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Parker 针阀
Parker Needle Valves
Needle Valve,MicroMetering - VRMM Series 60,000PSI
Parker Autoclave's VRMM Series micro-metering valves are used for the precise metering of fluids up to 60,000 psi (4137 bar). These bar stock valves are designed with a finely tapered stem that closes in a precisely mated replaceable seat.
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.
Needle Valve,MicroMetering - VRMM Series 60,000PSI 
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
Technical Specifications
| Tube Outside Diameter: |
1/4 SpeedBite, 1/4 Cone and Thread, 3/8 Cone and Thread inch |
| Stem Type: |
Reg |
| Body Type: |
2-Way Angle |
| Maximum Operating Pressure: |
15,000, 30,000, 60,000 psi |
| Body Material: |
316 Stainless Steel |
Needle Valve,MicroMetering - VRMM Series 60,000PSI 型号
| Part |
Tube Size |
Stem Type |
Body Type |
Maximum Working Pressure (psi) |
Body Material |
| 10VRMM2812 |
1/4" SpeedBite |
Reg |
2-Way Angle |
15000 |
316 Stainless Steel |
| 30VRMM4812 |
1/4" Cone and Thread |
Reg |
2-Way Angle |
30,000 |
316 Stainless Steel |
| 60VRMM4812 |
1/4" Cone and Thread |
Reg |
2-Way Angle |
60,000 |
316 Stainless Steel |
| 60VRMM6812 |
3/8" Cone and Thread |
Reg |
2-Way Angle |
60,000 |
316 Stainless Steel |
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