{"product_id":"hydro-force-revolution-knob-cover-na0859-metering-knob","title":"Hydro‑Force Revolution Knob Cover NA0859 – Protective Cover for Metering Knob","description":"\u003ch1\u003eHydro‑Force Revolution Knob Cover NA0859 – Protective Cover for Metering Knob\u003c\/h1\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eHydro‑Force Knob Cover NA0859\u003c\/strong\u003e is the genuine replacement protective cover for the \u003cstrong\u003emetering knob\u003c\/strong\u003e on the Hydro‑Force Revolution Injection Sprayer. This cover shields the dilution control knob from \u003cstrong\u003ewear, impact, chemical exposure and accidental adjustment\u003c\/strong\u003e, helping maintain accurate and consistent chemical metering during use.\u003c\/p\u003e\n\u003cp\u003eOver time, the original knob cover can become cracked, loose or chemically degraded. Replacing it with the correct \u003cstrong\u003eNA0859 knob cover\u003c\/strong\u003e ensures the metering knob remains protected and easy to adjust, preserving the sprayer’s performance and reliability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch5 style=\"margin: 12px 0 6px 0;\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cdiv style=\"line-height: 1.4;\"\u003e\n\u003cspan\u003e• Genuine Hydro‑Force Revolution replacement knob cover\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Protects the metering knob from damage and chemical exposure\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Helps maintain accurate dilution settings\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Durable, chemical‑resistant construction\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Easy to install and fits securely\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch5 style=\"margin: 12px 0 6px 0;\"\u003e\u003cstrong\u003eCompatible With\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cdiv style=\"line-height: 1.4;\"\u003e\n\u003cspan\u003e• Hydro‑Force Revolution Injection Sprayer\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• All Revolution‑style metering knob assemblies\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Systems originally supplied with \u003cstrong\u003eNA0859\u003c\/strong\u003e knob cover\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- ⭐ Inserted Parts Diagram Link (SEO‑Optimised) --\u003e\n\u003cp style=\"margin: 14px 0;\"\u003eFor a complete breakdown of every component on the sprayer, download the official \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0495\/8358\/7478\/files\/Revolution-Parts-List.pdf?v=1777980586\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e Hydro‑Force Revolution Inline Sprayer Parts Diagram \u0026amp; Parts List (PDF)\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch5 style=\"margin: 12px 0 6px 0;\"\u003e\u003cstrong\u003eWhen to Replace\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cdiv style=\"line-height: 1.4;\"\u003e\n\u003cspan\u003e• Knob cover is cracked, split or missing\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Metering knob becomes exposed to chemicals\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Dilution settings are being knocked or altered accidentally\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Cover no longer fits securely over the metering knob\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch5 style=\"margin: 12px 0 6px 0;\"\u003e\u003cstrong\u003eWhy Choose This Replacement Knob Cover\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eNA0859 Knob Cover\u003c\/strong\u003e is the correct, genuine Hydro‑Force replacement part for protecting the metering knob on your Revolution sprayer. It helps maintain accurate dilution control, prevents accidental adjustments and extends the life of the metering assembly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hydroforce","offers":[{"title":"Default Title","offer_id":56625783341442,"sku":"PC10835","price":7.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0495\/8358\/7478\/files\/photo_2026-05-07_10-42-14.jpg?v=1778146958","url":"https:\/\/carpet-cleaning-equipment.co.uk\/products\/hydro-force-revolution-knob-cover-na0859-metering-knob","provider":"Ashbys Cleaning Equipment","version":"1.0","type":"link"}