Peter Janku,Steven C. Renquist,James Zimmerman,Saroj Manandhar,Robert Ferry
申请号：
US14728879
公开号：
US20150351332A1
申请日:
2015.06.02
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A sprinkler assembly is disclosed, having a flow control valve accessible from an exterior of the assembly, a backflow preventer valve that prevents water and debris from being sucked into a sprinkler when water pressure stops, and a safety valve that prevents watering when the sprinkler is missing from the assembly.
