These adapters use a pressure assisted seal which means the more pressure that is applied, the better the seal. Connect to pressure gauges which have male NPT, BSPP or Metric threads - without using a wrench or thread sealant. Quickly switch between gauges while calibrating or testing without worrying about leaks!
Ralston Instruments is a family-owned leader in pressure calibration and test equipment, trusted worldwide for durable, high-performance systems that simplify testing and deliver traceable, accurate results. From hydrostatic testing to digital pressure monitoring, Ralston solutions improve accuracy, efficiency, and safety across field and lab applications. All products are designed and manufactured in the USA.