Hello Sandy thanks for the picture. The valve in your picture appears to be a double waste valve like the Valterra Motorhome San Tee # T18A. This valve uses a 3" spigot with a 1-1/2" hub off to the side, both of which are the standard valve sizes. You could always measure the current valve to confirm this, but based on what I can see in your picture, the # T18A will be exactly what you need.
As far as a fresh water pump, they are all fairly universal, it really comes down to your requirements,... view full answer...
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