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Reduced-Tip Van Stone Thermowells are available in a variety of materials, flange sizes, and pressure ratings. They are also offered in various lengths and with optional lagging extensions. Thermowell specifications should be determined based on process conditions which include strength, temperature, pressure and corrosion-resistance requirements. The Reduced Tip Van Stone thermowell is supplied with a 0.260" bore diameter to accommodate sensing elements with a 0.252" maximum diameter. The stepped construction is normally used in standard-duty applications and increases the speed of response while maintaining mechanical strength. Van Stone thermowells are connected using a separate and reusable lapped backing flange, eliminating the need for expensive flange materials. These wells are available as separate components or as part of complete sensor assemblies.
Unit of Measure

Specifications

Brands

N/A Pyromation®

Well Type

N/A Reduced-Tip Van Stone

Bore Diameter

N/A 0.260 in

Flange Size

N/A 1-1/2 in

Nominal Diameter (DN)

N/A 40 in

Flange Type

N/A Van Stone (Lap Joint)
Pressure Rating1 N/A 900 Class

Note for "S" Length

N/A Specify length in inches using two digits plus fractional length

Note for Material

N/A Specify two digit material code as stated in the Thermowell Material Table located earlier in section
Optional "T" Lag Dimension2 N/A Specify "T" dimension in inches

Pipe Size (P)

N/A 1-1/2 in

Diameter of Pipe Size "P"

N/A 1.900 in

Diameter "R"

N/A 2-7/8 in

Diameter "Q"

N/A 7/8 in

Options

Options

N/A 316 Stainless steel well cap and chain

Note

Note

N/A ("U" length for non-lagging wells) = "S" - 2"
("U" length for lagging wells) = "S" - 2" -"T"
(To solve for "T"), "T" = "S" -"U" - 2" (When "U" and "S" are specified)
  • 1 Carbon steel backing flange standard
  • 2 Leave blank if no lag is required