Autoclave 15PVRMM4812 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 15PVRMM4812 Micro-Metering Valve Technical Data:
- Description: 1/4″ FNPT Micro-Metering Valve
- Pressure Rating: 15,000 psi
- Connection Size: 1/4″ FNPT connections
- Connection description: Parker Autoclave Engineers use high quality UNS S31600/S31603 316/316L material cold worked to our stringent specifications that enable certification of NPT style Instrument Pipe Fittings to a maximum working pressure of 15,000 psi. It’s the strength of the material that allows this superior pressure rating and care should be taken to only use with other similar fittings made to the same specification.
- 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: R15PVRMM
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; NPT Pipe Connections can be used from -100°F to 400°F
- “GY“: Standard valve with graphite braided yarn packing 32°F to 800°F; NPT Pipe Connections can be used from -100°F to 400°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.
- NPT threads must be sealed using a high quality PTFE tape (3 wraps minimum) and/or thread sealant paste product suitable for process temperature.
- Refer to thread sealant manufacturer’s instructions for application instructions. A good thread lubrication product (metal flake style) capable of process temperatures is also
necessary to prevent thread galling. - Sealing performance may vary based on many factors such as pressure, temperature, media, thread quality, thread material, proper engagement, and proper use of thread sealant.
- End user should limit the number of times an NPT fitting is assembled and disassembled as thread deformation during assembly will result in deteriorating seal quality over time.
Please contact our Sales Department for assistance in selecting the right products for your application.
Product Catalog: Parker Autoclave Micro-Metering Valves
