Miniature needle valve with a DN20 (NPS 3/4) size, pressure class PN40 to PN200 (Class 300 to Class 1500), available in various body materials such as 20, 304, to suit different operating conditions and control the flow of reducing water.

The valve disc structure is in a needle shape, designed for low flow, ensuring minimal leakage, wide adjustment range, and more precise control of the reducing water, with a simple structure and low failure rate. The valve plug and seat are sealed with a conical surface, featuring a hard alloy sealing face, with a standard leakage rate of V grade. Different flow coefficients Cv values are available for valves of the same bore size, significantly enhancing the sensitivity and accuracy of the temperature control system. The flow characteristic employs a proportional characteristic, with a adjustable ratio of 20:1, ensuring stable adjustment.