초록 ▼

A pop-up sprinkler has a diaphragm-type valve in the lower end thereof which is actuated by a remote pilot valve. The pilot valve may be either solenoid actuated, or hydraulically actuated by a suitable valve actuator component. In a first embodiment an upwardly opening valve actuator component asse

A pop-up sprinkler has a diaphragm-type valve in the lower end thereof which is actuated by a remote pilot valve. The pilot valve may be either solenoid actuated, or hydraulically actuated by a suitable valve actuator component. In a first embodiment an upwardly opening valve actuator component assembly housing communicates with a hollow wire and hose housing. The wire and hose housing connects to the side of the cylindrical outer body of the sprinkler to position a lid of the valve actuator component assembly housing at surface level, but outside a circular ground support flange connected to the sprinkler body. In a second embodiment, the housing is situated so that the lid effectively forms part of the circular ground support flange. The valve actuator component assembly housing may contain, for example, a pilot valve coupled to a solenoid, and a regulator. The pilot valve and regulator are connected through hoses to the sprinkler body. When the solenoid fails it can be easily replaced by opening the lid of the valve actuator component assembly housing and pulling out the solenoid, without having to excavate and remove the sprinkler.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of repairing a valve in a head sprinkler without excavating the sprinkler, comprising the steps of:providing a hollow body with an inlet and a valve for controlling the entry of water into the body through the inlet;providing the body with a riser vertically re

[ What is claimed is:] [1.]1. A method of repairing a valve in a head sprinkler without excavating the sprinkler, comprising the steps of:providing a hollow body with an inlet and a valve for controlling the entry of water into the body through the inlet;providing the body with a riser vertically reciprocable within the body and including a nozzle at an upper end thereof for distributing water over an area to be watered;providing the body with a circular ground support flange at its upper end including an aperture for allowing the riser to extend and retract therethrough and an opening that leads to a valve actuator component assembly housing connected to the body;installing a valve actuator component assembly inside the housing and operatively connecting the assembly to the valve for turning the valve ON and OFF;sealing an open upper end of the valve actuator component assembly housing with an openable lid;connecting the inlet to a sub-surface water supply line;burying the body in a bed of soil so that the ground support flange is substantially located at a level of a surface of the bed; andopening the lid, disconnecting the assembly, and removing the assembly from the valve actuator component assembly housing through the opening in the ground support flange to enable repair or replacement of the assembly.