An energy-producing regulator that is a component of a rectal irrigation system and designed to create the pressure required to propel the irrigation water into the rectum; it may also be used to inflate a catheter balloon. It typically includes a regulating device (e.g., a valve) used to control the air/water balance of the system, and a manually-operated hand pump. The irrigation is typically used to provoke the defecation reflex for the evacuation of the bowels to treat/prevent constipation and reduce the risk of faecal incontinence. This is a reusable device.