Needle Valves (AVNVM)
The AVNVM Needle valve provides ultra-precise flow control for critical high purity and aggressive chemical applications in the Semiconductor and Life science industries. The design features a parabolic shape that provides a linear flow rate across the full range of operation.
The needle and diaphragm are integrated into a single PTFE component preventing media from leaking into the valve bonnet. The novel needle/diaphragm also includes a small sealing cone around the base of the needle, insuring an excellent seal and protecting the needle from damage.
The AVNVM needle valve utilizes a unique duel-stem actuator. Both stems are threaded with a different pitch that functions similar to a reduction gear. The unique actuation allows a relatively large rotation of the handle to translate into micro movements of the needle allowing for very fine tuning of the flow rate.