Threaded diaphragm seals

Instrumentation · Pressure

Nuova Fima MGS9/1B threaded diaphragm seals isolate the sensing element of pressure gauges, pressure switches and electronic pressure transmitters from corrosive, viscous, sediment-laden or high-temperature media. In the 1B0 version the diaphragm is welded, while in the 1BS it is mechanically clamped between the upper body and an intermediate ring; in both cases it is leak-tested to ensure complete separation between the fill fluid and the process medium. They are easily cleaned by removing the lower body, and their compact design makes them suitable for applications requiring frequent maintenance. They cover ranges from 0…0.1 to 0…40 bar (1B0) and from -1…0 to 0…40 bar (1BS), with a maximum working pressure of 60 bar and process temperature from -45 to +150 °C. The diaphragm can be AISI 316L, Monel 400, Hastelloy C276, tantalum, titanium, Alloy 600 or Alloy 825, or PTFE-coated, and the process connection AISI 316L, Monel 400, Hastelloy C276, polypropylene or PVC depending on the version. The additional error is ±0.5% for direct mounting and ±1% with capillary, and a NACE MR0175/MR0103 compliant version is available. At Tecnovent we advise you on the best combination of materials for your medium.