740-741 High-Displacement Diaphragm Seals

The Ashcroft^® 740 and 741 high-displacement diaphragm seals or isolation devices are used with low-ranged instruments or high static pressure dp gauges with low differential 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
  
• Flush port (type 741) provides easy cleaning / flushing due to process
  media prone to clogging

Specifications:

• Style:
  Type 740: threaded
  Type 741: threaded with flushing port
  
• Low pressure range capability;
  Bellows gauges: 75 mbar and above
  Differential pressure gauges F5503: 0,6 bar and above
  
• Process size: 1/4" to 1" NPT female
  
• Rated up to 50 bar