The accessories of the pressure equipment are used in cases where the fluid temperature is high and this high temperature should not damage our pressure equipment.
In many industrial processes, high pressure steam is used for direct heating, mechanical work, combustion control and as a chemical reactant. Measuring the vapor pressure both at the end point used and at the stage Production (in a boiler) is important.
The problem with measuring the vapor pressure is the relatively high temperature, which, if measured directly by the measuring element, can damage it.
To overcome this problem, siphons are used between process and pressure gauges. The siphon acts as a cooling coil and protects the heat from discomfort against high temperature steam.
U-shaped siphon is suitable for vertical pipes and siphon coil for horizontal pipes.