Product details
Weiss Liquid Filled Gauge | LF441-600-4L-BR | 4″ Dial | 0-600 PSI/BAR
Product Description
The LF441-600-4L-BR is engineered to provide precision readings where standard dry gauges would fail due to mechanical stress. The gauge is Glycerin Filled, which dampens the internal movement to eliminate “needle flutter” caused by rapid pressure pulsations or equipment vibration. This makes it an essential instrument for high-pressure machinery in Dubai and Abu Dhabi, such as industrial compressors and hydraulic power units.
This model features a 4-inch (100 mm) dial with a dual-scale range of 0-600 PSI (0-40 BAR). The “BR” designation indicates high-quality brass internals, while the “4L” confirms a 1/4″ NPT Lower (Bottom) Mount connection. Housed in a corrosion-resistant 304 Stainless Steel case, this gauge is hermetically sealed to prevent internal fogging and moisture ingress, ensuring long-term reliability in the UAE’s humid coastal climate.
Key Features
- Vibration Dampening: Glycerin filling stabilizes the pointer and protects internal gears from premature wear in high-vibration applications.
- High-Visibility 4″ Dial: The oversized face provides a clear, high-contrast display for easy monitoring in large plant rooms.
- 304 Stainless Steel Case: Offers superior resistance to rust and environmental degradation compared to standard steel cases.
- Dual Scale (PSI/BAR): Simultaneously displays imperial and metric units, satisfying international engineering requirements in the Middle East.
- Internal Pressure Relief: Includes a ventable fill plug to allow for internal pressure equalization, maintaining accuracy during significant temperature shifts.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | LF441-600-4L-BR |
| Dial Size | 4″ (100 mm) |
| Range | 0 – 600 PSI / 0 – 40 BAR |
| Filling | Glycerin (Standard) |
| Connection Location | Lower Mount (Bottom) |
| Connection Size | 1/4″ NPT |
| Case Material | 304 Stainless Steel |
| Internal Material | Copper Alloy / Brass |
| Accuracy | $\pm$
1.0% of Full Scale (ASME B40.100 Grade 1A) |
Frequently Asked Questions
- Q: Can this be used for high-pressure fire pump discharge?
- A: Yes, the 600 PSI range is ideal for high-pressure fire protection systems, and the liquid filling handles the intense vibration of the pump motor.
- Q: Is this gauge suitable for corrosive chemicals?
- A: While the case is stainless steel, the internals are brass. For corrosive chemicals, you would require a model with 316 Stainless Steel internals (wetted parts).
- Q: What is the benefit of the 4″ dial over a 2.5″ dial?
- A: In industrial settings, a 4″ dial is much easier to read from a distance and provides higher resolution for the 600 PSI scale, allowing for more precise pressure tracking.