Metaval’s Standard Thermowell line protects temperature sensors from process pressure, corrosion, mechanical damage, and flow‑induced vibration. Designed in accordance with ASTM / ASME PTC 19.3 methodology, each thermowell balances strength with response time and is available in a wide range of alloys and construction styles.
X‑ray, ultrasonic, dye‑penetrant, hydrotest, PMI.
up to 2 500 PSI / 550 °C (material‑dependent).
isolates RTDs / thermocouples from direct process media.
½″–2″ NPT / BSP / Flange ANSI 150‑2500 / Weld‑in
50 mm – 1 500 mm (customizable)
Up to 2 500 PSI (175 bar)
6.3 mm (others on request up to 12 mm)
½″ or ¾″ NPT (standard)
Tapered, Straight, Stepped
–50 °C to +550 °C (alloy‑dependent)
ASME PTC 19.3 TW methodology
Dimension Check
Hydro Test
Dye Penetration Test
Positive Material Identification (PMI) Test
Helium Leakage Test
Radiography Test
NACE MR 0175 / 0103 / ISO 15156
Corrosion Tests
FN Test
MPT
Impact Test
UT test
Ultrasonic Cleaning
Oxygen Cleaning
Chemical & Physical Properties
Hardness Test
Micro Test
Microstructure Analysis
Extended sensor life – isolates RTDs / thermocouples from direct process media.
Pressure & temperature proven – up to 2 500 PSI / 550 °C (material‑dependent).
Material flexibility – SS304/316/L, Carbon Steel, Duplex, Inconel® 600/625, Incoloy® 800, Monel®, Hastelloy® C‑276, Titanium.
Wake‑frequency calculations per ASME PTC 19.3 available on request.
Factory NDT options: X‑ray, ultrasonic, dye‑penetrant, hydrotest, PMI.
IBR & NACE compliance, PWHT, and special coatings are offered.
Thermopaste / heat‑transfer compound
Dielectric unions
Sensor spring clips
Weld boss adaptors
Velocity collars
Insulation jackets
Power‑plant steam & feedwater lines
Chemical & petrochemical reactor jackets
Oil & gas separator and transmission systems
HVAC chillers and utility skids
Water & wastewater treatment processes
Bar Stock Threaded (BT) – Process threads: NPT, BSP, Metric
Bar Stock Flanged (BF) – Flanges: ANSI / BS / DIN
Bar Stock Weld‑in (BW) – Butt‑weld or socket‑weld stem
Fabricated Threaded (FT) – Tube‑and‑tip with threaded hex plug
Fabricated Flanged (FF) – Tube shank welded to forged flange
Fabricated Weld‑in (FW) – Tube shank with weld‑in end
ISO 9001:2015 | ISO 14001:2015 | ISO 45001:2018
Pressure Equipment Directive (PED 2014/68/EU)
ASME B31.3 for Pressure Piping
ILAC-MRA / NABL Certified Calibration Lab (ISO 17025)
In-house ASNT NDT Level III Inspection Capability
Get in touch with our team for additional information on product pricing, technical data, project support and more.
