Product details
Weiss Thermowell | B3575BS | Brass | 3-1/2″ Stem
Product Description
The B3575BS is specifically engineered to accommodate industrial thermometers with a 3-1/2″ stem. In the high-demand cooling environments of Dubai and Abu Dhabi, this thermowell serves as a critical interface between the sensing instrument and the process fluid. Its brass construction is ideal for water-based systems, offering a perfect balance of durability and high thermal conductivity.
By utilizing the B3575BS, systems can remain fully operational during thermometer maintenance. The well acts as a permanent seal, allowing for the removal, calibration, or replacement of the thermometer without the need to drain the pipes or risk a system blowout, making it essential for 24/7 facility management.
Key Features
- Rapid Thermal Conductivity: Brass ensures the sensing element receives immediate and accurate temperature changes from the process media.
- Compact 3-1/2″ Design: Perfect for smaller diameter piping or manifolds where a shorter insertion depth is required.
- Pressure-Tight Maintenance: Allows for instrument service without system downtime or fluid loss.
- Standard Industrial Threads: Features a 3/4″ NPT process connection and the standard 1-1/4″ – 18 internal thread for universal thermometer compatibility.
- Corrosion Resistance: Highly effective in non-corrosive fluid environments such as chilled water loops and domestic hot water systems.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | B3575BS |
| Material | Brass |
| Stem Length | 3-1/2″ |
| Insertion Length (U-Dimension) | 2-1/2″ |
| Process Connection | 3/4″ NPT |
| Internal Thread | 1-1/4″ – 18 UNEF |
| Application | HVAC, Chilled Water, Hot Water, Plumbing |
Frequently Asked Questions
- Q: What is the difference between B3575BS and E3575BS?
- A: Both share the same dimensions and material; however, different series codes may refer to specific packaging or slight variations in the shank design (tapered vs. straight). They are generally interchangeable for standard HVAC use.
- Q: Is this suitable for 4-inch pipes?
- A: Yes, a 3-1/2″ stem well is commonly used in 4-inch and larger pipes to ensure the sensing tip reaches the flow stream without hitting the opposite pipe wall.
- Q: Can it be used in high-velocity steam?
- A: For high-velocity or high-pressure steam, a Stainless Steel (304SS or 316SS) thermowell is recommended for its higher mechanical strength.