{"product_id":"verplas-150mm-white-metal-adjustable-supply-air-valve","title":"Verplas 150mm White Metal Adjustable Supply Air Valve","description":"\u003cdiv style=\"font-size: 16px; font-family: Arial,sans-serif; color: #222; max-width: 900px; margin: 0 auto; line-height: 1.6;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eVerplas MW155\u003c\/strong\u003e is a \u003cstrong\u003e150mm diameter white powder-coated steel adjustable supply air valve\u003c\/strong\u003e for mechanical ventilation systems. Designed for \u003cstrong\u003eceiling or wall installation\u003c\/strong\u003e, it provides a controlled, adjustable supply air outlet that can be balanced to achieve the correct flow rate at each supply point. The valve is manufactured from \u003cstrong\u003ewhite epoxy powder-coated steel\u003c\/strong\u003e, with an adjustable inner core for on-site flow setting, and a male spigot for direct connection to the 150mm System 150 duct.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; justify-content: space-around; background: #e6f4f3; border-radius: 6px; padding: 8px 4px; margin: 18px 0;\"\u003e\n\u003cdiv style=\"text-align: center; padding: 12px 8px;\"\u003e\n\u003cdiv style=\"font-size: 1.5em; font-weight: 800; color: #008377;\"\u003e150mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: .82em; color: #444; margin-top: 2px;\"\u003eSpigot Diameter\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center; padding: 12px 8px;\"\u003e\n\u003cdiv style=\"font-size: 1.5em; font-weight: 800; color: #008377;\"\u003eSteel\u003c\/div\u003e\n\u003cdiv style=\"font-size: .82em; color: #444; margin-top: 2px;\"\u003ePowder-Coated White\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center; padding: 12px 8px;\"\u003e\n\u003cdiv style=\"font-size: 1.5em; font-weight: 800; color: #008377;\"\u003eAdjustable\u003c\/div\u003e\n\u003cdiv style=\"font-size: .82em; color: #444; margin-top: 2px;\"\u003eFlow Setting\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center; padding: 12px 8px;\"\u003e\n\u003cdiv style=\"font-size: 1.5em; font-weight: 800; color: #008377;\"\u003eSupply\u003c\/div\u003e\n\u003cdiv style=\"font-size: .82em; color: #444; margin-top: 2px;\"\u003eAir Function\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center; padding: 12px 8px;\"\u003e\n\u003cdiv style=\"font-size: 1.5em; font-weight: 800; color: #008377;\"\u003eCeiling\/Wall\u003c\/div\u003e\n\u003cdiv style=\"font-size: .82em; color: #444; margin-top: 2px;\"\u003eMounting\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #005c54; padding: 12px 16px; margin: 14px 0; border-radius: 0 4px 4px 0; font-size: .95em;\"\u003e\n\u003cstrong\u003eSupply vs Extract:\u003c\/strong\u003e The MW155 is a \u003cstrong\u003esupply air valve\u003c\/strong\u003e — for use on incoming air distribution points. The equivalent \u003cstrong\u003eMW154 is the extract air valve\u003c\/strong\u003e for removing stale air. Both use the same 150mm System 150 spigot connection.\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; margin: 28px 0 16px; border-radius: 4px; font-size: 1.05em; font-weight: bold;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 14px; margin: 16px 0;\"\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; text-decoration: underline; margin-bottom: 8px;\"\u003eWhite Epoxy Powder-Coated Steel\u003c\/div\u003e\n\u003cdiv style=\"font-size: .92em; color: #333;\"\u003eManufactured from \u003cstrong\u003erobust steel with a white powder-coat finish\u003c\/strong\u003e, providing durability and a clean aesthetic suited to both domestic and commercial interiors.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; text-decoration: underline; margin-bottom: 8px;\"\u003eAdjustable Inner Core\u003c\/div\u003e\n\u003cdiv style=\"font-size: .92em; color: #333;\"\u003eThe \u003cstrong\u003eadjustable central disc\u003c\/strong\u003e allows airflow to be set precisely on site — essential for balancing multi-room ventilation systems to design flow rates.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; text-decoration: underline; margin-bottom: 8px;\"\u003e150mm Male Spigot\u003c\/div\u003e\n\u003cdiv style=\"font-size: .92em; color: #333;\"\u003eThe male spigot connects directly inside the System 150 duct socket — \u003cstrong\u003eno adaptor or additional fitting required\u003c\/strong\u003e for standard installations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; text-decoration: underline; margin-bottom: 8px;\"\u003eCeiling or Wall Installation\u003c\/div\u003e\n\u003cdiv style=\"font-size: .92em; color: #333;\"\u003eSuitable for \u003cstrong\u003ehorizontal ceiling mounting or vertical wall mounting\u003c\/strong\u003e depending on the system layout and room configuration.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; text-decoration: underline; margin-bottom: 8px;\"\u003eMVHR \u0026amp; dMEV Supply Outlets\u003c\/div\u003e\n\u003cdiv style=\"font-size: .92em; color: #333;\"\u003eDesigned for use as a \u003cstrong\u003eterminal supply point in MVHR, positive input ventilation (PIV), or mechanical supply systems\u003c\/strong\u003e in domestic and light commercial settings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 16px 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; text-decoration: underline; margin-bottom: 8px;\"\u003eMatched to MW154 Extract Valve\u003c\/div\u003e\n\u003cdiv style=\"font-size: .92em; color: #333;\"\u003eUse alongside the \u003cstrong\u003eMW154 extract valve\u003c\/strong\u003e for a consistent appearance across supply and extract terminals in the same installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; margin: 28px 0 16px; border-radius: 4px; font-size: 1.05em; font-weight: bold;\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: .92em; margin: 16px 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; color: #333; width: 45%; border-bottom: 1px solid #ddd;\"\u003eVerplas SKU\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; color: #555; border-bottom: 1px solid #ddd;\"\u003eMW155\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; color: #333; width: 45%; border-bottom: 1px solid #ddd;\"\u003eFunction\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; color: #555; border-bottom: 1px solid #ddd;\"\u003eSupply Air Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; color: #333; width: 45%; border-bottom: 1px solid #ddd;\"\u003eDiameter\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; color: #555; border-bottom: 1px solid #ddd;\"\u003e150 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; color: #333; width: 45%; border-bottom: 1px solid #ddd;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; color: #555; border-bottom: 1px solid #ddd;\"\u003eWhite epoxy powder-coated steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; color: #333; width: 45%; border-bottom: 1px solid #ddd;\"\u003eInner Disc\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; color: #555; border-bottom: 1px solid #ddd;\"\u003eAdjustable for flow setting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; color: #333; width: 45%; border-bottom: 1px solid #ddd;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; color: #555; border-bottom: 1px solid #ddd;\"\u003eCeiling or wall\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; color: #333; width: 45%; border-bottom: 1px solid #ddd;\"\u003eSpigot\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; color: #555; border-bottom: 1px solid #ddd;\"\u003e150mm male — connects to System 150 duct socket\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600; color: #333; width: 45%; border-bottom: 1px solid #ddd;\"\u003eMatching Extract SKU\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; color: #555; border-bottom: 1px solid #ddd;\"\u003eMW154\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; padding: 10px 16px; margin: 28px 0 16px; border-radius: 4px; font-size: 1.05em; font-weight: bold;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #c8e6e3; border-radius: 4px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 11px 14px; cursor: pointer; font-weight: 600; font-size: .95em; list-style: none;\"\u003eHow do I adjust the airflow on this valve?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: .92em; color: #333; background: #fff;\"\u003eThe inner disc is rotated to narrow or widen the opening, increasing or reducing flow. Use an \u003cstrong\u003eanemometer or flow hood\u003c\/strong\u003e at commissioning to set each valve to its design flow rate.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #c8e6e3; border-radius: 4px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 11px 14px; cursor: pointer; font-weight: 600; font-size: .95em; list-style: none;\"\u003eCan I use this valve on an extract duct?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: .92em; color: #333; background: #fff;\"\u003eNo — the MW155 is specifically designed as a \u003cstrong\u003esupply valve\u003c\/strong\u003e. For extract, use the \u003cstrong\u003eVerplas MW154\u003c\/strong\u003e, which has the same form factor optimised for exhaust airflow.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #c8e6e3; border-radius: 4px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 11px 14px; cursor: pointer; font-weight: 600; font-size: .95em; list-style: none;\"\u003eDoes this valve need a back-draught damper?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: .92em; color: #333; background: #fff;\"\u003eIn MVHR systems, the unit itself provides back-draught prevention. For single-fan supply systems, consider adding a damper at the fan or duct connector if required by the system design.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #c8e6e3; border-radius: 4px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 11px 14px; cursor: pointer; font-weight: 600; font-size: .95em; list-style: none;\"\u003eWhat finish is the valve?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: .92em; color: #333; background: #fff;\"\u003eWhite epoxy powder-coated steel (equivalent to \u003cstrong\u003eRAL 9010 white\u003c\/strong\u003e). The finish is durable for indoor use.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"margin-bottom: 8px; border: 1px solid #c8e6e3; border-radius: 4px; overflow: hidden;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 11px 14px; cursor: pointer; font-weight: 600; font-size: .95em; list-style: none;\"\u003eIs this valve suitable for a bathroom supply?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 12px 14px; font-size: .92em; color: #333; background: #fff;\"\u003eBathrooms typically use extract valves. Supply valves are more commonly used in \u003cstrong\u003eliving rooms, bedrooms, or hallways\u003c\/strong\u003e as part of a balanced whole-house ventilation system.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Verplas","offers":[{"title":"Default Title","offer_id":64755793723741,"sku":"VAV6-S","price":23.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/MW155150mmRoundMetalWhiteCoatedSupplyValve.jpg?v=1779354675","url":"https:\/\/qualityheating.co.uk\/products\/verplas-150mm-white-metal-adjustable-supply-air-valve","provider":"AIZO Quality Heating","version":"1.0","type":"link"}