{"product_id":"compact-adjustable-float-valve-precision-reservoir-level-management","title":"Compact Adjustable Float Valve – Precision Reservoir Level Management","description":"\u003csection\u003e\n  \u003ch3\u003eCompact Adjustable Float Valve – Precision Reservoir Level Management\u003c\/h3\u003e\n  \u003cp\u003eMaintaining a consistent water level is the cornerstone of a stable hydroponic environment. Our Compact Adjustable Float Valve is the professional solution for automating your nutrient reservoir top-ups, ensuring your system never runs dry. Engineered for versatility, this valve features an adjustable arm that allows you to fine-tune the water line with a simple turn of a nut. Whether you are connecting to a gravity-fed header tank or directly to a mains water supply, this float valve provides a reliable, mechanical fail-safe that stabilises your nutrient concentration and protects your pumps from running air.\u003c\/p\u003e\n  \n  \u003chr\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eBest For:\u003c\/strong\u003e Automated nutrient reservoir top-ups, gravity-fed header tank systems, and protecting submersible pumps from running dry in high-evaporation environments.\u003c\/p\u003e\n  \n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePrecision-Adjustable Float Arm:\u003c\/strong\u003e Features a robust adjustment nut that allows you to alter the angle of the float. This gives you granular control over the final water level without needing to reposition the entire valve body.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVersatile 13mm Barbed Inlet:\u003c\/strong\u003e Equipped with a standard 13mm barb, making it perfectly compatible with standard Australian low-density poly pipe (LDPE) and irrigation supply lines.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMains Pressure Capable:\u003c\/strong\u003e Engineered to handle a variety of pressures, these valves are reliable enough to be connected directly to a mains water supply or a high-capacity backup reservoir.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh-Impact, Chemical-Resistant Build:\u003c\/strong\u003e Manufactured from premium, horticultural-grade polymers designed to resist the corrosive effects of concentrated mineral salts and pH adjusters.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompact 240mm Profile:\u003c\/strong\u003e The streamlined design (approx. 240mm total length) makes it ideal for installation in tight spaces, including smaller nutrient tanks, propagation trays, or auto-pot systems.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMechanical Reliability:\u003c\/strong\u003e Operates entirely via gravity and buoyancy, providing a fail-safe automation solution that functions without the need for electronic sensors or external power.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInlet Connection:\u003c\/strong\u003e 13mm Barbed Fitting\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTotal Length:\u003c\/strong\u003e Approx. 240mm (Valve \u0026amp; Float)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAdjustment Mechanism:\u003c\/strong\u003e Manual Locking Nut (Variable Angle)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e UV-Stabilised, High-Impact Polymer\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Hydroponics, Aquaponics, and Stock Watering Systems\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eInstallation \u0026amp; Maintenance Tips\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBulkhead Installation:\u003c\/strong\u003e For a professional, leak-proof mount, install the valve through the reservoir wall using a 13mm grommet. Ensure the valve is mounted high enough to allow for your desired maximum water depth.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThe Header Tank Strategy:\u003c\/strong\u003e Connect this valve to a separate 'header' tank filled with plain water or a pre-mixed nutrient solution. As your plants transpire, the float valve will automatically top up the main reservoir, keeping your pH and CF levels more stable between manual changes.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDebris Protection:\u003c\/strong\u003e If connecting directly to a mains supply or an outdoor tank, we recommend installing an in-line filter before the float valve to prevent grit from interfering with the internal seal.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRoutine Testing:\u003c\/strong\u003e During your weekly reservoir change, manually lift and lower the float to ensure the pivot point remains free of mineral salt build-up and that the valve achieves a total shut-off.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eIdeal For (Uses)\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHoliday Automation:\u003c\/strong\u003e Ensuring your indoor grow room stays hydrated for extended periods without manual intervention.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCommercial Run-to-Waste:\u003c\/strong\u003e Maintaining a constant head of water in mixing tanks to ensure consistent pressure for delivery pumps.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEvaporation Compensation:\u003c\/strong\u003e Automatically replacing water lost to heat and dry air, preventing nutrient solution from becoming overly concentrated (hot).\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"Holland Forge","offers":[{"title":"Default Title","offer_id":48417350352996,"sku":"8904","price":16.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0713\/6487\/0244\/files\/ChatGPTImageMay15_2026_06_27_47PM.png?v=1778840911","url":"https:\/\/www.greenhousepolytunnels.com.au\/products\/compact-adjustable-float-valve-precision-reservoir-level-management","provider":"Greenhouse \u0026 Polytunnels","version":"1.0","type":"link"}