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NV General-purpose Needle Valve
Classification: Needle Valves&Pressure Gauge Valves
Max. Working Pressure: 350bar
DN:5～15mm
Working Temperature: -50℃～+230℃
Body Material: 304、316L、2507 Stainless steel
Product details：
NV Stainless Steel Needle Type Globe Valve (1/4″~1″)
Uses: applicable to flow regulation and intended for throttling and shutoff
Features: NV needle valve has a high pressure rating and it is easy to switch; the stem seal is compensated with a disc spring to ensure good tightness in high or low temperature applications; the stem has undergone case hardening; the valve has a long life and allows for frequent switching.
Applicable media: steam, water, oils and other gases or liquids compatible with the valve material
Metal material: 304 or 316L stainless steel or super duplex stainless steel 2507
(316L or 2507 is used for only components of the needle valve that are exposed to the media)
Sealing material: PTFE packing
Type of handle: straight handle (standard)
Working temperature: -50℃~+230℃
I) Needle Valves with Threaded Connections
Ordering Information
Pressure Rating-Temperature Table
| Seal Packing | PTFE |
| Temperature [℃] | Max. Working Pressure [bar] |
| -50～+80℃ | 350 |
| ～+120℃ | 280 |
| ～+160℃ | 230 |
| ～+200℃ | 180 |
| ～+230℃ | 130 |
Parameters Table：
Table of Technical Data [mm]
| Type of Connection | 304 Needle Valve Ordering Number |
316L Needle Valve Ordering Number |
Connection Thread A | DN | H | L | Square Body D*E |
Max. Working Pressure [bar] | |
| Inlet | Outlet | ||||||||
| G Female Thread | G Female Thread | NV-G1/4-SS | NV-G1/4-SL | G1/4 | 5 | 65 | 54 | 20*22 | 350 |
| NV-G3/8-SS | NV-G3/8-SL | G3/8 | 6.5 | 68 | 57 | 25*25 | 350 | ||
| NV-G1/2-SS | NV-G1/2-SL | G1/2 | 9 | 72 | 64 | 28*32 | 315 | ||
| NV-G3/4-SS | -- | G3/4 | 12 | 81.5 | 75 | 35*40 | 250 | ||
| NV-G1-SS | -- | G1 | 15 | 92 | 88 | 50*50 | 250 | ||
| NPT Female Thread | NPT Female Thread | NV-1/4NPT-SS | NV-1/4NPT-SL | 1/4NPT | 5 | 65 | 55 | 20*22 | 350 |
| NV-3/8NPT-SS | -- | 3/8NPT | 6.5 | 68 | 57 | 25*25 | 350 | ||
| NV-1/2NPT-SS | -- | 1/2NPT | 9 | 72 | 64 | 28*32 | 315 | ||
| NPT Male Thread | NPT Female Thread | NV-1/4NPT-M/F-SS | NV-1/4NPT-M/F-SL | 1/4NPT | 5 | 65 | 55 | 20*22 | 350 |
| NV-1/2NPT-M/F-SS | -- | 1/2NPT | 9 | 72 | 66 | 28*32 | 315 | ||
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