Product details
Weiss Pressure Gauge | 4PB1-200 | 4″ Dial | 0-200 PSI/kPa
Product Description
The 4PB1-200 is part of the Weiss professional series, offering a more heavy-duty alternative to standard utility gauges. The “4” indicates a 4-inch (100 mm) dial size, while the “PB” (Phenolic/Plastic Back-mount compatible style) typically refers to its rugged, industrial-grade housing. The “1” usually signifies Brass/Bronze internals, which are the industry standard for non-corrosive fluid service.
This model features a pressure range of 0 to 200 PSI (0 to 1400 kPa). This range is specifically optimized for Domestic Water Booster Systems and Chilled Water (CHW) supply lines in medium-to-high rise buildings, providing excellent resolution for systems typically operating in the 100-150 PSI range. The gauge features a dual-scale display to meet the diverse engineering standards in Dubai and Abu Dhabi.
Key Features
- Industrial 4″ High-Visibility Dial: Provides a large, high-contrast display with bold black and red markings, allowing for precise monitoring from a distance.
- Dual Scale (PSI/kPa): Displays pressure in both imperial (PSI) and metric (kPa) units, ensuring compatibility with international project requirements.
- Precision Bronze Internals: Equipped with a high-quality phosphor bronze Bourdon tube and a brass movement for consistent accuracy and smooth needle travel.
- Rugged Housing: Built to withstand the mechanical vibrations and environmental stresses of a busy plant room.
- Standard Connection: Features a 1/4″ NPT brass connection at the bottom (Lower Mount), making it compatible with most standard piping manifolds and isolation valves.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | 4PB1-200 (Standard Lower Mount) |
| Dial Size | 4″ (100 mm) |
| Range | 0 – 200 PSI / 0 – 1400 kPa |
| Internal Material | Bronze Tube / Brass Socket |
| Mounting Type | Lower Mount (Bottom) |
| Connection Size | 1/4″ NPT |
| Case Material | Reinforced Polycarbonate / Black Steel |
| Accuracy | ASME B40.100 Grade A (**±**2-1-2%) |
Frequently Asked Questions
- Q: What is the benefit of the 4″ 4PB1 over a 2.5″ utility gauge?
- A: The 4PB1 is a higher grade of instrument with better accuracy and a larger dial, making it much easier for maintenance teams to perform routine checks from floor level.
- Q: Can this gauge be used for chilled water return lines?
- A: Yes, though for return lines (which are lower pressure), a 0-100 PSI or 0-160 PSI gauge might offer even better resolution. The 200 PSI model is excellent for the supply side.
- Q: Does this gauge require a siphon?
- A: Only if used on steam service. For water, air, or oil, it can be mounted directly or via a needle valve.