How it works
Multi-turn handwheel
Two-way globe valve
The number that matters
Max. medium temperature
190°C
The highest medium temperature this valve is rated for.
Construction
Parts and materials
Applications
Media and industries
- Water
- Steam
- Neutral Liquids
Needle valves are designed to shut off and regulate the flow of water, gas, oil products, vapour-water mixture and other media in process lines of pipelines and instrumentation and control systems, small diameter linear pipelines with transportation of high pressure liquid and gaseous media.
Working principle. A distinctive feature of the needle valve is a conical needle-like apex at the end of the valve stem. When the T-handle is turned, the stem moves up or down, which changes the position of the needle relative to the seat. The longer part of the needle is smaller than the hole in the valve seat and passes through the hole in front of the needle. This design allows smooth regulation of the medium flow rate with relatively high accuracy.
Technical characteristics of needle valves DNOVA VN31M-T-Ht threaded needle valve, body - stainless steel 304, seal - metal, with T-handle
| Characteristic | Value |
|---|---|
| Nominal diameter DN | 8÷50 mm |
| Nominal pressure PN | 400 bar |
| Operating temperature | from -20°C to +190°C |
| Working medium | water, steam, and liquids compatible with valve materials |
| Flow direction indicator | arrow on valve body |
| Leakage class | "A" |
| Pipe connection | BSPP thread |
| Areas of application | heating and water supply systems, industrial pipelines |
| Average service life | 5 years |
| Country of origin | China |
Overall and installation dimensions of needle valves DNOVA VN31M-T-Ht
| DN | L, mm | BSP | H, mm | D0, mm | Weight, kg |
| DN8 | 57 | G 1/4" | 82 | 57 | 0.35 |
| DN10 | 57 | G 3/8" | 82 | 57 | 0.35 |
| DN15 | 57 | G 1/2" | 90 | 63 | 0.35 |
| DN20 | 70 | G 3/4" | 110 | 70 | 0.5 |
| DN25 | 69 | G 1" | 123 | 77 | 0.8 |
| DN32 | 84 | G 1 1/4" | 140 | 99 | 1 |
| DN40 | 93 | G 1 1/2" | 156 | 99 | 2 |
| DN50 | 103 | G 2" | 160 | 99 | 3 |
Sketch of dimensions of needle valves DNOVA VN31M-T-Ht
Materials of parts of needle valves DNOVA VN31M-T-Ht
| No | Name | Material |
|---|---|---|
| 1 | Body | Stainless steel AISI/SS 304 |
| 2 | Plunger | Stainless steel AISI/SS 304 |
| 3 | Plunger seal | PTFE |
| 4 | Handle | Aluminum alloy |
Material sketch of needle valves DNOVA VN31M-T-Ht
- Body material
- Stainless steel AISI 304
- Maximum allowable temperature
- 190 °C
- Connection type
- Threaded
- Control type
- Manual (handle, gearbox)
- Operating environment
- Water, Steam, and Neutral Liquids
- Type of seal
- Metal
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.
Total items
Product subtotal