1. Anti-siphon, pressure type design, ensure posivitive shut-off with different water pressure 
2. Thread optional: G 1/2'' or 15/16'' or G 1/2'' brass 
3. Helical structure, effetive to filtrate the dirt in water and easy to clean 
4. Height of main body can be adjustable from 200mm to 300mm 
5. Water pressure 1.5-240 p. S. I. G(0.1-16bar).