- 1). Determine if the valve is metal or PVC. If the valve is made of PVC or a non-rusting metal, such as brass, the problem is most likely due to the edges of the valve becoming encrusted with a buildup of deposits from the last pump-out or gases inside the holding tank.
- 2). Apply a spray lubricant to all exposed surfaces of the valve and handle. Allow the lubricant to set for 30 minutes.
- 3). Tap gently on the valve handle with a rubber mallet -- in the direction of trying to close the valve -- in an attempt to break the seal. Do not hit the valve handle to try to force the vale open as you can end up bending or breaking the valve or handle assembly.
- 4). Wiggle the valve handle gently back and forth. Once the valve handle moves, even a fraction of an inch, apply the spray lubricant to all interior and exterior surfaces of the valve. Allow the lubricant to set for 5 minutes. Continue to work the handle back and forth, trying to open the valve a little further with each movement. Apply more spray lubricant as needed until the valve is working freely.
- 5). Heat the exterior surfaces of a rusted metal valve with a propane torch, causing the metal to expand. When the metal cools back down the metal will contract, often breaking the bond enough to free the valve. Apply spray lubricant to all interior and exterior valve surfaces and try to work the valve. If the treatments are not successful, the valve must be replaced.
SHARE
