Product description The GARDENA Control and Stop Valve – as part of the GARDENA Sprinklersystem – can be used for manually regulating and shutting off individual pop-up sprinklers or entire sprinkler groups. The water flow can be infinitely adjusted or completely shut off. The hinged, spherical cover disappears into the casing when opened, thus posing no problem during lawn mowing. Thanks to the wide rim, no grass can grow into the cover. A removable filter prevents contamination of the casing when the cover is open. The GARDENA Control and Stop Valve has a 3/4" male thread. --discontinued, replacement is G8264