Pressure reducing valve with shut-off mechanism
AssigneeNetafim, Ltd.
InventorsBar Gazit, Gad Peleg
Life of this patent
Estimating the term…
Abstract
A pressure regulator valve for regulating pressures within a portion of an irrigation system, can also be used to shut off downstream flow into the portion of the irrigation system in response to an incoming command arriving via an incoming port into the regulator.
Claims26
A flow regulating irrigation valve (12) having a longitudinal axis (A) defining an upstream side (U) and a downstream side (D), the valve comprising:
- a valve housing (38) extending along the longitudinal axis (A) and comprising:
- an inlet cap (40) located at the upstream side (U) and an outlet cap (44) located at the downstream side (D), the inlet cap (40) and the outlet cap (44) being arranged along the longitudinal axis (A) at opposite ends of the valve housing (38),
- a valve inlet (42) formed in the inlet cap (40) at the upstream side (U),
- a valve outlet (46) formed in the outlet cap (44) at the downstream side (D), and
- a valve command port (20) configured to receive an incoming command;
- a flow stem (22) mounted in the housing (38) along the longitudinal axis (A), the flow stem (22) having an upstream entry (23) and a downstream exit (25) proximate the valve outlet 46;
- and
- a movable plug (30) mounted in the housing along the longitudinal axis (A) mounted upstream of the flow stem (22) and configured to shut off liquid flow through the flow stem (22) by moving towards the downstream side and sealing the upstream entry (23) of the flow stem (22), in response to an incoming command received at the valve command port (20).
A flow regulating irrigation valve (12) having a longitudinal axis (A), an upstream side (U) and a downstream side (D), the valve comprising:
- a flow stem (22) having an upstream entry (23) and a downstream exit (25), the flow stem (22) configured to regulate pressures within a portion of an irrigation system to which the valve is connected;
- a valve command port (20) configured to receive a command signal, the valve command port (20) having a command port axis (C) which is transverse to the longitudinal axis (A);
- and
- a movable plug (30) located upstream of the flow stem (22), the plug (30) configured to shut off liquid flow through the valve (12) by moving towards the downstream side in a direction transverse to the command port axis (C) and sealing the upstream entry (23) of the flow stem (22), in response to an incoming command received at the valve command port (20).
A flow regulating irrigation valve having a longitudinal axis (A), the longitudinal axis (A) defining an upstream side and a downstream side, the valve comprising:
- a pressure regulating mechanism for regulating pressures within a portion of an irrigation system to which the valve is connected;
- and
- a shut-off mechanism located upstream of the pressure regulating mechanism and configured to override the pressure regulating mechanism, and shut-off liquid flow through the valve, wherein:
- in response to an incoming pressure command received at a valve command port (20) having a command port axis (C) transverse to the longitudinal axis (A), at least a portion of the shut-off mechanism is configured to move towards the downstream side in a direction transverse to the command port axis (C), to shut-off liquid flow.
Dependencies are inferred from the claim text.