Starting at $229.25

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Features

  • All-welded metal construction
  • No gaskets or bolts
  • 2.5 & 3.5in gauges from 15 to 1000 psi
  • 4.5in gauges from 30 to 1000 psi
  • Top housing material 316L stainless steel standard
  • Diaphragm materials:
    • 316L stainless steel
    • Hastelloy C
    • Tantalum
  • 1/4 NPT or 1/2 NPT instrument connections

This product is an accessory for the following products:

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Analog differential pressure gauges constructed with a stainless steel case with a choice of aluminum, brass, or stainless steel body
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Ashcroft 1180 Series Analog Low Pressure Gauge
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Analog pressure gauge with diaphragm sensing element for pressures below 15 psi
$48.18
Ashcroft 2030 Series Digital Sanitary Gauge
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$832.99
Ashcroft 2074, 2174, and 2274 Digital Industrial Gauges
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Ashcroft 2089, 2086 and 2084 Precision Digital Test Gauges
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1450 psi static pressure standard with optional static pressure to 3625 psi
$3,144.92
Ashcroft 5509 Differential Pressure Gauge
±2.5% full scale accuracy with 316 stainless steel wetted parts
$1,936.75
Ashcroft A4A Precision Dial Pressure Gauge
Ranges from 15 to 100,000 psi and ±0.1% full-scale accuracy
$1,764.40
Ashcroft DG25 Digital Pressure Gauge
0.5% accuracy, bar graph display, vacuum & compound ranges from -14.7 to 25,000 psi
$296.88
Ashcroft Type 1032 Sanitary Pressure Gauge
Sanitary pressure gauges that can be autoclaved or sterilized in place to temperatures of 300°F
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Ashcroft Type 1084 Pocket Test Gauge
Stainless steel 3in pocket test gauge with ±0.5% accuracy
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Ashcroft D1005PS Digital Gauge
General purpose digital gauge ±0.5% full scale accuracy
RETIRED

The Ashcroft Type 311 / 312 diaphragm seal is compact in size to fit into space restricted areas. It is designed to protect transducers, mini-switches, and pressure gauges with 3.5 inch or smaller dial sizes from corrosion, plugging or freeze-up. The all-welded metal construction prevents process media leakage. It is rated for 2500 psi at 100°F and has a 316L stainless steel top housing standard. Lower housing materials include 316L stainless steel or Hastelloy C. Diaphragm materials include 316L stainless, Hastelloy C, or Tantalum. 1/4, 1/2, 3/4 or 1 NPT process connection sizes are available and the instrument connection is 1/4 or 1/2 NPT.