| 1.
| Remove old gasket and thoroughly clean the surface on boiler and on cover plate. Sometimes it is neceessary to buff each surface. |
| 2. |
Place TOPOG-E Gasket on handhole cover plate. Be sure the gasket is pushed down tight on the plate. Do not use any grease, lubricant or adhesive. |
 |
| 3. |
After cover plate is in boiler and gasket is in place, make one last cleaning swipe of the mating surface in the boiler. Use a rag wrapped around your finger. |
 |
| 4. |
Set crab, then center plate in opening and tighten nut enough to give a snug fit. Then snug up with 1/4 turn of wrench. |
 |
Special Notes |
If gasket leaks while pressure is being built up, tighten only enough to stop leakage. |
| Gaskets on the bottom of a boiler shell are usually hard to install without leaking because particles of scale or sand tend to run down onto the mating surface between the time the surface is cleaned and the handhole cover plate is put in place ready to be tightened. When this happens, drain the boiler again and start over, or expect to replace the gasket in a very short time. |
| As Pressure builds up in the boiler the bolt and crab will loosen. It takes some time for the gasket to reach its ultimate compression, so the operator should watch this for several days and keep the bolt tight until it no longer loosens. This is especially true if the boiler is operated intermittently; i.e., shut off at night to allow pressure to drop. In this case, vacuum pressure in the boiler would suck the cover plate in and allow the water to leak out of the boiler. |
| TOPOG-E Bolt Gaskets (When Required) Should Be Used With TOPOG-E Handhole Gaskets. |
Non- Warranty of Results |
Our TOPOG-E materials are sold for steam, water or air use only. Grease and solvents are destructive and should be avoided. Out recommendations for use of TOPOG-E gaskets are based on tests believed reliable. Since their installation and use is beyond our control we cannot gurarantee the results, whether or not such use is in accordance with directions. We disclaim any responsibility. |