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Ames LFM300

Lead Free* Double Check Detector Assemblies

The Maxim LFM300 Double Check Detector Assemblies are used to prevent backflow of pollutants, that are objectionable but not toxic, from entering the potable water supply system. The Maxim LFM300 may be installed under continuous pressure service and may be subjected to backpressure. The Maxim LFM300 are used primarily on fire line sprinkler systems when it is necessary to monitor unauthorized use of water. For use in non-health hazard applications. The LFM300 features Lead Free* construction to comply with Lead Free* installation requirements.


2 in. (50mm)

The Lead Free* Double Check Detector Assemblies shall consist of two independent Tri-Link Check modules within a single housing, sleeve access port, four test cocks and two drip tight shutoff valves. Tri-Link Checks shall be removable and serviceable, without the use of special tools. The housing shall be constructed of 304 (Schedule 40) stainless steel pipe with groove end connections. Double Check Valve Assemblies shall comply with state codes and standards, where applicable, requiring reduced lead content. Tri-Link Checks shall have reversible elastomer discs and in operation shall produce drip tight closure against the reverse flow of liquid caused by backpressure or backsiphonage. The bypass assembly consists of a meter registering either gallon or cubic feet measurements, a double check valve assembly and required test cocks. Assembly shall be a Maxim LFM300 as manufactured by the Ames Company.