Micro-Metering Needle Valve

VRMM Series, Micro Metering Valves to 60,000 psi (4137 bar)


Since 1945 Parker Autoclave Engineers has designed and built premium quality valves, fittings and tubing. Parker Autoclave Engineers VRMM series Micro-metering valves are used for the precise metering of fluids up to 60,000 psi (4137bar). These valves are used for fine metering only in conjunction with a shut off valve if closure is needed.


  • Tubing sizes from 1/8" to 3/8".

  • Barrel and Thimble design for precise adjustment.

  • Packing below the stem threads.

  • Replaceable seat design standard.


Parker Autoclave Engineers high-pressure Micro-metering valves are designed for applications where more precise control of small flows is required than possible with a standard regulating stem. Thimble micro-meter design permits settings to be repeated. These valves are for metering only and cannot be used as a shutoff valve. Shutoff valves should be placed in series if required. These valves are complemented by a complete line of fittings, tubing and accessories.

Micrometering Needle Valves