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HN49 Series

The HN49 Series is a heavy duty needle valve that features an industrial strength stem and bonnet, and enhanced packing arrangement, all designed to handle the tough conditions of high pressure and high temperature services.

With a multitude of configurations available, you'll find a model to meet your varying needs. The HN49 is produced in 1/4", 3/8", 1/2", 3/4" and 1" sizes, and can be provided with male or female threaded connections, male or female socket weld ends, or tube nut connections.


Features & Benefits




Backseated Bonnets with packing below the stem threads - to eliminate potential thread contamination by the process media, the packing is located below the stem threads. Backseating minimizes fugitive emissions with a metal-to-metal backseat that also prevents accidental removal or stem blow-out in operation.
Wide selection of packing materials - choose fully packed (TFE-Chevron or high temperature graphite) bonnets, or o-ring seals.
Wide selection of packing materials - choose fully packed (TFE-Chevron or high temperature graphite) bonnets, or o-ring seals.
Non-rotating tip stem - provides repeatable shutoff without the galling or cross-scoring that occurs on ball type stems. Because the NRT conical stem tip stops rotating when it contacts the seat, further torque turns the stem, but not the tip, protecting the stem tip from damage.