Key Features
- Precise flow regulation with tapered needle and fine-thread stem
- Corrugated hose connections on both ends for flexible mounting
- Marine-grade brass body resists corrosion and dezincification
- Compact straight-through design saves space
- Suitable for water, hydraulic oil, compressed air, and low-pressure steam
- Ideal for instrumentation, pilot lines, and control systems
Technical Specifications
| Property | Specification |
|---|---|
| Material | Marine-grade brass (forged body) |
| End Connections | Corrugated hose ends (both sides) |
| Size Range | 1/4" to 3/4" |
| Working Pressure | Up to 600 psi (41 bar) |
| Working Temperature | -20°F to 400°F (-29°C to 204°C) |
| Seat Type | Metal-to-metal |
| Packing | PTFE |
| Application | Instrumentation, control lines, marine piping |
| IMPA Code | 752136 |
Frequently Asked Questions
What is a needle valve used for?
A needle valve is designed for precise flow regulation. The tapered needle and matching seat allow fine adjustment, making it ideal for instrumentation, gauge lines, and control circuits where accurate flow rates are critical.
Why choose a valve with corrugated hose ends?
Corrugated hose ends provide flexible connections that absorb vibration, thermal expansion, and minor misalignment. This reduces stress on pipework and helps prevent leaks in marine installations subject to engine vibration and movement.
Can this brass needle valve be used in seawater systems?
While brass offers good corrosion resistance in many marine environments, for continuous seawater exposure it is advisable to use a valve with specialized copper-nickel or stainless steel internals. For low-pressure freshwater or closed-loop systems, brass is a reliable and cost-effective choice.
What is the maximum working pressure?
The typical maximum working pressure for this valve is 600 psi (approximately 41 bar). Always verify the exact rating on the valve body and ensure it meets the requirements of your specific application.
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