Product details
Weiss Liquid Filled Gauge | LF441 | 4″ Dial | 0-1000 PSI/BAR
Product Description
The LF441-1000 is part of the premier LF44 series, specifically built to provide reliable readings in environments that would damage a standard “dry” gauge. The Glycerin filling acts as a dampener, stabilizing the pointer against mechanical vibration and protecting the internal movement from wear. This makes it an essential instrument for high-pressure pump discharge and hydraulic power units in Dubai and Abu Dhabi.
This model features a high-visibility 4-inch (100 mm) dial with a dual-scale range of 0-1000 PSI (0-70 BAR). Housed in a durable 304 Stainless Steel case with a 1/4″ NPT Lower (Bottom) Mount connection, it is hermetically sealed to prevent internal fogging and moisture ingress—a crucial feature for the UAE’s humid and saline coastal conditions.
Key Features
- Vibration Dampening: Glycerin filling ensures a steady pointer and extends the life of the gear mechanism in high-shock environments.
- Large 4″ Dial face: Provides superior resolution for high-pressure readings, ensuring accuracy and readability from a distance.
- Corrosion-Resistant Housing: The 304 Stainless Steel case offers exceptional protection against rust and environmental degradation.
- Dual Scale Readout: Simultaneously displays PSI and BAR, satisfying international engineering and safety requirements in the Middle East.
- Precision Internals: Features high-quality brass/bronze internals for consistent performance with non-corrosive air, water, and oil.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | LF441-1000 |
| Dial Size | 4″ (100 mm) |
| Range | 0 – 1000 PSI / 0 – 70 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: Is this gauge suitable for hydraulic systems?
- A: Yes, the 1000 PSI range and liquid filling make it an ideal choice for monitoring hydraulic fluid pressure where vibration is high.
- Q: Can it be used for steam service?
- A: Only if used with a siphon (pigtail) to protect the internal brass components and glycerin from high steam temperatures.
- Q: Why is there a small air bubble at the top of the gauge?
- A: The bubble is an expansion chamber that allows the glycerin to expand and contract as the ambient temperature changes without leaking or damaging the seals.
