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The Ashcroft® 400 all-welded diaphragm seals protect pressure measuring instruments. Used to ensure process compatibility, they are also applied when process media exhibit high temperature, pulsation or the potential to clog an instrument connection. An ideal selection for applications requiring minimal potential leak paths.
Unit of Measure

Specifications

Brands

 N/A Ashcroft®

Process Connection Size (National Pipe Thread (NPT) Male)

 N/A 1/4 to 1 in

Process Connection Size (National Pipe Thread (NPT) Female)

 N/A 1/4 to 1-1/2 in

Instrument Connection Size

 N/A 1/2 in1/4 in

Instrument Connection Type

 N/A National Pipe Thread (NPT) Female

Pressure Rating

 N/A Up to 4,400 psi

Pressure Rating (Optional)

 N/A 9,000 psi

Typical Added Tolerance (±)

 N/A 0.5 %

Connection Style

 N/A Threaded

Key Features

Key Features

 N/A
  • Select diaphragm and lower housing materials
  • All-welded construction
  • Carbon steel rings (standard); 300 stainless steel rings (optional)
  • Pressure rated up to 4,400 psi; optional high-pressure rings to 9,000 psi (type 401: 5,000 psi )
  • Flush port (type 401) provides easy cleaning/flushing for process media prone to clogging

Applications

Applications

 N/A Process Market:
Oil and Gas
Refineries
Chemical and Petrochemical
Water and Wastewater

Process Applications:
Oil and Gas Fracking
NACE Compliant Processes (Sour Gas Separation)
Biogas and Biodiesel