{"product_id":"verplas-mw154-150mm-white-metal-adjustable-extract-air-valve","title":"Verplas 150mm White Metal Adjustable Extract 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 MW154\u003c\/strong\u003e is a \u003cstrong\u003e150mm diameter white powder-coated steel adjustable exhaust (extract) air valve\u003c\/strong\u003e for mechanical ventilation systems. It provides an \u003cstrong\u003eadjustable, high-quality extract terminal\u003c\/strong\u003e for ceiling or wall mounting, with a male spigot for direct connection to the System 150 duct. The adjustable inner core allows flow to be set precisely at commissioning for accurate whole-house ventilation balancing.\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;\"\u003eExtract\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\u003eExtract vs Supply:\u003c\/strong\u003e The MW154 is an \u003cstrong\u003eextract air valve\u003c\/strong\u003e — for use at stale air removal points (bathrooms, kitchens, utility rooms). The equivalent \u003cstrong\u003eMW153 is the supply air valve\u003c\/strong\u003e. Both share the same 150mm System 150 spigot.\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:700;\"\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:700;color:#008377;text-decoration:underline;margin-bottom:8px;\"\u003eWhite Epoxy Powder-Coated Steel\u003c\/div\u003e\n\u003cdiv style=\"font-size:.92em;color:#333;\"\u003eRobust \u003cstrong\u003epowder-coated steel construction\u003c\/strong\u003e provides a premium, durable finish suited to both domestic bathrooms 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:700;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 enables precise airflow setting on site — critical for balancing extract rates across multiple room terminals in MVHR and dMEV systems.\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:700;color:#008377;text-decoration:underline;margin-bottom:8px;\"\u003e150mm Male Spigot\u003c\/div\u003e\n\u003cdiv style=\"font-size:.92em;color:#333;\"\u003eConnects directly inside the System 150 duct socket — \u003cstrong\u003eno adaptor required\u003c\/strong\u003e for standard System 150 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:700;color:#008377;text-decoration:underline;margin-bottom:8px;\"\u003eCeiling or Wall Mounting\u003c\/div\u003e\n\u003cdiv style=\"font-size:.92em;color:#333;\"\u003eSuitable for \u003cstrong\u003ehorizontal ceiling or vertical wall installation\u003c\/strong\u003e, with the male spigot orientating into the duct as required.\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:700;color:#008377;text-decoration:underline;margin-bottom:8px;\"\u003eMVHR \u0026amp; dMEV Extract Point\u003c\/div\u003e\n\u003cdiv style=\"font-size:.92em;color:#333;\"\u003eIdeal terminal for \u003cstrong\u003eMVHR extract branches, continuous mechanical extract, and single-room fan extract\u003c\/strong\u003e in bathrooms, kitchens, and utility rooms.\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:700;color:#008377;text-decoration:underline;margin-bottom:8px;\"\u003eMatched to MW153 Supply Valve\u003c\/div\u003e\n\u003cdiv style=\"font-size:.92em;color:#333;\"\u003ePair with the \u003cstrong\u003eMW153 supply valve\u003c\/strong\u003e for a consistent, professional appearance across all supply and extract terminals.\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:700;\"\u003eSpecifications\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:.92em;margin:16px 0;\"\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;\"\u003eMW154\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;\"\u003eExhaust \/ Extract 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 Supply SKU\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;color:#555;border-bottom:1px solid #ddd;\"\u003eMW153\u003c\/td\u003e\n\u003c\/tr\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:700;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"margin-bottom:8px;border:1px solid #c8e6e3;border-radius:4px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:11px 14px;cursor:pointer;font-weight:600;font-size:.95em;list-style:none;\"\u003eHow is the MW154 extract valve adjusted?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:.92em;color:#333;background:#fff;\"\u003eRotate the inner disc to restrict or open the aperture. Set each valve at commissioning using a \u003cstrong\u003eflow measuring instrument\u003c\/strong\u003e to achieve the target extract rate (typically 8 l\/s for a bathroom under Part F).\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #c8e6e3;border-radius:4px;overflow:hidden;\"\u003e\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 use in a bathroom?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:.92em;color:#333;background:#fff;\"\u003eYes — the MW154 is a \u003cstrong\u003eprimary choice for bathroom, kitchen, and utility extract terminals\u003c\/strong\u003e in whole-house mechanical ventilation systems.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #c8e6e3;border-radius:4px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:11px 14px;cursor:pointer;font-weight:600;font-size:.95em;list-style:none;\"\u003eWhat is the material finish?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:.92em;color:#333;background:#fff;\"\u003eWhite epoxy powder-coated steel, providing a \u003cstrong\u003edurable, cleanable surface\u003c\/strong\u003e resistant to the humid conditions in bathrooms and kitchens.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #c8e6e3;border-radius:4px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:11px 14px;cursor:pointer;font-weight:600;font-size:.95em;list-style:none;\"\u003eDoes the MW154 include a back-draught damper?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:.92em;color:#333;background:#fff;\"\u003eThe valve itself does not include a damper. In MVHR systems, back-draught prevention is typically provided by the unit. For single-fan extract, a \u003cstrong\u003edamper can be fitted at the VKC363 connector\u003c\/strong\u003e upstream.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #c8e6e3;border-radius:4px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#fff;padding:11px 14px;cursor:pointer;font-weight:600;font-size:.95em;list-style:none;\"\u003eCan this valve be used in a commercial installation?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:.92em;color:#333;background:#fff;\"\u003eYes — the robust steel construction makes the MW154 suitable for \u003cstrong\u003elight commercial applications\u003c\/strong\u003e as well as domestic use.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Verplas","offers":[{"title":"Default Title","offer_id":64756044890461,"sku":"VAV6-E","price":23.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/MW154FRE_150mm_Round_White_Metal_Fire_Rated_Exhaust_Ceiling_Valve.jpg?v=1779355234","url":"https:\/\/qualityheating.co.uk\/products\/verplas-mw154-150mm-white-metal-adjustable-extract-air-valve","provider":"AIZO Quality Heating","version":"1.0","type":"link"}