Description
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
Specifications
Delivery
The cost and delivery time for your order depend on several factors, including the specific product you are ordering, the quantity, and the country of destination. Each product may have different manufacturing lead times and shipping requirements, which can affect the overall delivery schedule.
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