For emissions-free liquid level control, our mechanical dump valves and trunnion assemblies have a simple design that is reliable, easy to set up, and will stand up to harsh environments. Upstream vs downstream pressure in the valve is balanced via communication of the process fluid above and below the balancing diaphragm or piston in order to eliminate opening/closing forces due to pressure differential.
"Piston Balanced" means that the upstream and downstream pressures used to counterbalance the forces on the trim are separated by a piston, sealed with an O-ring, allowing for higher pressure differential.
Piston Balanced w/ Equal Percentage Trim (Throttling)
Equal Percentage trim for slower opening. Orientation of trim is better for erosive service because the trim moves up out of the flow path.
"Diaphragm Balanced" means that the upstream and downstream pressures used to counterbalance the forces on the trim are separated by a diaphragm.
Kimray offers different float sizes and shapes to accomodate different liquid specific gravities and vessel openings, and different materials for varying levels of corrosion resistance. The float is ordered seperately from the Trunnion Assembly and Float Arm, which it assembles to.
The Float Arm connects the Float to the Trunnion Assembly. Different lengths are available to achieve more/less upward force, and faster/slower valve opening.
These assemblies connect to the vessel and sense the liquid level, moving a lever up and down, linking to and operating the mechanical dump valve. A Float and Float Arm must also be ordered seperately to complete the trunnion assembly.