THERMOWells
Thermocouples & Thermometers
What we offer.
•Flanged
•Van Stone Type
•Standard Threaded or Weld-In
•Ceramic Protecting Tubes
•Silicon Protecting Tubes
•Injection Quills
•Burner Tips
We can produce thermowells of all shapes and size. Please have all of your custom dimensions ready when placing your order.
Straight, Tapered, and Stepped
Standard Threaded Thermowells
(Straight, Tapered, and Step-Down Shank)
Flanged Thermowell
(Straight, Tapered, and Step-Down Shank)
Flanged Tapered Thermowell
Thread Size: 3/4" or 1" NPT
Bore Size: .260" or .385"
Hex Size: 1 1/8" or 1 3/8"
Insert Length: 2 1/2" through 22 1/2" (ask about custom lengths)
Material: T304 and T316 stainless steel, monel and all alloys
Flange Size: 1" and up
Flange Rating: 150# through 2500#
Flange Facing: Raised face and ring-type joint
Bore Size: .260" or .385"
Insert Length: 2" and up
Material: T304 and T316 stainless steel, monel and all alloys
Injection Quill
Van Stone Thermowell
(Straight, Tapered, Step-Down Shank)
Van Stone Thermowell (left)
Van Stone Injection Quill (right)
Facing: Raised face
Bore Size: .260" or .385"
Insert Length: 2" and up
Material: T304 and T316 stainless steel, monel and all alloys
Please have the following information ready
1. Material
2. Overall length
3. "U" length
4. Bore diameter
5. Straight, tapered or stepped stem
6. Process connection and instrument connection sizes.
7. Tip diameter & stem diameter
Need to order a
custom thermowell?
Injection Quill designs can be very specific and very different from one another. We are capable of fabricating many different types and variations to suit your needs.
We also have
Sandelius Instrumentation Products
• Thermocouples
• RTD
• Multi-Point Thermocouples
• Assemblies
• Ceramic Thermocouples
• Tubeskin Thermocouples
• Radial-Weld Pad Covers
• Transmitters
Thermometers
Tel-Tru Bimetal Thermometers
3", 4" and 5" diameter head
Stem lengths 2 1/2 to 24"
Dozens of temperature ranges available
​
Model Codes
AA-375R 3", AA-475R 4", AND AA-575R 5" diameter head
with calibration feature
Specifications
Stem Lengths: 2 1/2", 4", 6", 9", 12", 15", 18" and 24" (available up to 120")
Stem Diameter: .250" standard up to 42" stem. .375" standard over 42" stem.
Connection: 1/2" NPT.
External Reset: Easy to calibrate by inserting 1/16" Allen wrench into reset opening.
Construction: 304 stainless steel external parts. Welded construction.
Corrosion resistant to most chemicals.
Hermetic seal: Per ASME B40.3 dustproof and leakproof.
​
Harness: All stainless steel brackets with screws that loosen to allow 360°
rotation of head and 180° adjustment of stem position.
​
Bellows: Heavy-duty flexible stainless steel. Hermetically sealed at case and
connection. Protects mechanism that transfers temperature change
from bimetal coil to pointer.
Dial: True Anti-Parallax dial, easy-to-read from any angle, minimizes
reading errors. Anodized aluminum with large black numbers and graduations.
Lens: Glass.
Bimetal Coil: Helix coil is silicone coated on ranges below 500°F for vibration
dampening and to maximize heat transfer and response time.
Accuracy: +/-1% full span per ASME B40.3 Grade A. Adjustment of the angle
between case and stem may affect accuracy up to 0.5% of span
(ASME B40.3).
Over Temperature Up to 250°F 100%; 250°F to 550°F, 50%; 550°F to 1000°F,
Limits: continuous use up to 800°F, intermittent use over 800°F.
Fahrenheit
-110/100°
-50/120°
-40/160°
0/140°
0/180°
0/200°
0/220°
0/250°
0/300°
0/500°
20/240°
25/125°
50/250°
50/300°
50/400°
50/500°
50/550°
100/800°
150/750°
*200/1000°
°/Div.
2°
2°
2°
1°
2°
2°
2°
2°
5°
10°
2°
1°
2°
2°
5°
5°
5°
10°
10°
10°
Celsius
-75/175°
-70/70°
-50/100°
-50/25°
-50/50°
-40°/70°
-20°/120°
-10/110°
0/50°
0/60°
0/80°
0/100°
0/150°
0/200°
0/250°
0/300°
0/400°
0/450°
100/400°
*100/550
°/Div.
5°
1°
1°
1°
1°
1°
1°
1°
1/2°
1°
1/2°
1°
1°
2°
2°
5°
5°
5°
5°
5°
Standard Ranges
Fahrenheit
-110/100°
-50/120°
-40/160°
0/140°
0/180°
0/200°
0/220°
0/250°
0/300°
0/500°
20/240°
25/125°
50/250°
50/300°
50/400°
50/500°
50/550°
100/800°
150/750°
*200/1000°
Celsius
-75/175°
-70/70°
-50/100°
-50/25°
-50/50°
-40°/70°
-20°/120°
-10/110°
0/50°
0/60°
0/80°
0/100°
0/150°
0/200°
0/250°
0/300°
0/400°
0/450°
100/400°
*100/550
Dual Ranges
* Thermometers with temperature ranges 200/1000°F and 100/550°C are NOT recommended for continuous use above 800°F/425°C (for intermittent use only).
Options
•Union connection or other connection types and sizes.
•Silicone filled.
•Other lenses are acrylic, polycarbonate, shatterproof glass
or tempered glass.
•Other stem diameters .236" (6mm), .315" (8mm), .375" (9.52mm).
•316SS wetted parts.
•Other configuration combinations available upon request.
