Danfoss part # 180B4143 Piston kit

The Danfoss part # 180B4143 is a Piston kit, set of 5, used in APP 1.5, APP 1.8, APP 2.2, and APP 2.5 pumps. Made of high corrosion resistant Super Duplex Stainless Steel and PEEK. Should be serviced and replaced every 16,000 hours depending on severity of use, and inpsected once a year at least. The pistons are the heart of the pump regarding service. If the pistons break down, the pump will suffer a breakdown. In case of doubt - the pistons must be replaced.