{"product_id":"guardair-n638-vacuum-liquid-shut-off-valve-30-55-gal","title":"Guardair N638 Vacuum Liquid Shut-off Valve 30-55 Gal","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUARDAIR N638 is a liquid shut-off valve assembly designed for industrial and commercial vacuum cleaners. It automatically stops airflow when liquid reaches a critical level inside the tank, protecting the vacuum motor from fluid ingestion. This component is a direct replacement assembly for compatible 30- and 55-gallon vacuum units. Installation is typically performed by maintenance technicians, industrial facility staff, or HVAC and mechanical service professionals who maintain wet-dry vacuum equipment on job sites or in commercial facilities.\u003c\/p\u003e\u003cp\u003eThe N638 liquid shut-off assembly is intended for use with 30-gallon and 55-gallon capacity vacuum cleaner models. It is suited for industrial job sites, commercial maintenance operations, and facilities where wet-dry vacuums handle liquid collection. This part is commonly replaced during preventive maintenance or after the float mechanism fails to seal properly, allowing the motor to remain protected from liquid damage during operation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLiquid shut-off assembly prevents motor damage by stopping airflow when liquid level is reached\u003c\/li\u003e\n\u003cli\u003eDesigned for 30-gallon and 55-gallon vacuum cleaner models\u003c\/li\u003e\n\u003cli\u003eComplete assembly included for straightforward replacement\u003c\/li\u003e\n\u003cli\u003eSold individually as a single-unit package\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement liquid shut-off assembly for compatible GUARDAIR 30-gallon and 55-gallon vacuum cleaner models.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eBefore servicing, power down and unplug the vacuum unit completely. Remove the tank lid or access panel as required to reach the shut-off assembly mounting point. This type of component is typically secured with standard hand tools and should be inspected for proper float movement and sealing after installation. Follow the equipment manufacturer's service documentation for correct reassembly and operational testing.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Liquid Shut-Off Assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Tank Sizes\u003c\/strong\u003e: 30 gallon and 55 gallon\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GUARDAIR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: N638\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUARDAIR","offers":[{"title":"Default Title","offer_id":51542520561970,"sku":"N638","price":102.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/486cc1a94c29f88f2b7a8ab08edf4937.jpg?v=1785902734","url":"https:\/\/voomisupply.com\/products\/guardair-n638-vacuum-liquid-shut-off-valve-30-55-gal","provider":"Voomi Supply","version":"1.0","type":"link"}