The INVALCO Diatroller is a combination liquid level controller and liquid valve. Closed, the force of the weighted rod on top exceeds the liquid pressure under the valve diaphragm. As the liquid level rises in the vessel, the increased head pressure raises the diaphragm, opening the valve. Gas from the top of pressure vessels is piped to the valve diaphragm’s top side to equalize pressure.
Specifications
| Body Material | Cast Iron, A-126 |
| Body Cover Material | Cast Iron, A-126 |
| End Connections | 2″ FNPT Threaded; 3″, 4″ Class 125# FF Flanges. |
| Diaphragm Material | Nylon Reinforced Buna N Diaphragm |
| Maximum Differential Operating Pressure | 125 psi |
| Temperature Limits | -20°F to 250°F |
| Plug Type | Replaceable, Buna N |
| Seat Type | Removable, Cast Iron |
| Other Wetted Parts | 303 Stainless |