Product details
Weiss Test Plug | BP25NR (Code: 90101) | 1/4″ NPT | Nordel (EPDM) Core
Product Description
The BP25NR allows technicians to obtain instant pressure or temperature readings by simply inserting a gauge probe or pocket thermometer through the self-sealing valve. The “BP” identifies the Brass Plug body, and the “25” denotes the 1/4″ NPT process connection.
While the “NR” suffix historically referred to Neoprene, the specific Product Code 90101 identifies the Nordel (EPDM) version. In the UAE’s mechanical sector, Nordel is the preferred choice for both chilled water and hot water systems because it handles a wider temperature range (up to 275°F) and is highly resistant to standard water treatment chemicals. The compact 1/4″ size makes it ideal for installation in tight spaces, branch lines, and HVAC equipment tapings in Dubai and Abu Dhabi projects.
Key Features
- Nordel (EPDM) Self-Sealing Core: Specifically engineered for superior performance in hot water heating and chilled water systems. It provides a reliable seal after thousands of probe insertions.
- Corrosion-Resistant Brass Body: Built to withstand the high humidity and saline conditions typical of the Middle East.
- 1/4″ NPT Standard Connection: The most common size for equipment ports and branch line tapping, allowing for a compact and secure installation.
- Dual Monitoring Capability: Allows for the measurement of both pressure and temperature at the same point without shutting down the system.
- Secondary Safety Cap: Includes a threaded brass cap with a retainer strap to protect the core from debris and provide a secondary leak-proof barrier.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | BP25NR (Code: 90101) |
| Connection Size | 1/4″ NPT |
| Core Material | Nordel (EPDM) |
| Body Material | Brass |
| Temperature Range | -34°C to +135°C (-30°F to +275°F) |
| Maximum Pressure | 1,000 PSI (69 BAR) |
| Application | Chilled Water, Hot Water, Low-Pressure Steam |
Frequently Asked Questions
- Q: Why is the Nordel (90101) version preferred over Neoprene?
- A: Nordel (EPDM) has a higher heat threshold (up to 135°C) and better resistance to aging and chemicals compared to Neoprene, making it the “universal” choice for modern building services in the UAE.
- Q: Does this plug require any tools for operation?
- A: No tools are required for the plug itself. You simply unscrew the brass cap by hand and insert a test probe.
- Q: Can I use this for gas lines?
- A: While EPDM is excellent for water, for natural gas or petroleum-based systems, a Neoprene or Viton core is generally specified.






