Description
This part is a direct replacement. It is made to the exact specifications for your E1 and E2M models. Replacing it is a common fix that gets your pump running cleanly again If the valve fails and stays open, oil drains into the pump body when it is off. Then, when you start the pump again, that extra oil gets pushed out right away. You will see a big puff of smoke. The pump might also struggle to start because it is trying to compress all that oil. A bad button valve is a common cause of these problems.
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