Autoclave 30VRMM4812 Micro-Metering Valve
Micro-Metering Series
Pressures to 60,000 psi / Temperatures from -100F to +800F
Principle of Operation:
Micro-Metering valves are designed for applications where more precise control of small flow is required than is possible with a standard regulating stem. Barrel and Thimble micrometer design permits settings to be repeated.
Metering is controlled 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 calibrated 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 pressure matching shutoff valve is recommended.
Micro-Metering 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.
- Operating Temperatures vary per model but can range from -100°F to 800°F
- UNS S31600 cold worked type 316 stainless steel body; stem and seat are cold-worked type 316 stainless steel
- Packing below stem threads is PTFE for the 10VRMM, 15PVRMM and 30VRMM valves and nylon-leather for the 60VRMM; see Technical Information section for packing options
Autoclave 30VRMM4812 Micro-Metering Valve Technical Data:
- Description: 1/4″ High Pressure Micro-Metering Valve
- Pressure Rating: 30,000 psi
- Connection Size: 1/4″ OD (F250C connections)
- Connection description: HIGH PRESSURE: The High Pressure connection is a refinement of the original cone & thread joint which has been the standard connection in high pressure technology since its development by an agency of the US Government over 90 years ago. The pressure handling capabilities of this connection design have been applied successfully to control pressures in excess of 150,000 psi. All-metal sealing and working temperatures from -423F to +1200F.
- Orifice Diameter: 0.062″
- Cv: 0.004
- Temperature: standard Parker Autoclave Engineers 10VRMM, 15PVRMM and 30VRMM Series valves with PTFE packing may be operated to 450°F
- Repair Kit: R30VRMM4812
Valve Options (add the following suffixes to the valve part number):
- “B“: Cryogenic trim materials and PTFE Glass packing required when below 0°F to -100°F
- “TG“: Standard valve with PTFE Glass packing -100°F to 600°F
- “GY“: Standard valve with graphite braided yarn packing 32°F to 800°F
- “PM“: panel mount; additional #10-24 screw is included
- “CSS“: N-Dura coated stem and seat
Notes:
- Parker Autoclave Engineers valves are complemented by a complete line of fittings, tubing, check valves and line filters.
- Traceability is ensured by use of heat and purchase order codes etched on valve body that also include model number, MAWP rating, and material type references.
- All valves include connection collar and gland nut unless requested otherwise.
Please contact our Sales Department for assistance in selecting the right products for your application.
Product Catalog: Parker Autoclave Micro-Metering Valves
