Parker Autoclave Engineers High Pressure Needle Valves are rated to pressures up to 30,000 psi (2068 bar), 40,000 psi (2760 bar), 43,000 psi (2965 bar), 60,000 psi (4137 bar) and 150,000 psi (10350 bar). Features including tubing sizes from 1/4” to 1”. The non-rotating stem prevents stem/seat galling and body design consists of a rising stem/barstock. For dependable stem and body sealing 30SC, 43SC and 30VM valves are furnished with PTFE encapsulated packing; the 40VM and 60VM valves feature nylon/leather packing below threads. Choice of Vee or Regulating stem tips.