{"product_id":"longrun-12v-fresh-water-diaphragm-pump-4-5l-min-1-2-gpm-adjustable-pressure-switch-self-priming","title":"Longrun 12V Fresh Water Diaphragm Pump 4.5L\/min (1.2 GPM) — Adjustable Pressure Switch, Self-Priming","description":"\u003cp\u003e\u003cstrong\u003eLONGRUN Fresh Water Pump is a 12V DC self-priming diaphragm pump with an adjustable electronic pressure switch delivering up to 4.5 L\/min (1.2 GPM) and auto-shutoff at about 85 PSI for reliable water supply in RVs, boats, and gardens.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact, maintenance-friendly pump is engineered for mobile and outdoor use where a steady freshwater flow and automatic protection matter. Built with a brushed copper motor, vibration-damping mounts, and a built-in overpressure\/overvoltage safety switch, it fits applications from camper showers to garden irrigation. It’s designed to start quietly, protect itself from pressure spikes, and resume operation once pressure normalizes.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the adjustable pressure switch help in everyday use?\u003c\/h3\u003e\n\u003cp\u003eThe integrated electronic pressure switch senses outlet pressure and automatically shuts the motor off when pressure approaches the 85 PSI limit, preventing overwork and water hammer. It restarts automatically when pressure drops, giving hands-free operation for taps, showers, and sprayers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAuto-off near 85 PSI to limit strain on pump components\u003c\/li\u003e\n  \u003cli\u003eAutomatic restart when outlet pressure returns to normal\u003c\/li\u003e\n  \u003cli\u003ePre-wired quick-plug simplifies installation for 12V systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this pump run quietly and resist vibration on a vehicle or boat?\u003c\/h3\u003e\n\u003cp\u003eYes — the pump base uses soft rubber mounting brackets that isolate vibration and reduce operational noise, making it more suitable for enclosed spaces like RV cabins and boat bilges. The soft mounts lower resonance, so the pump runs with less rattle against mounting surfaces.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSoft rubber bracket support to reduce vibration noise\u003c\/li\u003e\n  \u003cli\u003eCompact footprint for tight mounting locations\u003c\/li\u003e\n  \u003cli\u003eSmoother operation for interior installations such as camper showers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and design features improve durability and performance?\u003c\/h3\u003e\n\u003cp\u003eLONGRUN uses a brushed pure copper coil motor to improve efficiency and life expectancy versus lower-grade windings. The diaphragm design is tolerant of intermittent operation and the electronic protections guard against overvoltage and excessive back-pressure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBrushed pure copper coil motor for reduced resistance and improved longevity\u003c\/li\u003e\n  \u003cli\u003eDiaphragm architecture suited to freshwater and intermittent pumping\u003c\/li\u003e\n  \u003cli\u003eFactory-tested electrical and pressure performance before shipping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow straightforward is installation and what are common uses?\u003c\/h3\u003e\n\u003cp\u003eInstallation is simple for 12V systems: use the quick-plug electrical connector, mount the pump on a flat surface with included soft mounts, and plumb inlet\/outlet lines with appropriate fittings. It’s versatile for many low-pressure water tasks where compact, self-priming delivery is needed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eQuick-plug connector for easy 12V wiring\u003c\/li\u003e\n  \u003cli\u003eSelf-priming capability avoids manual siphoning on start-up\u003c\/li\u003e\n  \u003cli\u003eTypical uses: RV and camper taps, marine freshwater systems, garden sprayers, portable showers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The LONGRUN 12V Fresh Water Pump suits RV owners, boaters, vanlifers, and gardeners who need a dependable, compact freshwater pump with automatic pressure control. It’s a good fit for installations where quiet running, protected operation, and easy mounting matter. If you want a tested, self-priming pump that resumes operation automatically and includes vibration isolation, this model offers a practical balance of flow, protection, and durability for mobile and outdoor water systems.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What power and flow does this pump deliver?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It runs on 12V DC, delivers about 4.5 L\/min (1.2 GPM), and has an electronic cutoff near 85 PSI.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is it easy to install in an RV or boat?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It uses a quick-plug electrical connector, soft mounting brackets, and standard inlet\/outlet fittings for quick installation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Longrun","offers":[{"title":"Default Title","offer_id":56832178061652,"sku":"B08KDRDHB6","price":49.43,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/longrun-front-view-pump_fe2d4577-fbec-49b1-b63c-1c2181adadbc.jpg?v=1787024271","url":"https:\/\/gardenluxe.co.uk\/products\/longrun-12v-fresh-water-diaphragm-pump-4-5l-min-1-2-gpm-adjustable-pressure-switch-self-priming","provider":"Gardenluxe Uk","version":"1.0","type":"link"}