Product details
Weiss Liquid Filled Gauge | LF441 | 4″ Dial | 0-160 PSI/BAR
Product Description
The LF441 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 pulses or equipment vibration. This ensures an accurate, steady reading and significantly extends the life of the instrument in demanding Dubai and Abu Dhabi mechanical rooms.
This model features a 4-inch (100 mm) dial with a dual-scale range of 0-160 PSI (0-11 BAR). The “1” in the LF441 designation signifies a Lower (Bottom) Mount connection. Housed in a corrosion-resistant 304 Stainless Steel case, the 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 from a distance 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 |
| Dial Size | 4″ (100 mm) |
| Range | 0 – 160 PSI / 0 – 11 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 Span (ASME B40.100 Grade 1A) |
Frequently Asked Questions
- Q: Can this gauge be used for domestic water pumps?
- A: Yes, the 160 PSI range is ideal for standard booster sets, and the liquid filling handles the vibration from the pump motor effectively.
- Q: Why is there a small air bubble at the top of the gauge?
- A: The air bubble is intentional; it acts as a buffer to allow the glycerin to expand and contract with temperature changes without damaging the case seal.
- Q: Is this gauge suitable for chilled water?
- A: It is a standard specification for chilled water headers in many UAE commercial projects.