Check the listing for details. Upgraded Thetford Aqua Magic V Toilet Water Valve Replacement Part# 31705 For RV. Color: As Shown in Pics, Condition: New. Listed at 11.88 USD. Manufacturer Part Number 31705. [Upgraded Structure] The material and structure of 31705 RV toilet water valve has been upgraded to ensure high performance and long service life of the water valve. [Easy Installation] Simply remove the old water valve and install the 31705 water valve in place, which can perfectly replace the function of the old water valve.Manufacturer Part Number 31705. [Upgraded Structure] The material and structure of 31705 RV toilet water valve has been upgraded to ensure high performance and long service life of the water valve. [Easy Installation] Simply remove the old water valve and install the 31705 water valve in place, which can perfectly replace the function of the old water valve.