High efficiency domestic circulator pump with 6m max head, 130 mm port-to-port length and 1" threaded connections (normally used with 1/2" unions). The Wilo Yonos PICO range are glandless domestic circulator pumps designed to minimise power consumption within a home heating system. As well as being highly energy efficient, they are designed with ease of installation in mind, with Wilo's unique Wilo-Connector to allow toolless electrical connection, and a special pump venting procedure. They feature Wilo's Red Button technology which makes set-up and commissioning very simple and straightforward. Replacement for Wilo product code 4164012.