Ashcroft 81 Bolt Thru Isolation Ring

Low-maintenance protection for gauges, switches and transducers from contact with process media, for 1 to 10-inch pipe sizes. Learn more...

Starting at $720.70

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Availability
  • Usually ships in 3-4 weeks
Product Manual Product Specs

Features

  • 360-degree sensing flexible inner liner
  • No process deadleg
  • 1 to 10in nominal pipe size
  • 1/4 or 1/2 NPT process connection
  • Non-clogging and low maintenance

This product is an accessory for the following products:

Ashcroft A Series Explosion Proof Pressure Switch
Ashcroft A Series Explosion Proof Pressure Switch

Miniature, explosion proof, stainless steel construction, pressure ranges up to 7500 psi, field adjustable or factory set.

Starting at $328.15
Ashcroft A Series Pressure Switches
Ashcroft A Series Pressure Switches

Compact, 316 stainless steel, up to 7500 psi.

Starting at $178.22
Ashcroft B Series Pressure Switch
Ashcroft B Series Pressure Switch

Watertight NEMA 4 or explosion proof NEMA 7 enclosure with optional welded design.

Starting at $205.89
Ashcroft B Series Temperature Switch
Ashcroft B Series Temperature Switch

Watertight NEMA 4 or explosion proof NEMA 7 enclosure and optional welded design.

Some Models in Stock
Starting at $431.31
Ashcroft DDS Pressure Switch
Ashcroft DDS Pressure Switch

Rugged pressure switch designed to sense low differential pressures between high pressure sources.

Starting at $1,212.68
Ashcroft F Series Pressure Switches
Ashcroft F Series Pressure Switches

Compact pressure switch with explosion-proof body & hermetically sealed watertight anodized aluminum body.

Starting at $410.46
Ashcroft G Series Pressure Switch
Ashcroft G Series Pressure Switch

316 SS construction, watertight NEMA 4X, IP65 enclosure.

Starting at $484.87
Ashcroft G Series Temperature Switch
Ashcroft G Series Temperature Switch

Ideally suited for harsh & corrosive environments with 316 SS construction & watertight NEMA 4X IP65 enclosure.

Starting at $687.99
Ashcroft H Series Hydraulic Pressure Switches
Ashcroft H Series Hydraulic Pressure Switches

Designed for hydraulic control systems, watertight NEMA 4X IP66 enclosure.

Starting at $264.55
Ashcroft L Series Pressure Switch
Ashcroft L Series Pressure Switch

Easy to use & readily retrofits to virtually all process.

Some Models in Stock
Starting at $295.80
Ashcroft L Series Temperature Switch
Ashcroft L Series Temperature Switch

Retrofits to virtually all process, for industrial & OEM applications with a watertight NEMA 4X IP66 enclosure.

Starting at $522.51
Ashcroft N Series Pressure Switches
Ashcroft N Series Pressure Switches

Reliable & long lasting for high pressure applications with 1.0% accuracy.

Starting at $553.80
Ashcroft P Series Pressure Switches
Ashcroft P Series Pressure Switches

For tough applications, designed for user reliability & safety.

Starting at $566.81
Ashcroft P Series Temperature Switch
Ashcroft P Series Temperature Switch

Explosion-proof NEMA 7/9 IP55 enclosures with dual-chamber design for improved safety.

Starting at $794.87

The Ashcroft 81 bolt thru isolation ring is designed to protect measuring devices such as pressure gauges, switches and transducers from direct contact with process media. The isolation ring uses a 360-degree flexible liner that eliminates the potential for clogging or fouling while transmitting pressure hydraulically to the instrument. The ring is mounted between customer-supplied flanges of process piping, and is available in nominal pipe sizes from 1 to 10 inches. Because the "ring" design eliminates process accumulation, it assures reliable and accurate pressure readings.

Ashcroft 81 Bolt Thru Isolation Ring Applications

  • Water and wastewater
  • Mining