Data Sheet

The Ashcroft® type 102 and 103 flanged diaphragm seals or isolation devices protect pressure measuring instruments. Used when process compatibility is required, these are also applied when media exhibits high temperature or the potential to clog an instrument connection. Ideal for satisfying many challenging applications.

Key Features:

• Wide selection of diaphragm and lower housing materials
  
• Diaphragm threaded to top housing
  
• Flush port (type 103) provides easy cleaning / flushing due to process media prone to clogging

Specifications:

• Style:
  Type 102: flanged
  Type 103: flanged with flushing port
  
• Process size: 1/2" to 3"
  
• Flange rating: 150, 300, 600, 900 & 1,500 class

(BACK TO TOP)

Data Sheet

DF Flush Flanged Diaphragm Seal

The Ashcroft® DF flush flanged diaphragm seal uses a diaphragm welded directly to the assembly flange, eliminating much of the cost associated with bulky lower housings made from exotic and expensive wetted materials. The flush-mounted diaphragm prevents clogging and is available in a full range of metallic and coated materials. 

Key Features:

• Flush design minimizes the use of expensive specialty wetted materials
• Flush-mounted diaphragm prevents clogging of process media

Specifications:

• Style: DF (flush)
• Process size: 1" to 4" flanged
• Flange Rating: 150RF to 2500RF

(BACK TO TOP)

106 In-Line Flanged Diaphragm Seals

The Ashcroft® 106 in-line flanged diaphragm seal or isolation device protects pressure measuring instruments. Mounted in-line to the process piping, it is used on applications where continuous flow prevents process clogging or accumulation, while preventing process fluid loss in the event the measuring instrument is removed or fails. An ideal choice for satisfying challenging installation requirements.

Key Features:

• Wide selection of diaphragm and lower housing materials
  
• Diaphragm threaded to top housing

Specifications:

• Process size: 1/2" to 8" 
  
• Flange rating: 150 class

(BACK TO TOP)

202-203 Flanged Diaphragm Seals

The Ashcroft® 202 and 203 diaphragm seals or isolation devices protect pressure measuring instruments. Used when process compatibility is required, these are also applied when media exhibits high temperature or the potential to clog an instrument connection. Ideal for satisfying many challenging applications.

Key Features:

• Wide selection of diaphragm and lower housing materials
  
• Diaphragm welded (metallic) or bonded (elastomer) to top housing
  
• Flush port (type 203) provides easy cleaning / flushing due to process media prone to clogging

Specifications:

• Style:
  Type 202: flanged
  Type 203: flanged with flushing port 
  
• Process size: 1/2" to 3"
  
• Flange rating: 150, 300, 600, 900 & 1,500 class

(BACK TO TOP)

206 In-Line Flanged Diaphragm Seals

The Ashcroft® 206 in-line flanged diaphragm seal or isolation device protects pressure measuring instruments. Mounted in-line to the process piping, it is used on applications where continuous flow prevents process clogging or accumulation, while preventing process fluid loss in the event the measuring instrument is removed or fails. An ideal choice for satisfying challenging installation requirements.

Key Features:

• Wide selection of diaphragm and lower housing materials
  
• Diaphragm welded (metallic) or bonded (elastomer) to top housing

Specifications:

• Process size: 1/2" to 8" 
  
• Flange rating: 150 class

(BACK TO TOP)

302-303 Flanged Diaphragm Seals

The Ashcroft® 302 and 303 diaphragm seals or isolation devices protect pressure measuring instruments. Used when process compatibility is required, these are also applied when media exhibits high temperature or the potential to clog an instrument connection. Ideal for satisfying many challenging applications.

Key Features:

• Wide selection of diaphragm and lower housing materials
  
• Diaphragm (elastomer) clamped between top and bottom housings
  
• Flush port (type 303) provides easy cleaning / flushing due to process media prone to clogging

Specifications:

• Style:
  Type 302: flanged
  Type 303: flanged with flushing port 
  
• Process size: 1/2" to 3"
  
• Flange rating: 150, 300, 600, 900 & 1,500 class

(BACK TO TOP)

402-403 Flanged All-Weld Diaphragm Seals

The Ashcroft® 402 and 403 flanged all-weld diaphragm seals or isolation devices protect pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibits high temperature, pulsation or the potential to clog an instrument connection. An ideal selection for applications needing added product integrity.

Key Features:

• Wide selection of diaphragm and lower housing materials
  
• All welded construction
  
• Flushing port (type 103) provides easy cleaning / flushing due to process media prone to clogging

Specifications:

• Style:
  Type 402: flange
  Type 403: flange with flushing port 
  
• Process size: 1/2" to 3"
  
• Flange rating: 150 to 1500 class

(BACK TO TOP)

702-703 Flanged High Displacement Diaphragm Seals

The Ashcroft® 702 and 703 high-displacement diaphragm seals or isolation devices are used with low pressure or differential pressure gauges with low differential pressure and elevated static pressure. Used to ensure material compatibility, they are also applied when process media exhibits high temperature, pulsation or the potential to clog an instrument connection. An ideal product for satisfying low pressure measurement needs.

Key Features:

• Wide selection of diaphragm and lower housing materials
  
• Enlarged welded diaphragm; high displacement allows high sensitivity to pressure fluctuations 
  
• Flushing port (type 703) provides easy cleaning / flushing due to process media prone to clogging

Specifications:

• Style:
  Type 702: raised face flange
  Type 703: raised face flange with flushing port
  
• Process size: 1/2" to 3"
  
• Flange rating: 150 and 300 class

(BACK TO TOP)