Diaphragm Seals and Isolators
Find the optimal Ashcroft® diaphragm seals and isolation rings for your application by using the filtering options provided.
Ashcroft® diaphragm seals and isolation rings protect valuable instruments from potential damage caused by corrosive media or clogging from sludge or slurries, especially in wastewater processing. Diaphragm seals are offered in a variety of configurations with a wide selection of compatible wetted materials, such as 316 stainless steel, Monel and Tantalum. Isolation rings are available in different diameters for integration into piping systems. They provide a contiguous, flexible inner wall that deflects to equally pressurize the fill fluid into the pressure measuring device.
Showing 1-12 of 30 products
200-201 Threaded Diaphragm Seals
The Ashcroft® 200 and 201 threaded diaphragm seals protect pressure measuring instruments. Used when process compatibility is required, these are also applied when media exhibit...
202-203 Flanged Diaphragm Seals
The Ashcroft® 202 and 203 diaphragm seals protect pressure measuring instruments. Used when process compatibility is required, they are also applied when media can potential...
80 Wafer Isolation Ring
The Ashcroft® 80 isolation ring is mounted inline with process piping. Used for process protection of measuring instruments, the ring-design eliminates process accumulation, assuring accurate...
100-101 Threaded Diaphragm Seals
The Ashcroft® 100 and 101 threaded diaphragm seals protect pressure measuring instruments. Used when process compatibility is required, these are also applied when media exhibit...
102-103 Flanged Diaphragm Seals
The Ashcroft® 102 and 103 flanged diaphragm seals protect pressure measuring instruments. Used when process compatibility is required, they are also applied when media exhibit...
81 Bolt Thru Isolation Ring
The Ashcroft® 81 isolation ring is mounted inline with process piping. Used for process protection of measuring instruments, the ring-design eliminates process accumulation, assuring reliable...
510-511 All-Welded Diaphragm Seals
The Ashcroft® 510 and 511 compact, all-welded diaphragm seals protect pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media...
310-315 Mini-Diaphragm Seals
The Ashcroft® 310 and 315 mini-diaphragm seals protect pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibit pulsation...
82 Threaded Isolation Ring
The Ashcroft® 82 isolation ring is threaded in-line with process piping. It is designed for threaded piping systems to protect pressure measuring instruments. The ring-design...
DF Flush Flanged Diaphragm Seal
The Ashcroft® DF flush flanged diaphragm seal uses a diaphragm welded directly to the assembly flange. This eliminates much of the cost associated with bulky...
740-741 High-Displacement Diaphragm Seals
The Ashcroft® 740 and 741 high-displacement diaphragm seals are used with low-ranged instruments or high static pressure differential pressure gauges with low differential pressure. Used...
330 All-Welded Flush Mini Diaphragm Seal
The Ashcroft® 330 all-welded flush mini-diaphragm seal protects pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibit pulsation...Related Resources
Why Field Filling Your Isolators is not Recommended (resource)
Considerations for using a diaphragm seal in low-pressure applications (resource)
When NOT to Use An Isolation Ring (resource)
Reasons to Use a Diaphragm Seal or Isolation Ring (resource)
What to consider when choosing material for your diaphragm seal (resource)
When would I use a dampening device with a diaphragm seal? (resource)
What is a Diaphragm Seal? (resource)
What factors affect diaphragm seal performance? (resource)
How do I safely select diaphragm seals for high temperature applications? (resource)
When to Use a Diaphragm Seal vs. an Isolation Ring (resource)
Fill Fluid Options for Pressure Instruments (resource)
Heat Dissipation: Pressure Gauge Accessories for Non-Steam Applications (resource)
CRN - 80 & 81 Isolation Rings - Prince Edward Island (resource)
CRN - 80 & 81 Isolation Rings - Saskatchewan (resource)
CRN - 80 & 81 Isolation Rings - Ontario (resource)
CRN - 80 & 81 Isolation Rings - Nunavut (resource)
CRN - 80 & 81 Isolation Rings - Nova Scotia (resource)
CRN - 80 & 81 Isolation Rings - Yukon (resource)
CRN - 80 & 81 Isolation Rings - Northwest Territories (resource)
CRN - 80 & 81 Isolation Rings - New Foundland (resource)
CRN - 80 & 81 Isolation Rings - New Brunswick (resource)
CRN - 80 & 81 Isolation Rings - Manitoba (resource)
CRN - 80 & 81 Isolation Rings - Alberta (resource)
CRN - 80 & 81 Isolation Rings - Quebec (resource)