Discharge rate and pressure control solenoid valve

A flow and pressure control valve comprising:

• a valve body having a bore, and a flow valve inlet and outlet communicable with the bore;
• a flow valve disposed in the bore of the valve body to control communication between the flow valve inlet and the flow valve outlet of the valve body;
• a pressure valve inlet communicable with the flow valve inlet in the bore of the valve body;
• a pressure valve to control communication between the pressure valve inlet and the flow valve inlet of the valve body;
• a biasing member between the flow valve and the pressure valve tending to force the pressure valve to close the pressure valve inlet;
• and
• a force exerting portion operable to force the flow valve to move and to increase the force applied to the pressure valve by the biasing member, but not operable to move the flow valve to such an extent that the flow valve inlet is communicated to the flow valve outlet until the force applied to the pressure valve by the biasing member is sufficient to keep the pressure valve closed when pressure at the pressure valve inlet has reached an operating pressure.

A discharge rate and pressure control valve comprising:

• a valve body having an inner bore generally defined by a bore axis, a valve inlet, and a valve outlet;
• a spool member at least partially interposed within the inner bore and moveable therein generally along the bore axis;
• a biasing member for biasing the spool member within the inner bore;
• a force exerting portion for axially moving the spool member within the inner bore;
• and
• a flap device including a flap inlet defined by an inlet flap outer conduit and an inlet flap inner conduit,
• wherein the biasing member, in a first valve configuration, permits the flap device to open when pressure within the inlet flap outer conduit reaches a first pressure, and the biasing member, in a second valve configuration, prevents the flap device from opening when pressure within the inlet flap outer conduit reaches a second pressure,
• wherein the spool member, in a third valve configuration, directs the flow of a fluid from the valve inlet to the valve outlet when a bias force imposed by the biasing member is sufficient to prevent the flap device from opening after pressure within the inlet flap outer conduit has reached an operating pressure;
• wherein the inlet flap inner conduit is in fluid communication with the valve inlet within the inner bore of the valve body.

A discharge rate and pressure control valve comprising:

• a valve body having an inner bore generally defined by a bore axis, a valve inlet, and a valve outlet;
• a spool member at least partially interposed within the inner bore and moveable therein generally along the bore axis;
• a biasing member for biasing the spool member within the inner bore;
• a force exerting portion for axially moving the spool member within the inner bore;
• and
• a flap device including a flap inlet defined by an inlet flap outer conduit and an inlet flap inner conduit wherein the inlet flap inner conduit is in fluid communication with the valve inlet within the inner bore of the valve body,
• wherein the biasing member, in a first valve configuration, permits the flap device to open to communicate the inlet flap outer conduit with the valve inlet when pressure within the inlet flap outer conduit reaches a first pressure, and prevents the flap device from opening until pressure within the inlet flap outer conduit reaches the first pressure, and the biasing member, in a second valve configuration, prevents the flap device from opening when pressure within the inlet flap outer conduit reaches a second pressure,
• wherein the spool member, in a third valve configuration, directs the flow of a fluid from the valve inlet to the valve outlet when a bias force imposed by the biasing member is sufficient to prevent the flap device from opening after pressure within the inlet flap outer conduit has reached an operating pressure.

A delivery system for a fluid which may be used to attain a desired pressure and discharge rate of the fluid, the system comprising:

• a control valve having:
• a valve body having an inner bore generally defined by a bore axis, a valve inlet, and a valve outlet;
• a spool member at least partially interposed within the inner bore and moveable therein generally along the bore axis;
• a biasing member for biasing the spool member within the inner bore;
• a force exerting portion for axially moving the spool member within the inner bore;
• and
• a flap device including a flap inlet defined by an inlet flap outer conduit and an inlet flap inner conduit wherein the inlet flap inner conduit is in fluid communication with the valve inlet within the inner bore of the valve body,
• wherein the biasing member, in a first valve configuration, permits the flap device to open to communicate the inlet flap outer conduit with the valve inlet when pressure within the inlet flap outer conduit reaches a first pressure, and prevents the flap device from opening until pressure within the inlet flap outer conduit reaches the first pressure, and the biasing member, in a second valve configuration, prevents the flap device from opening when pressure within the inlet flap outer conduit reaches a second pressure,
• wherein the spool member, in a third valve configuration, directs the flow of a fluid from the valve inlet to the valve outlet when a bias force imposed by the biasing member is sufficient to prevent the flap device from opening after pressure within the inlet flap outer conduit has reached an operating pressure;
• and
• a fluid pump having a pump inlet and a pump outlet, wherein the pump inlet is in fluid communication with the valve outlet.

A discharge rate and pressure control valve comprising:

• a valve body having an inner bore generally defined by a bore axis, a valve inlet, and a valve outlet;
• a spool member at least partially interposed within the inner bore and moveable therein generally along the bore axis;
• a biasing member for biasing the spool member within the inner bore;
• a force exerting portion for axially moving the spool member within the inner bore;
• and
• a flap device including a flap inlet defined by an inlet flap outer conduit and an inlet flap inner conduit,
• wherein the biasing member, in a first valve configuration, permits the flap device to open when pressure within the inlet flap outer conduit reaches a first pressure, and the biasing member, in a second valve configuration, prevents the flap device from opening when pressure within the inlet flap outer conduit reaches a second pressure,
• wherein the spool member, in a third valve configuration, directs the flow of a fluid from the valve inlet to the valve outlet when a bias force imposed by the biasing member is sufficient to prevent the flap device from opening after pressure within the inlet flap outer conduit has reached an operating pressure;
• wherein the inlet flap inner conduit is in fluid communication with the valve inlet within the inner bore of the valve body;
• wherein the flap device includes a seat surrounding a flap orifice that defines a boundary between the inlet flap outer conduit and the inlet flap inner conduit, and a ball that selectively contacts the seat to prevent the movement of fluids through the seat;
• wherein the flap device further includes a sleeve at least partially interposed between the biasing member and the ball, wherein the sleeve includes a ball contacting portion and a cylindrical housing having a diameter that narrows inwards to fix an end of the biasing member to the sleeve.