描述
產品型號：2219 series
生產廠商：HOKE Incorporated
產品簡介：
附件一
2219 Series Severe Service Needle Valves
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The new Hoke 2219 Needle Valve is an excellent choice for many steam- and severe service applications. Grafoil® packing below the stem threads provides exceptional service at temperatures up to +1000° F [+538° C]. The non-rotating 316 stainless steel stem tip prevents galling.
Typical Applications
- Steam service in power plants
- Hot condensates
Features & Benefits
- Meets ANSI 900# specifications
- Grafoil® packing below threads isolates threads from media.
- Non-rotating stem tip prevents galling
- High pressure / high temperature use
- All standard components are 316 stainless steel
- Standard 316 stainless steel cast handle
- Fractional end connections available up to 1″; metric end connections up to 25mm
- GYROLOK®, female NPT, pipe, or tube socket weld end connections
- Bubble-tight leak testing at both seat and packing
- Special High Tolerance NPT Thread
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Technical Data
| Body Material |
316 stainless steel, carbon steel, Hastelloy® C-276 and Monel® |
| Maximum Operating Pressure |
6000 psig @ 70° F [414 bar @ 21° C] |
| Proof Pressure Safety Factor |
2:1 |
| Burst Pressure |
4:1 |
| Temperature Range |
−100° F to +1000° F @ 1750 psig max.
[−75° C to +538° C @ 120 bar max.] |
| Orifice Sizes |
0.170″, 0.250″, 0.312″, and 0.437″
[4.3 mm, 6.4 mm, 7.9 mm, and 11.1 mm] |
| Cv Factors* |
0.47, 1.09, and 1.20 |
* Cv factor for 0.437” orifice not available at time of publication |
