Block and Bleed Needle Valve

MVBB Series Block and Bleed Valve to 20,000 psi (1379 bar)


Since 1945 Parker Autoclave Engineers has designed and built premium quality valves, fittings and tubing. Autoclave's Block and Bleed valve is designed for calibration applications and built for safe reliable operation to 20,000 psi (1379 bar).


  • Medium Pressure Tubing sizes: 1/4" - 3/8"

  • MVBB series provides large valve performance in a small package.

  • Rising stem/bar stock body design.

  • Metal-to-metal seating for excellent corrosion resistance and temperature ranges.

  • PTFE encapsulated packing provides dependable stem and body sealing.

  • Vee tip stem.


Parker Autoclave's Block and bleed valves are used in many applications such as the chemical/petrochemical, and oil and gas industries. This valve utilizes the coned and threaded design for bubble-tight seal performance in gas and liquid service. This is a two stem manifold valve providing a convenient method of blocking, bleeding and calibrating pressure transducers and gauges. These valves are complemented by a complete line of fittings, tubing and accessories.

Block and Bleed Needle Valve