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 Use a Saddle Seal in Process Applications? (resource)
What Certifications are Available for Diaphragm Seal Assemblies? (resource)
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)