Noshok type 10H Standard & Elevated Pressure,5000 PSI Bolted, Replaceable Diaphragm Seals

https://massmeasure.com/product/noshok-500-series-316-stainless-steel-liquid-filled-gauges-abs-steel-case-dry-pressure-gauges-vacuum-to-20000-psi/

NOSHOK STAINLESS STEEL 316 DRY PRESSURE GAUGES-400 series-Vacuum and compound ranges through 0 psi to 20,000 psi

• Designed to isolate the pressure measuring instrument from high temperatures,
  or corrosive or viscous process media
• Can be used for remote mounting of pressure instrument(s) with capillary
• Utilizes a replaceable diaphragm clamped between the flanged metal housings
  with an o-ring seal to create a leak-free union
• Process connection sizes from 1/4″ NPT through 1-1/2″ NPT
• Flushing port connection is an available option that allows the wetted areas of
  the seal to be cleaned, or the process vented without removing the unit from the line
• Consider instrument size, pressure range, media composition, ambient and operating
  temperature, and maximum working pressure when selecting
• Capillaries and cooling elements are available for elevated process temperatures, see details
• Fill fluid must be compatible with process media; i.e. Glycerine may become volatile in
  conjunction with a strong oxidizing agent such as chlorine, forms of oxygen or
  peroxide and nitric acids