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M500 / M500N / M500Z / LFM500 / LFM500N / LFM500Z

M500 / M500N / M500Z / LFM500 / LFM500N / LFM500Z

The Ames M400 and M500 are reduced pressure principle assemblies. This model was produced under the Hunter name from 2000-2002. In 2002 Watts bought the Hunter models and began producing it as the Ames M400. The "M" designation refers to Ames Maxim brand name. The body is stainless steel tubing. To access the check components a sleeve is mounted over the access cover. On the 2 1/2"-4" size the sleeve slides over the body. On the 6"-10" sizes the sleeve is attached by two grooved couplings. The check components are modular and constructed of Noryl plastic. The check utilizes a torsion spring which is contained when the check module is removed from the body. The check spring must be extended and controlled with a pin or screwdriver to replace the check disc. The check disc is either an EPDM or silicone. The body may be up to 1" shorter than shown in the dimension chart on versions produced in 2003 or earlier. The relief valve body attaches to the outside of the check body and is pressurized with an external RV sensing line.

M500 / M500N / M500Z / LFM500 / LFM500N / LFM500Z

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