Valve and a method of controlling fluid flow between a fluid supplying device and a fluid receiving device

A valve for controlling fluid flow between a fluid supplying device and a fluid receiving device, the valve having an inlet for connection to the fluid supplying device and for receiving a fluid therefrom, and an outlet,

• wherein the valve comprises a piston arrangement slidable with respect to a valve body,
• wherein the piston arrangement is slidable between a closed, first position preventing fluid from passing the valve upon exposure to a fluid pressure being below a predetermined level, and an open, second position providing fluid communication between the inlet and the outlet upon exposure to a fluid pressure exceeding the predetermined level,
• wherein the piston arrangement has a first piston area when the valve is in the closed first position, and an additional second piston area when the valve is in the open second position, wherein the valve further comprises a sealed restrictor arrangement for delaying closing of the valve to allow a fluid supply pressure to bleed off,
• wherein the valve forms part of an extensible tubing having a first tubing portion and a second tubing portion, wherein the first tubing portion comprises the valve, and wherein the outlet of the valve is configured for controlling fluid flow into an inlet of the second tubing portion,
• wherein the first tubing portion is a separate tubing portion connected to the second tubing portion, and
• wherein the first tubing portion is connected to the second tubing portion via a flexible pipe.

A valve for controlling fluid flow between a fluid supplying device and a fluid receiving device, the valve having an inlet for connection to the fluid supplying device and for receiving a fluid therefrom, and an outlet,

• wherein the valve comprises a piston arrangement slidable with respect to a valve body,
• wherein the piston arrangement is slidable between a closed, first position preventing fluid from passing the valve upon exposure to a fluid pressure being below a predetermined level, and an open, second position providing fluid communication between the inlet and the outlet upon exposure to a fluid pressure exceeding the predetermined level,
• wherein the piston arrangement has a first piston area when the valve is in the closed first position, and an additional second piston area when the valve is in the open second position, wherein the valve further comprises a sealed restrictor arrangement for delaying closing of the valve to allow a fluid supply pressure to bleed off,
• wherein the valve forms part of an extensible tubing having a first tubing portion and a second tubing portion, wherein the first tubing portion comprises the valve, and wherein the outlet of the valve is configured for controlling fluid flow into an inlet of the second tubing portion, and
• wherein the second tubing portion comprises:
• a housing having a first end portion for receiving fluid from the outlet of the valve, and a second end portion;
• a core arranged inside the housing and secured thereto;
• a pipe arranged between the housing and the core, the pipe being axially movable between a retracted position wherein a seal prevents fluid from passing between the core and the pipe, and an extended position wherein the seal does not prevent fluid from passing between the core and the pipe;
• a piston forming a part of the pipe;
• and
• a second tubing portion biasing means configured for urging the pipe towards its retracted position;
• wherein the pipe is movable towards its extended position upon exposure to a fluid flowing from the first tubing portion into the second tubing portion and providing a fluid pressure force exceeding an opposite force from the second tubing portion biasing means.