sancat
Mechanical
- Jul 1, 2002
- 69
We have received some stainless steel valves from a medical specialties laboratory to repair their leaking. They are similar to spherical valves (the ones that have a steel ball with a hole and they turn 90 degrees to open or close), but instead of a ball these valves have a truncated cone.
We thought it was a piece of cake, just have the female and male cones rectified (both are stainless), and verified they were so with Prussia’s blue. We did it. But no matter what we did, they leaked.
Since I have not found them on the web I am thinking that this is a local invention, which does not work, or they exist but they have been “repaired” in the past changing them in some way.
Pressure is very low, perhaps 8 feet of water column, and liquid is very thick (cough medicine)
Does anyone know their name, and have any ideas on how to prevent leaking?
Do they need a spring to push down the cone?
We thought it was a piece of cake, just have the female and male cones rectified (both are stainless), and verified they were so with Prussia’s blue. We did it. But no matter what we did, they leaked.
Since I have not found them on the web I am thinking that this is a local invention, which does not work, or they exist but they have been “repaired” in the past changing them in some way.
Pressure is very low, perhaps 8 feet of water column, and liquid is very thick (cough medicine)
Does anyone know their name, and have any ideas on how to prevent leaking?
Do they need a spring to push down the cone?