NEEDLE VALVE (MALE X FEMALE)
NEEDLE VALVE (MALE X FEMALE)
A Needle Valve (Male x Female) is a precision flow control valve designed with a male-threaded inlet and a female-threaded outlet. It is commonly used in process and instrumentation systems to regulate, isolate, or throttle flow of liquids and gases. The fine-threaded stem and needle-shaped plunger allow for accurate flow control, making it ideal for applications where flow rates must be precisely adjusted.
This type of valve is widely used in oil & gas, chemical processing, power generation, water treatment, and laboratory setups where durability, leak-tight sealing, and fine flow control are critical.
- Thread Configuration: Inlet with male thread, outlet with female thread (NPT, BSP, BSPT, or metric).
- Tapered needle stem: Provides precise throttling and shut-off.
- Blow-out proof stem design: Enhances safety in high-pressure systems.
- Non-rotating tip: Reduces seat wear and ensures long-term sealing.
- Packing materials: PTFE, graphite, or other materials based on temperature and media compatibility.
- Materials available: SS304, SS316, brass, carbon steel, Monel, etc.
- Pressure ratings: Up to 6,000 psi (414 bar) or higher based on size and material.
- Allows precise flow regulation for low- to high-pressure applications.
- Compact and simple to install, especially in tight piping systems.
- Reduces the need for additional fittings due to mixed connection types.
- Minimizes leakage risk with robust stem sealing and quality threads.
- Supports safe operation in aggressive media and harsh environments.
- Enhances instrument protection by controlling surge or pulsation effects.
| Valve Size | Inlet (Male Thread) | Outlet (Female Thread) | Orifice Size (mm) | Pressure Rating | Typical Cv |
|---|---|---|---|---|---|
| 1/8″ | 1/8″ NPT Male | 1/8″ NPT Female | 1.5 – 2.0 | Up to 6,000 psi | 0.10 – 0.20 |
| 1/4″ | 1/4″ NPT Male | 1/4″ NPT Female | 2.5 – 3.0 | Up to 6,000 psi | 0.25 – 0.35 |
| 3/8″ | 3/8″ NPT Male | 3/8″ NPT Female | 3.5 – 4.0 | Up to 5,000 psi | 0.40 – 0.60 |
| 1/2″ | 1/2″ NPT Male | 1/2″ NPT Female | 4.0 – 5.0 | Up to 5,000 psi | 0.60 – 0.80 |
| 3/4″ | 3/4″ NPT Male | 3/4″ NPT Female | 5.0 – 6.0 | Up to 4,000 psi | 0.80 – 1.10 |
| 1″ | 1″ NPT Male | 1″ NPT Female | 6.0 – 8.0 | Up to 3,000 psi | 1.10 – 1.50 |