Threaded/ Flanged Type Water Level Gauges are offered in various sizes ranging from 15 to 20 mm. The Gauges have working pressures such as BOP 350 PSIG and BOP 250 PSIG at 8000 ° f and 435 ° f respectively. The Gauges are offered in threaded and flanged type. The Threaded/ Flanged Type Water Level Gauges are made using quality grade carbon steel and bronze.