{"product_id":"pvc-air-volume-regulating-valve-75-200mm-manual-check-valve","title":"PVC Air Volume Regulating Valve 75–200mm Manual Check Valve","description":"\n\u003ch2\u003ePVC Air Volume Regulating Valve – Manual Round Check Valve for Home Ventilation\u003c\/h2\u003e\n\u003cp\u003eTake full control of your home's airflow with this durable \u003cstrong\u003ePVC Air Volume Regulating Valve\u003c\/strong\u003e. Available in multiple sizes (75mm, 110mm, 150mm, 160mm, and 200mm), this round manual check valve is designed to fit standard round duct systems, giving you precise airflow regulation without the need for electricity.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're managing ventilation in a bathroom, kitchen, utility room, or HVAC duct network, this valve makes it easy to open, close, or adjust airflow to any zone — no tools, no power required.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Size Compatibility:\u003c\/strong\u003e Available in 75mm, 110mm, 150mm, 160mm, and 200mm to suit a wide range of duct systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable PVC Construction:\u003c\/strong\u003e Lightweight yet sturdy, resistant to moisture and corrosion for long-lasting performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManual Regulating Design:\u003c\/strong\u003e Simple hand-operated structure allows easy airflow adjustment — no electricity needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRound Check Valve Function:\u003c\/strong\u003e Prevents backflow and allows directional airflow control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Use:\u003c\/strong\u003e Ideal for home ventilation systems, HVAC ducts, bathrooms, kitchens, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy to Install:\u003c\/strong\u003e Straightforward fitting into existing round duct openings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e PVC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Air Volume Regulating \/ Manual Check Valve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e 75mm \/ 110mm \/ 150mm \/ 160mm \/ 200mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Required:\u003c\/strong\u003e None (electricity-free)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × PVC Air Volume Regulating Valve (size as selected)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to monitor and lighting variations, the actual color of the item may differ slightly from images. Please allow 1–2cm measuring deviation due to manual measurement.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-400cm-sealing-tape-faucet-sealing-tape-oil-free-leak-proof-water-pipe-gas-pipeline-sealing-tape\"\u003e1PC 400cm Sealing Tape – Oil-Free Leak Proof Water Pipe \u0026amp; Gas Pipeline Sealing Tape\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-multi-use-faucet-bubbler-wrenches-6-sizes-sink-wrenches-detach-tool-for-kitchen-bathroom-faucet-parts-repair-spanner\"\u003e1PC Multi-Use Faucet Bubbler Wrenches – 6 Sizes for Kitchen \u0026amp; Bathroom Faucet Repair\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-exhaust-duct-interface-pipe-hose-connector-for-ac-exhaust-pipe-extension-joint-does-not-require-clamp-ring-comes-with-thread\"\u003e1PC Exhaust Duct Interface Pipe Hose Connector for AC Exhaust Pipe Extension Joint\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What sizes does this PVC air regulating valve come in?\u003c\/h4\u003e\n\u003cp\u003eA: This manual check valve is available in five sizes: 75mm, 110mm, 150mm, 160mm, and 200mm, making it compatible with a wide range of standard round duct openings used in home ventilation systems.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this air valve require electricity or a power source to operate?\u003c\/h4\u003e\n\u003cp\u003eA: No — this is a fully manual, electricity-free regulating valve. You simply adjust it by hand to control or restrict airflow as needed, making it simple and energy-efficient to use.\u003c\/p\u003e\n\u003ch4\u003eQ: What is this PVC check valve suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: It is suitable for use in home HVAC ducts, bathroom and kitchen exhaust ventilation systems, utility rooms, and any round duct network where manual airflow regulation or backflow prevention is needed.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What sizes does this PVC air regulating valve come in?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This manual check valve is available in five sizes: 75mm, 110mm, 150mm, 160mm, and 200mm, making it compatible with a wide range of standard round duct openings used in home ventilation systems.\"}}, {\"@type\": \"Question\", \"name\": \"Does this air valve require electricity or a power source to operate?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No — this is a fully manual, electricity-free regulating valve. 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