Backflow Reference Manual - Conbraco/Apollo

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4A-100 / DC4A / DCLF4A / DCLF4AN


1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3", 4", 6", 8", 10", 12"


The 4A-100 series is a double check assembly. Production began in 2008. The 1/2"-2" size is available in either a leaded body or lead free bronze body (Model LF). The check covers are a threaded access style. Spring tension will be contained when the cover is unscrewed. The check components are a modular glass filled PPO plastic and can be removed from the body for repair. Check discs are silicone. The 2 1/2"-8" size body is a fabricated body made from stainless steel tubing. There is a single access cover on the top attached to the body with a stainless steel quick connect coupling. The 10"-12" body is fused epoxy coated ductile iron. Access to the check is with a single access grooved coupling cover. The check components are modular in construction. The 2 1/2"-6" check modules are retained in the body with a snap in retainer clip. The 8"-12" check modules are bolted into the body. The check modules utilize a silicone rubber disc that can be replaced without releasing the spring tension.


Common repair parts are a very small subset of the 10,000 plus items BAVCO stocks. Please feel free to contact us direct at 800-458-3492 for pricing on items not listed or backflow prevention devices.