Model 990.TA

All-welded mini seal

With threaded process connection

Selected documents
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  • Process industry diaphragm seal to combine with Bourdon tube pressure gauges.
  • Intended for corrosive, contaminated, hot or viscous pressure media.

Special Features

  • Small design
  • continouos duty standard
  • All-welded structure, no gaskets


Upper and lower housing welded with integral diaphragm, requires hydraulic fluid to transmit pressure to instrument

Process Connection
¼" or ½" NPT-female, other see options

Instrument Connection
¼" or ½" NPT-female

Suitable Pressure Ranges (MWP 2500PSI @100°F)
2 ½" gauge: 100 PSI to 2500 PSI
4 or 4 ½" gauge: 400 PSI to 2500 PSI

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