Never before has a backflow preventer been so easy to service, to winterize, or to fit in tight spaces. The new Wilkins 375 series is revolutionary and offers unsurpassed serviceability and performance in a smaller, shorter package. The Wilkins 375 backflow is designed to provide top access to test cocks, shut-off valves and the check assembly, winterizing, cleaning and repair are a snap. By removing the entire 375 backflow preventer composite housing between the shutoff valves, you're able to reduce the time it normally takes.