High pressure needle valves
The HH Series is a heavy duty, high pressure needle valve that features an industrial strength stem and bonnet and enhanced packing arrangement all designed to handle the tough conditions of high pressure service.
With a multitude of configurations available, you will find a model to meet your varying needs. The HH Series is produced in 1/8", 1/4", 3/8" 1/2" NPT ends and 1/4", 3/8" and 9/16" cone and threaded ends. Other high pressure connections are available upon request. For corrosive or other volatile applications, the HH Series can be specified in a variety of materials including Titanium, Hastelloy and Inconel.
- Packing materials: TFE or high pressure graphite
- Backseated bonnets with packing below the stem threads – to eliminate potential thread contamination by the process media
- Non-rotating tip (NRT) stem: provides tight, repeatable shutoff without galling or cross-scoring that occurs on ball type stems
Maximum working pressure: up to 15,000 psi (1035 bar)
Temperature ratings: -100°F to +450°F (-73°C to +232°C); high temperature materials available for severe up to 1100°F (593°C)