Overview Reviews Product Description Universal Adapter Converts Thetford System to Valterra/ Grentec/Anonda caps and hose adapters. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Valterra UNIVERSAL SEWER ADAPTER - THETFORD Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments