Expert Answers about GMC Van

• Replacement Double Waste Valve
• To replace your current double waste valve you'll just need the Double RV Waste Valves - Heel Inlet - Rotating - 3" Hub and 1-1/2" Hub # T68 and some Valterra ABS Solvent Cement - 1/4 Pint # A05-0303 for a secure connection.
  view full answer...