Ashcroft 81 Bolt Thru Isolation Ring
Starting at $634.60

Not in stock. Usually ships in 3-4 weeks [?]

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  • 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
Miniature, explosion proof, stainless steel construction, pressure ranges up to 7500 psi, field adjustable or factory set
Ashcroft A Series Pressure Switches
Compact, 316 stainless steel, up to 7500 psi
Ashcroft B Series Pressure Switch
Watertight NEMA 4 or explosion proof NEMA 7 enclosure with optional welded design
In Stock
Ashcroft B Series Temperature Switch
Watertight NEMA 4 or explosion proof NEMA 7 enclosure and optional welded design
Ashcroft DDS Pressure Switch
Rugged pressure switch designed to sense low differential pressures between high pressure sources
Ashcroft F Series Pressure Switches
Compact pressure switch with explosion-proof body & hermetically sealed watertight anodized aluminum body
Ashcroft G Series Pressure Switch
316 SS construction, watertight NEMA 4X, IP65 enclosure
Ashcroft G Series Temperature Switch
Ideally suited for harsh & corrosive environments with 316 SS construction & watertight NEMA 4X IP65 enclosure
Ashcroft H Series Hydraulic Pressure Switches
Designed for hydraulic control systems, watertight NEMA 4X IP66 enclosure
Ashcroft L Series Pressure Switch
Easy to use & readily retrofits to virtually all process
In Stock
Ashcroft L Series Temperature Switch
Retrofits to virtually all process, for industrial & OEM applications with a watertight NEMA 4X IP66 enclosure
Ashcroft N Series Pressure Switches
Reliable & long lasting for high pressure applications with 1.0% accuracy
Ashcroft P Series Pressure Switches
For tough applications, designed for user reliability & safety
Ashcroft P Series Temperature Switch
Explosion-proof NEMA 7/9 IP55 enclosures with dual-chamber design for improved safety

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