This document introduces the technical specifications and features of the VNA aluminum alloy supersonic drainage nozzle. The nozzle balances the airflow inside the blowing pipe to distribute the compressed air evenly to each blowing hole, ensuring that the compressed air for dust removal is injected into the center of the filter bag vertically. Compared with ordinary blowing systems, installing this nozzle can reduce the resistance caused by blowing holes, and improve the dust removal efficiency.
This manual describes Gaoyuan's VNA series aluminum alloy supersonic drainage nozzles, which balance airflow in the spray pipe to deliver uniform compressed gas to each spray hole, improving dust‑removal performance in pulse dust collectors. It explains the advantages of the alloy nozzle over conventional open‑hole designs, including a higher An/Ap ratio for optimal cleaning.
The document lists dimensions, weights, material details, temperature limits, and installation guidelines such as the recommended mounting height formula. It also details the compatible nozzle models for 1" and 1.5" spray pipes and provides specifications for the nozzle core parts and sealing options. This manual is written in Chinese.
| Weight (VNA25C-50) | 0.175 kg |
|---|---|
| Weight (VNA25C-100) | 0.220 kg |
| Weight (VNA45C-50) | 0.160 kg |
| Weight (VNA45C-100) | 0.205 kg |
| Operating temperature range (aluminum alloy nozzle) | -60 °C to 400 °C |
| An/Ap ratio (installed) | up to 1.5 |
| Recommended installation height | H = (Ø – 48) / 0.353 mm |
The recommended height is calculated by H = (filter bag diameter Ø – 48) / 0.353 mm.
The aluminum alloy nozzle can operate from –60 °C up to 400 °C.
When installed, the nozzle achieves an An/Ap ratio of up to 1.5.