Product details
Weiss Industrial Thermowell | B35-50BS | 5″ Length | Brass
Product Description
The B35-50BS is a precision-machined protective housing that allows industrial thermometers to be installed and serviced without interrupting the system flow. The “B35” designation identifies this as a 3/4″ NPT process connection with a Straight Shank profile. The straight shank design is preferred for its structural rigidity, providing excellent resistance to the mechanical stress caused by high-velocity fluid flow.
The “50” indicates an overall length of 5 inches (125 mm), and the “BS” confirms the material is Brass. In Dubai and Abu Dhabi mechanical rooms, this 5-inch length is specifically designed to house 3.5-inch (90 mm) stem thermometers. It provides a 1.5-inch lagging extension, ensuring the thermometer dial remains accessible and visible above standard pipe insulation while the sensing bulb is fully immersed in the fluid stream.
Key Features
- High Thermal Conductivity: Brass construction ensures efficient heat transfer from the fluid to the thermometer sensor for accurate, real-time monitoring.
- Rugged Straight Shank: Offers superior strength and durability in high-flow piping systems compared to reduced-tip models.
- 5″ Total Length: Engineered for 3.5-inch stem thermometers, providing the ideal immersion depth for 4″ to 8″ diameter pipes.
- Standard 3/4″ NPT Connection: The industrial standard mounting size, ensuring seamless installation into standard pipe tees and fittings.
- System Serviceability: Allows for thermometer maintenance or replacement without draining the system or risking leaks.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | B35-50BS |
| Overall Length | 5″ (125 mm) |
| Insertion Length (U) | 3.5″ (90 mm) |
| Material | Brass |
| Stem Design | Straight Shank |
| Process Connection | 3/4″ NPT |
| Internal Thread | 1-1/4″ – 18 UNEF (Industrial Standard) |
| Application | HVAC / Chilled Water / Hot Water |
Frequently Asked Questions
- Q: Which thermometer fits this thermowell?
- A: This well is designed for any industrial glass or bimetal thermometer with a 5-inch stem, such as the Weiss A9VU3.5 or 9VBM3.5 series.
- Q: Is Brass suitable for all HVAC applications?
- A: Brass is excellent for non-corrosive water systems. If the fluid is aggressive or if the installation is in a highly saline coastal area, a stainless steel model (e.g., B35-50SS) might be required.
- Q: Can this be used for potable water?
- A: This is standard brass. For drinking water projects in the UAE, you may be required to specify the Lead-Free (LF) version to comply with health codes.