ring can shear or extrude into the cavity during install, causing immediate leakage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHand-tighten first,\u003c\/strong\u003e then use a 15\/16\" deep socket to final-torque.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDo not exceed 18 ft-lb.\u003c\/strong\u003e Overtightening will damage the cartridge body and the manifold cavity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAfter install,\u003c\/strong\u003e cycle the hydraulic system a few times without load to purge any air and verify proper operation before loading the trailer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e❓ FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMy dump bed is drifting down — is this the right part?\u003c\/strong\u003e\u003cbr\u003e\nMost likely yes. Bed drift on a KTI double-acting system is almost always caused by the load-holding valve leaking internally (wear, contamination, or coil failure). This is the factory replacement.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow do I know if it's the LSPC or the LSV2 that's bad?\u003c\/strong\u003e\u003cbr\u003e\nIf the bed drifts DOWN under its own weight with the pump off, it's typically the \u003cstrong\u003eLSPC-080-4-00 (load holding)\u003c\/strong\u003e. If the bed won't extend (pump runs but nothing happens), it's more often the LSV2-08-4CO (directional). Many service techs replace both as a rebuild pair.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a new coil too?\u003c\/strong\u003e\u003cbr\u003e\nNot usually. If your old coil still clicks\/energizes when voltage is applied, reuse it. Only replace the coil (LC-08-S-5B) if it's visibly damaged, melted, or electrically open.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes this fit power-up \/ gravity-down pumps?\u003c\/strong\u003e\u003cbr\u003e\nThis specific cartridge is for double-acting (power up \/ power down) pumps. For power-up\/gravity-down systems, the valve configuration differs — call us at \u003cstrong\u003e517-225-1991\u003c\/strong\u003e to confirm before ordering.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQuestions?\u003c\/strong\u003e Call or text AAA Trailer at \u003cstrong\u003e517-225-1991\u003c\/strong\u003e — we stock the full KTI hydraulic line and can help you identify the right replacement part. Same-day shipping from Howell, Michigan.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e📞 Call\/Text: 517-225-1991   🌐 AAATrailer.com\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\u003ch3\u003eRelated KTI Hydraulic Products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aaatrailer.com\/products\/kti-lspc-080-4-00-m-load-holding-valve-with-manual-override-emergency-bed-down-release-for-dead-battery-conditions-double-acting-dump-trailer-pumps\"\u003eKTI LSPC-080-4-00-M Load Holding Valve with Manual Override (upgrade)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aaatrailer.com\/products\/kti-lsv2-08-4co-directional-control-valve-4-way-2-position-spool-cartridge-power-up-circuit-for-double-acting-dump-trailer-hydraulic-pumps\"\u003eKTI LSV2-08-4CO Directional Valve (up-circuit pair)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/aaatrailer.com\/products\/products-kti-lc-08-s-5b-10v-dc-hydraulic-solenoid-coil\"\u003eKTI LC-08-S-5B Square Coil Actuator\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KTI","offers":[{"title":"Default Title","offer_id":52766510154037,"sku":"LSPC-080-4-00","price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/9144\/0181\/files\/kti-lspc-080-4-00-load-holding-valve-nc-2-way-p-o-c-4-w-sq.jpg?v=1782503796","url":"https:\/\/aaatrailer.com\/products\/kti-lspc-080-4-00-load-holding-valve-nc-2-way-p-o-c-4-way-cartridge-double-acting-dump-trailer-hydraulic-pumps","provider":"AAA Trailer","version":"1.0","type":"link"}