Autoclave Engineers manufactures a variety of needle valves, including low and medium pressure types with a non-rotating rising stem design, and working pressures up to 2000 psi. These products come in tube size ranges of 1/4" up to 1", and feature 316s stainless steel construction with operating temperatures of 0 F - 650 F.

Innovative Pressure Technologies is a manufacturer specializing in precision products for fluid control devices, including pipe needle valves with psi ratings up to 15000, non-rotating stems, integral through-holes for bracket mounting and a choice of nine body styles for a wide range of applications.

Maxpro manufactures a variety of medium pressure valves and fittings, as well as high pressure needle valves and tubing for pressures up to 60,000 psi for many applications.