Parker Autoclave's QS Series needle valves are designed as a high flow, non-rotating rising stem valve, with working pressures to 15,000 psi (1034 bar). These needle valves utilize a revolutionary single ferrule compression sleeve design (QS) for fast and easy installation.  The valves are designed to be used with Parker Autoclave tubing in sizes ranging from 1/4"" to 1"". Operating temperatures can go from
-100F to 650°F (-73°C to 343°C) with special graphite braided yarn packing (GY). 316 stainless steel construction is the standard material with other options available. Along with their many features these valves provide dependable and trouble free service in wide variety of applications.

Markets:
• Oil and Gas
• Petrochemical
• Chemical


Features/Benefits:
• Tubing sizes from 1/4" to 1".
• Revolutionary Compression Ferrule (QS) allows working pressures to 15,000 psi (1034 bar) in all tubing sizes.
• Non-rotating stem prevents stem/seat galling.
• Anti-galling molybdenum disulfide coated gland nuts.
• Gland nut positioning mark for assembly.
• Connection weep holes for safety and leak detection.
• Metal-to-metal seating achieves bubble-tight shut-off, longer stem/seat life in abrasive flow, greater durability for repeated on/off cycles and excellent corrosion resistance.
• Stem sleeve and packing gland material have been selected to achieve extended thread cycle life and reduced handle torque.
• Choice of Vee or Regulating stem tip.
• Available in two body patterns.

Applications:
• Medium Pressure Skid Panels
• Chemical Injection
• Medium Pressure Fluid Handling Systems
• Test Benches