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Needle valves deliver ultra-fine flow control with tapered, needle-like stems for precise throttling of gases, liquids, and steam. Ideal for instrumentation, calibration systems, and low-flow processes requiring ±1% accuracy. Features: Micro-thread adjustments, leak-tight packing (ANSI Class IV-VI), and compact designs for panels or manifolds. Essential for labs, chemical injection, and HVAC balancing.