Pressure gauge siphons protect gauges from the effects of steam and other hot media by dissipating temperatures and also reducing the effects of rapid pressure surges. Coiled or pigtail siphons are installed water-filled and can collect condensate from steam inside the coil or pigtail portion of the siphon. They are designed with two threaded ends that separate the threaded process on one end with the gauge connected to the other. Instead of the traditional looped design, finned siphons have a reduced orifice with lateral fins that create maximum surface area to absorb heat transfer of steam before it reaches the gauge. They are commonly used in chemical, oil, gas, and pulp and paper applications.