Product details
Weiss Pressure Gauge Accessory | LH-14FF | 1/4″ NPT | Chrome Plated Brass
Product Description
The LH-14FF is a compact isolation valve commonly used in HVAC and industrial mechanical rooms across the UAE. The “LH” identifies this as a Lever Handle style valve, while the “14FF” denotes the 1/4″ NPT Female x 1/4″ NPT Female connection ports.
In mechanical systems in Dubai and Abu Dhabi, these valves are typically installed directly beneath a pressure gauge. Unlike standard “T-handle” gauge cocks, the ball valve design of the LH-14FF offers a “bubble-tight” shut-off and a clear visual indication of whether the valve is open or closed (the lever is parallel to the pipe when open). The chrome-plated brass construction provides excellent resistance to the humid and saline environments typical of the Middle East.
Key Features
- Chrome Plated Brass Body: Offers superior corrosion resistance and a professional, high-end finish compared to standard brass or iron valves.
- Quarter-Turn Operation: The lever handle allows for rapid and easy shut-off, making it significantly more user-friendly than multi-turn needle valves.
- Bubble-Tight Seal: Features a precision-ground ball and high-quality seats to ensure zero leakage when the gauge is isolated.
- 1/4″ NPT Female x Female: Standard sizing for industrial pressure gauges, allowing for seamless integration into gauge manifolds and branch lines.
- High-Visibility Lever: The yellow or red coated handle provides an immediate visual status check of the instrument line.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | LH-14FF (or WI-LH14FF) |
| Material | Chrome Plated Brass |
| Connection Size | 1/4″ NPT Female x 1/4″ NPT Female |
| Pressure Rating | 450 PSI at 70°F |
| Max Temperature | 250°F (120°C) |
| Handle Type | Lever Handle (Yellow/Red Sleeve) |
| Application | Gauge Isolation / HVAC / Plumbing |
Frequently Asked Questions
- Q: Why use the LH-14FF instead of a standard T-handle gauge cock (TC-14)?
- A: The ball valve design of the LH-14FF provides a much more reliable seal and is rated for higher pressures (450 PSI vs. 200 PSI). It is the preferred choice for modern high-rise booster systems and chilled water lines in the UAE.
- Q: Is this suitable for potable water?
- A: While chrome-plated brass is highly durable, for potable (drinking) water systems in the UAE, you should verify if the project requires a Lead-Free (LF) certified valve.
- Q: Can this be used for steam?
- A: It is rated up to 250°F, making it suitable for low-pressure steam; however, for high-pressure industrial steam, a dedicated steam-rated needle valve or heavy-duty gauge cock is recommended.