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The Ashcroft® 303 diaphragm seals protect pressure measuring instruments. Used when process compatibility is required, they are also applied when media exhibit high temperature or the potential to clog an instrument connection. Ideal for satisfying many challenging applications.
Unit of Measure

Specifications

Brands

 N/A Ashcroft®

Typical Added Tolerance (±)

 N/A 0.5 %

Connection Style

 N/A Flanged with Flushing Port

Process Connection Size

Process Connection Size

 N/A 1 in1/2 in1-1/2 in2 in3 in3/4 in

Process Connection Type

 N/A National Pipe Straight (NPS)

Instrument Connection Size

Instrument Connection Size

 N/A 1/2 in1/4 in

Instrument Connection Type

 N/A National Pipe Thread (NPT) Female

Flange

Flange Class

 N/A 150 300 600 900 1,500

Flange Ratings (Maximum Allowable Working Pressure (MAWP))

 N/A Per American Society of Mechanical Engineers (ASME) B16.5

Key Features

Key Features

 N/A
  • 316L stainless steel top housing (standard)
  • Wide selection of diaphragm and lower housing materials
  • Diaphragm (elastomer) clamped between top and bottom housings
  • Flush port provides easy cleaning/flushing due to 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
Biogas and Biodiesel