Needle Valve

Precise flow regulation is essential in instrumentation systems and industrial applications that require controlled fluid delivery and reliable isolation. Valves Only Canada supplies needle valves in Canada for applications requiring fine adjustment of liquid or gas flow, pressure monitoring, and control of process media. These valves feature a slender, tapered needle-shaped stem that moves toward or away from a matching seat to regulate the flow passage. 

Their design allows incremental adjustments, making them suitable for instrumentation lines, sampling systems, pressure gauges, and other applications where accurate flow control is required. Body materials, pressure ratings, connection types, and sealing arrangements are selected according to operating conditions and media compatibility. 

Features 

• Tapered needle-and-seat design for precise flow adjustment. 
• Fine-threaded stem for controlled changes in flow rate. 
• Compact construction for instrumentation and confined installations. 
• Available in straight, angle, and other configurations, depending on the model. 
• Metal-to-metal or soft-seat sealing options, depending on design. 
• Available in manual and selected automated configurations. 
• Multiple end connections, including threaded, compression, and socket-weld options, depending on model. 

Technical Specifications 

Standards and Testing 

Needle valves are manufactured and tested according to applicable product specifications, connection requirements, and intended service conditions. ASME B1.20.1 covers inch-based general-purpose pipe threads where applicable to threaded connections. ASME B16.11 addresses forged fittings, including socket-welding and threaded fittings, where relevant to the connection design. For instrumentation valves, manufacturers may also apply relevant industry specifications and project-specific pressure-testing procedures.

Industries Served