Pentax Ultra 18S WRAS Approved Surface Mounted Multistage Pumps 230v and 400v. Stainless steel multistage pumps for the pumping of clean water WRAS approved. Used for boosting water, boosting sets, irrigation, water treatment, heating and air conditioning. Non self priming. Inlet 2". Outlet 1 1/2". 400 Lpm. 23 to 47 Hm