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Entire estate of houses built using these valves, and I know that mine aren't the only ones leaking . . .! Guess I will have to bite the bullet and replace . . .anyone know a circus with a few contortionists that are handy with a wrench!!

Hope somone can help me with this . . . the valves on my central heating pump are leaking, not a major leak as yet, but must be happening for some time (see fungus in pic) . The pump is a Grundfos, and the valves only have a short nut with a slot for screwdriver. To make matters worse, it is...

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