A control valve is a valve that controls fluid flow by varying the size of the flow passage in response to a control signal. This allows for direct control of flow rate and, as a result, control of process quantities such as pressure, temperature, and liquid level. We supply Gestra control valves in South Africa.
As a Gestra supplier in South Africa, we offer bimetallic or thermostatic traps. These steam traps use temperature to separate steam and condensate. When steam enters a thermostatic trap, the heat expands a capsule within the trap, closing the drain valve. As more cooled condensate fills the trap, the capsule shrinks due to its lower temperature. This reopens the drain valve, allowing the condensate to drain. Thermostatic traps are efficient, leaking virtually no steam, and repairable inline, requiring little disassembly.
Condensate is denser than steam, so float steam traps work on that basis. As condensate accumulates in the trap, the float rises. This activates a valve that drains the condensate. When the condensate evaporates, all that remains is steam. The float drops, and the drain valve closes at this point. Float traps are incredibly dependable due to their design. We supply Gestra floating steam traps in South Africa.
A non-return valve allows a medium to flow in only one direction and ensures that the medium flows in the correct direction through a pipe when pressure conditions would otherwise cause reversed flow. However, the flow through the non-return valve causes a significant pressure drop, which must be considered when designing the system. We supply Gestra non-return valves in South Africa.