Valve fluid control device and fluid backflow protection device comprising same
AssigneeSocla
InventorsChristian Bouilloux, Pierre Marmol, Jean Richard
Life of this patent
Estimating the term…
Abstract
A valve designed for the prevention of leakage between two or more ports when the valve is in its off position and where leakage occurs at a port seal as shown and described. In this design, each port is sealed when the valve is in the off position, and an open area vented to atmosphere is provided between each of the port seals, whereby if a seal should leak, the fluid will pass to the atmosphere by way of a vent, and will not come in contact with any other sealed port in the valve. The vented chamber separates each port seal from other port seals in the valve. The vented chamber is exterior to the valve and is not a part of the inside of the valve member such as a passage therethrough.
Claims22
Valve comprising a valve body with at least first and second ports adapted to be connected to a fluid pipe;
- a mobile valve member within the valve body, having an open position in which said first and second ports communicate via a passage in the valve member, and a closed position in which the valve member provides a closing off for each of said first and second ports;
- respective sealing areas for sealing said closing off of the first and second ports when in the closed position;
- a chamber exterior to the valve member and provided with a vent opening to free air, disposed between said sealing areas in the closed position of the valve member, whereby possible leakages at said sealing areas in the closed position are collected in said chamber, vented to atmosphere and removed from the valve through said vent;
- said valve body is a shell casing (1), said valve member (3) turns in the shell casing in which it is mounted by means of sleeves (4A, 4B) coaxial with the ports that the latter comprises, and said chamber (6) is a space between the shell casing and the valve member due to the fact that said sleeves project relative to the inside wall of the shell casing;
- and
- said shell casing (1) comprises as ports adapted to be connected to a fluid pipe said first and second ports (2A, 2B) and a third port (2C) and a port (2D) for mounting a vacuum-breaker valve, the first and the second ports being diametrally opposed on a first diameter and the third port being diametrically opposed to the port for mounting a vacuum-breaker on a diameter transverse to said first diameter, and the passage of the valve member (3) is T-shaped with a diametrical part (8) to the center of which is transversely connected a radial part (8B), the orifice of the radial part being disposed in the closed position of the valve between the port (2D) for mounting a vacuum-breaker and the second port (2B), a first orifice of the diametral part between the first port and the port for mounting a vacuum-breaker (2A, 2D) and the second orifice of the diametral part between the second and third ports (2B, 2C).
Fluid control devices adapted to be inserted between a fluid supply system and a consumption installation comprising:
- (a) a valve comprising:
- (1) a valve body with at least a first port (2A, 12A, 102A) adapted to be connected to a supply pipe (30A), and a second port (2B, 12B, 102B) adapted to be connected to an installation pipe;
- (2) a mobile valve member within the valve body, having an open position in which said first and second ports communicate via a passage in the valve member, and a closed position in which the valve member provides a closing off for each of said first and second ports;
- (3) respective sealing areas for sealing said closing off of the first and second ports when in the closed position;
- (4) a chamber exterior to the valve member and provided with a vent opening to free air, disposed between said sealing areas in the closed position of the valve member, whereby possible leakages at said sealing areas in the closed position are collected in said chamber, vented to atmosphere and removed from the valve through said vent;
- wherein said valve body also comprises a port (2D, 12D, 102D) for mounting a vacuum-breaker valve and the valve member (3, 13, 103) comprises a passage adapted in said open position of the valve to connect said port for mounting a vacuum-breaker to said first and second ports;
- and
- (b) a vacuum-breaker valve (31, 40, 41) mounted in said port for mounting a vacuum-breaker (2D, 12D, 102D), and;
- (c) a non-return valve (29A, 29B) mounted on at least one of said first and second ports, closing towards the supply and opening towards the installation.
Dependencies are inferred from the claim text.