Specifications：Protective parts:Other：Hign-concerned Chemical:None：Item Weight:0.12kg：Item Height:3cm：Item Width:3cm：Item Length:7cm：Model Name:For Karcher K 7.20MX K 720MX K 7.21MX：Item Type:Covers & Ornamental Mouldings：Material:Stainless Steel：Origin:Mainland China：Specifications：：Conditions: Brand New：Type: Control Piston：Material: Brass + 304 stainless steel：Replacement OEM:4.553 268.0：Compatible For：：For Karcher K 7.20 MX 720MX：For Karcher K 7.20MX, K 720MX, K 7.21MX：Package Included:：1x 2x Control Valve Piston Kit：Fearture:：*The control piston is an additional protection against overpressure. It opens the internal water circuits and reduces the outlet pressure.：*Symptoms of damage are reduced operating pressure, intermittent operation with the gun switched on, or complete lack of pressure with the pump running.：*The product is a REPLACEMENT of the original Kärcher valve with the number 4.553.268.0：Is compatible with models: For Kärcher K 7.20MX, K 720MX, K 7.21MX