Mueller Fill & drain valve.
1.2 GPM.
Made in USA
Mueller Fill & drain valve Comes complete and assembled.
Includes parts shown. Diaphragm, and stainless fill pipe are already installed.
For small tanks less than 700 gallon 1.2 gpm typically with a 1/3 hp motor
Original Parts by Paul Mueller Co
Made in USA
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M-30945K Diaphragm kit
M-30945K Diaphragm kit
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M-92860 (2.0 gpm) Mueller Complete Fill & drain valve 1600 to 2000 gallon tanks with 1.5 hp pump motor
M-8801151 (3.0 gpm)Mueller Complete Fill & drain valve 2000 gallon and larger tanks with 1.5 hp pump motor
updated March 2026


