Starting at $202.34
  • Usually ships in 3-4 weeks



  • All welded metal construction
  • Flush design eliminates pockets
  • Easy to clean diaphragm area
  • Provided with a 1in MNPT process connection
  • Compact size to fit space-restricted areas
  • No gaskets or bolts
  • For use on pressure gauges ≤3.5in from 60 to 3000 psi
  • 316L stainless steel top housing & diaphragm material
  • 1⁄4 & 1⁄2 NPT instrument connection
  • glycerin, silicone, halocarbon, syltherm filling fluid
In a rush? Ashcroft Gold Service guarantees shipment within 3 to 5 days. Call us now at 1-800-884-4967 for additional information.

This product is an accessory for the following products:


The Ashcroft Type 330 mini diaphragm seal has an all welded metal construction and prevents process media leakage. It's flush design eliminates pockets that could cause clogging or build-up of process media. The diaphragm area is easy to clean, and the unit is provided with a 1 inch MNPT process connection. The compact size allows it fit into space restricted areas. The Type 330 is for use on pressure gauges up to 3.5 inches from 60 to 3000 psi.