1. Different color and shape, avoiding confusion
2. Insert and pull out above 20,000(amount to use above 10 years)
3. Three-fettle gas valve
4. Can maintain with gas
5. Can be fixed with different pipelines, modular design, low maintenance
Gas flow capability (NL/MIN) - 30+3, OR 30-3
Check valve -
Jointing tube demension - ¢10×1