1) Size: 1/2''(DN15), 3/4''(DN20), 1''(DN25)
2) Rated working pressure: 0.5MPa
3) Working pressure range: 0.3～0.6MPa
4) Material: brass thread and stainless steel net
5) Expansion rate of foam: ＞＝5
6) Diameter of protection: 3.5m
7) K factor: DN15=19，DN20=30, DN25=40
2) Rated working pressure: 0.5MPa
3) Working pressure range: 0.3～0.6MPa
4) Material: brass thread and stainless steel net
5) Expansion rate of foam: ＞＝5
6) Diameter of protection: 3.5m
7) K factor: DN15=19，DN20=30, DN25=40