Parker Autoclave's VRMM Series micro-metering 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.
These valves are designed for metering only and cannot be used as a shutoff valve. Minimum flow is factory set and occurs at “0” position. DO NOT OPERATE THE VALVE BELOW THE ZERO POSITION OR DAMAGE WILL RESULT. When shutoff action is required, a correlated shutoff valve from Parker AE series 10V, 30VM or 60VM should be installed in series with the micro-metering valve.
Along with their many features these micro-metering valves provide dependable and trouble free service in wide variety of applications.
Markets:
• Oil and Gas
• Petrochemical
• Chemical
• Research
Features/Benefits:
• 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.
• SpeedBite “W” connections are used on the 10VRMM valves and Parker AE High Pressure coned-and-threaded connections on 30VRMM and 60VRMM valves.
Applications:
• High Pressure Pilot Plants
• Research Panels
• High Pressure Fluid Handling Systems
