Product details
Weiss Industrial Thermowell | ESS35-75SS | 7.5″ Length | 316 Stainless Steel
Product Description
The ESS35-75SS is a heavy-duty protective sleeve that allows for the safe installation and removal of temperature sensors without interrupting the system flow. The “ESS” prefix designates a Stepped Stem design in 316 Stainless Steel, which provides a superior thermal response by reducing the mass at the sensing tip. The “35” refers to the 3/4″ NPT process connection, and the “75” indicates an overall length of 7.5 inches (190 mm).
In the UAE’s harsh climate and demanding infrastructure projects, 316 Stainless Steel is the gold standard for resisting pitting and corrosion in treated water systems and coastal environments. This 7.5-inch model is the ideal match for 6-inch (150 mm) stem thermometers, providing the correct immersion depth to bypass standard pipe insulation and reach the center of the fluid flow for maximum accuracy.
Key Features
- Superior 316 Stainless Steel: Offers enhanced durability and chemical resistance compared to 304 SS, making it suitable for aggressive fluids and the saline air of Dubai and Abu Dhabi.
- Stepped Stem for Rapid Response: The reduced diameter at the sensing end allows for faster heat transfer, ensuring the thermometer accurately reflects real-time system changes.
- 5″ Total Length: Specifically designed to house a 6-inch stem thermometer, providing a 1.5-inch clearance that typically acts as a lagging extension for pipe insulation.
- Precision Machined Construction: Built to withstand high-pressure environments while maintaining a leak-proof seal with a standard 3/4″ NPT thread.
- System Serviceability: Facilitates thermometer maintenance or replacement while the pipeline remains pressurized and operational.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | ESS35-75SS |
| Overall Length | 7.5″ (190 mm) |
| Insertion Length (U) | 6″ (150 mm) |
| Material | 316 Stainless Steel |
| Stem Design | Stepped Shank |
| Process Connection | 3/4″ NPT |
| Internal Thread | 1-1/4″ – 18 UNEF (Industrial Standard) |
| Application | Corrosive / High-Pressure Fluids |
Frequently Asked Questions
- Q: Is there a difference between ESS3575SS and ESS35-75SS?
- A: Functionally, they are identical. The hyphen is often used interchangeably in cataloging to denote the connection size (35 for 3/4″) and the length (75 for 7.5″).
- Q: Why use a 7.5″ well for a 6″ thermometer?
- A: The extra 1.5 inches usually sits within the pipe fitting or accounts for the insulation thickness (lagging), ensuring the thermometer bulb is fully immersed in the fluid stream within the well.
- Q: Can this be used for salt water?
- A: While 316 SS is highly resistant, for continuous raw seawater exposure, materials like Monel or Titanium are sometimes required. However, for most treated water and HVAC systems in the UAE, 316 SS is the top-tier choice.