This technical manual describes the characteristics and features of the aluminum alloy supersonic drain nozzle, including balanced airflow, vertical injection of jet airflow into the center of the filter bag, and reduced resistance. The recommended installation height and installation hole size are also detailed in the document.
This document provides an overview of GOYEN's VNA series supersonic drainage nozzles, which are made of die‑cast aluminum alloy and designed for use with 1" and 1.5" spray pipes in pulse‑cleaning dust collectors. It explains the design benefits, such as improved airflow distribution and higher Am/Ap ratios, which enhance cleaning performance.
The manual lists the applicable models (VNA25C‑50, VNA25C‑100, VNA45C‑50, VNA45C‑100), their dimensions and weights, material details, and installation recommendations, including the required mounting hole size and recommended installation height formula. This manual is written in Chinese.
| VNA25C-50 dimension | 0.175 |
|---|---|
| VNA25C-100 dimension | 0.220 |
| VNA45C-50 dimension | 0.160 |
| VNA45C-100 dimension | 0.205 |
| Recommended installation height | H = (bag opening diameter - 48) × 10.353 mm |
| Material | Die‑cast aluminum alloy |
The recommended installation height is calculated as H = (bag opening diameter - 48) × 10.353 mm.
The VNA25C‑50, VNA25C‑100, VNA45C‑50, and VNA45C‑100 models are suitable for 1" spray pipes.
The VNA nozzles are made from die‑cast aluminum alloy.