Parker Autoclave Engineers MicroMetering valves are designed for applications where more precise control of small flows is required than is possible with a standard regulating stem. Barrel and Thimble micrometer design permits settings to be repeated. Metering is effected by a finely tapered stem acting in a precisely mated replaceable seat. Very fine stem position is achieved utilizing a 40 TPI thread. The Barrel and Thimble are set for proper metering at the factory.
MicroMetering Valve Features:
- Barrel and Thimble design permits repeatable settings.
- Barrel divisions every 0.025”
- 25 Thimble divisions, each representing 0.001” stem travel
- One revolution = 0.025” stem travel
- Cold-worked type 316 stainless steel body with stainless steel packing gland. Stem and seat are cold-worked type 316 stainless steel.
- Packing below stem threads is PTFE for the 10VRMM and 30VRMM valves and nylon leather for the 60VRMM. For packing options, see Technical Information Section.