Product details
Weiss Bimetal Thermowell | B25-75BS | 2.5″ Length | Brass
Product Description
The B25-75BS is the standard socket for 2.5-inch (65 mm) stem bimetal thermometers. The “B25” designation identifies this as a Straight Shank thermowell with a 2.5″ nominal length. Because of its short length, it does not require a reduced tip or lagging extension, making it the most durable and compact option for localized temperature monitoring.
In the UAE’s building services sector, this model is frequently used in 2″ to 4″ diameter pipes, pump casings, and small heat exchangers. Its primary function is to allow for the installation or removal of a bimetal thermometer without draining the system or risking leaks. The brass construction is ideal for non-corrosive water applications, providing excellent heat conductivity for real-time temperature tracking in Dubai and Abu Dhabi mechanical rooms.
Key Features
- Compact 2.5″ Length: Perfectly suited for small-bore piping or equipment where immersion depth is limited.
- Straight Shank Design: Provides maximum structural strength and resistance to fluid-induced vibration and mechanical stress.
- Premium Brass Construction: Offers superior thermal conductivity and reliable corrosion resistance in chilled water, domestic water, and air systems.
- Separable Socket Design: Enables easy instrument maintenance, calibration, or replacement while the process line remains under full pressure.
- 1/2″ NPT Instrument Thread: Precision-machined to accept standard bimetal thermometers with a 1/2″ NPT fixed-thread connection.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | B25-75BS |
| Nominal Stem Length | 2.5″ (65 mm) |
| Insertion Length (U) | 1.625″ (41 mm) |
| Material | Brass |
| Stem Design | Straight Shank |
| Process Connection | 3/4″ NPT |
| Instrument Connection | 1/2″ NPT (Standard for Bimetal) |
| Application | Small Diameter Piping / Pump Casings / HVAC |
Frequently Asked Questions
- Q: Which thermometer fits the B25-75BS?
- A: It is designed for 3″ or 5″ dial bimetal thermometers with a 5-inch stem, such as the Weiss 3BBM2.5 or 5BBM2.5 series.
- Q: Can this be used for insulated pipes?
- A: Because this model has no lagging extension (the neck is short), it is best used on uninsulated pipes. If you have thick insulation, you would need the BN series with an extended neck.
- Q: Is this suitable for potable water?
- A: Brass is common in the UAE, but for drinking water systems, check if your project requires the Lead-Free (LF) version (B25-75BSLF).
