Winters Pressure Sensing Accessories protect pressure measurement equipment from damage caused by pressure surges, superheated media, and more. The accessories include siphons that protect pressure gauges, transmitters, and switches from the effects of high-temperature media. Pressure snubbers protect instruments by suppressing pressure pulsations and spikes. Manual isolation and throttling needle valves isolate instruments from the sensed media, while block and bleed valves isolate instruments with the added ability to bleed off unwanted pressure. Both valves allow for quick and easy removal and maintenance of measurement instruments without shutting down the process.