Product details
Weiss Pressure Gauge | TL40-P300 | 4″ Dial | 0-300 PSI/BAR
Product Description
The TL40-P300 belongs to the high-visibility Weiss Trade Line (TL) series. The “TL40” designation identifies this as a 4-inch (100 mm) Dial gauge, offering a significant upgrade in legibility over standard 2″ or 2.5″ gauges. This size is specifically chosen for mechanical rooms in Dubai and Abu Dhabi where pressure readings must be clearly visible from several meters away.
This model features a wide pressure range of 0 to 300 PSI (0 to 20 BAR). This range is the industry standard for High-Rise Booster Systems, fire pump discharge monitoring, and high-pressure chilled water systems. The gauge is housed in a rugged black-finished steel case with a clear, impact-resistant window, ensuring durability in demanding plant environments.
Key Features
- Large 4″ High-Visibility Dial: Features a high-contrast white face with bold black graduations, allowing for precise monitoring of high-pressure systems.
- Dual Scale (PSI/BAR): Displays pressure in both imperial (PSI) and metric (BAR) units, complying with international engineering standards and UAE project specifications.
- Precision Bronze Internals: Equipped with a heavy-duty phosphor bronze Bourdon tube and a precision brass movement for consistent accuracy and smooth needle response.
- Durable Construction: The black steel case provides excellent protection against mechanical shock, while the friction-fit window allows for easy cleaning.
- Standard Connection: Features a 1/4″ NPT brass socket, making it compatible with most industrial piping, manifolds, and gauge cocks.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | TL40-P300-4L (Standard Lower Mount) |
| Dial Size | 4″ (100 mm) |
| Range | 0 – 300 PSI / 0 – 20 BAR |
| Mounting Type | Stem Mount (Direct) |
| Connection Location | Lower Mount (Bottom) |
| Connection Size | 1/4″ NPT |
| Case Material | Black Finished Drawn Steel |
| Internal Material | Bronze Tube / Brass Socket |
| Accuracy | ASME B40.100 Grade B (**±**2%) |
Export to Sheets
Frequently Asked Questions
- Q: Why use a 300 PSI gauge?
- A: For systems with a working pressure of 150-200 PSI, a 300 PSI gauge is ideal. It ensures the pointer stays in the “middle third” of the dial for maximum accuracy and provides a safety margin for pressure surges.
- Q: Can this be used for steam service?
- A: For steam applications, this gauge must be installed with a coil-type siphon (pigtail) to protect the internal bronze Bourdon tube from high temperatures.
- Q: Is this gauge liquid-filled?
- A: No, the TL40 is a “dry” gauge. For high-vibration applications (e.g., directly on a reciprocating pump), consider the Weiss LF series liquid-filled gauges.
