Van Stone Thermowells

The Ashcroft® Van Stone thermowell is used when pressure, high velocity and corrosive process media exist. Designed to mate between two existing flanges.

Features & Properties

Use & Application

Downloads

Features & Properties

Use & Application

Downloads

The Ashcroft® Van Stone thermowell isolates and protects a temperature instrument’s sensing element from pressurized, high velocity and corrosive media. They ensure longer life and accurate measurement while allowing the sensing instrument to be removed without shutting down the process. A wide selection of materials, sizes and dimensions are available.

Key Features

Full penetration welds on flanged thermowell

Stamped with mil traceable materials and heat number

Testing and certifications including Wake Frequency Calculations per ASME PTC 19.3 TW-2016

One-piece bar stock construction

Customizable configurations

Material certificates to EN 10204:2004 3.1

Selection of wetted materials

Markets & Applications

Oil and Gas

Refinery

Energy

Chemical and Petrochemical

Specifications
Downloads

Shank Style

Tapered

Bore Size

6.6 mm (0.260"), 9.8 mm (0.385"), 6 mm, 8 mm

Options

Cap and Chain

Lagging

Process Connection Style

Lap joint flange

Instrument Connection Style

Threaded

Wetted Parts Material

Stainless steel 304 (1.4301)

Steel

Stainless steel 316Ti (1.4571)

Stainless steel 316L (1.4404)

Monel

Hastelloy C

Duplex

Inconel

Stainless steel 321 (1.4541)

Hastelloy B

Titanium

Carpenter 20 (2.4660)

Process Connection Size

1", 1 1/2"

Data Sheets

📄 Data sheet van stone thermowell EN 02-2025 🇬🇧

Selection Guides

Product + Technical Information