Thetford Water Saver Hand Spray??

Instead of buying the Thetford sprayer and attaching it as recommended, I put a tee in the supply line below the flush valve. then ran tubing with a valve and then connected a sink sprayer at the valve. When using the Thetford set up you have to flush in order to spray. My set up allows spraying with or without flushing and the valve allows pressure adjustment on the sprayer. When back on city water after using the pump I tended to get blow back in the face.:B

The valve lets me dampen the flow if needed and doubles as a shut off if needed.