Automatic leak responsive valve

A water purification system, comprising:

• a reverse osmosis system having an inlet coupleable to a water source;
• and
• an automatic shut off valve disposed between said reverse osmosis system and said water source. said automatic shutoff valve comprising:
• a valve assembly having a valve body, an inlet port, an outlet port, and a valve member movable between first and second positions, an element biasing said valve member to said second position;
• an actuator coupled to said valve, said actuator retaining said valve in said first position in opposition to force provided by said biasing element, said actuator comprising a fluid responsive member coupled to said biasing element to maintain said valve member in said first position in the absence of fluid, said fluid responsive member changing its physical condition in the presence of water such that said fluid responsive member releases said actuator such that said valve member automatically moves to said second position thereby preventing further flow of water from said water source.

A water utilization system comprising:

• a water utilization device;
• a valve disposed upstream of said water utilization device, said valve comprising:
• a valve assembly having a valve body, an inlet port, an outlet port, and a valve member movable between first and second positions, an element biasing said valve member to said first position;
• and
• a fluid responsive member coupled to said biasing element to maintain said valve member in said first position in the absence of leakage water from said utilization device, said fluid responsive member being weakened in the presence of said leakage water such that said fluid responsive member is severed thereby allowing said bias force to automatically move said valve member to said second position.

A water utilization system, comprising:

• water utilization apparatus having an input coupled to a water source;
• a valve assembly disposed between said water source and said water utilization apparatus input, said valve assembly comprising a valve movable between a first state and a second state, a bias element for exerting a first force urging said valve to said second state;
• and
• a water responsive member coupled to said valve and acting to restrain said valve in said first state in opposition to said first force, said water responsive member being responsive to water leakage from said water utilization apparatus to shear thereby allowing said bias element to move said valve from said first position to said second position.

A water utilization system, comprising:

• water utilization apparatus;
• a valve assembly having an inlet coupled to source of water, an outlet coupled to said water utilization apparatus, a valve body, a valve seat, valve member disposed within said body and movable between an open position away from said valve seat and a closed position against said valve seat, a bias element for exerting a first force urging said valve to said closed position;
• and
• a fluid responsive member coupled to said bias element and acting to restrain said valve member in said open position in opposition to said first force, said fluid responsive member separating in the presence of water leaked from said water utilization apparatus to allow said bias element to move said valve member from said open position to said closed position.