Abstract: A pipeline vent valve comprising a body (11) defining a chamber of clerestory configuration in which the upper portion (B) of the chamber is of reduced cross-sectional area, the chamber having an inlet (13) towards its lower end which is adapted to be connected to a pipeline and an outlet (15) in the upper portion, a valve body (23) supported in the upper portion of the chamber to be movable between a first position at which it is in sealing engagement with the outlet and a second position at which it is out of sealing engagement with the valve seat, said valve body being responsive to the level of liquid in the chamber in the chamber and being adapted to close on the liquid level in the chamber exceeding a predetermined level, said valve body having central passage (37) providing communication to each side of the valve body, a float member (21) supported within the chamber and adapted to cause said movement of said valve body between the first and second position as a result of the presence of liquid in the

Abstract: A valve comprising a body having an inlet (13, 113, 213) adapted to be connected to a pressurized source of liquid and an outlet (15, 115, 215) which is to communicate with a reservoir, a valve seat (25, 125, 225) between the inlet and outlet, a valve member (27, 127, 227) movable relative to the valve seat between an open and closed position, the valve member having a first face (29,129, 229) which is movable to be in opposed relation to the valve seat and to be engaged with the valve seat when the valve is in the closed position, the valve member having a second face (31, 131, 231) located in opposed relation to the first face, a chamber (33, 133, 233) located between the body and the second face, a first passageway (35, 135, 235) providing communication between the first face and the chamber, the chamber having a discharge outlet (51, 151, 251), a control means (43, 45, 143, 145, 243, 245) associated with the discharge outlet, the control means being controlled by a bearing member (17, 117, 217) adapted to

Abstract: A pipeline vent valve comprising a body (13) defining a chamber (A) having an inlet (17) towards its lower end which is adapted to be connected to a pipeline and an outlet (21) towards its upper end, the outlet defined by a valve seat, a first valve member (23) supported in the chamber to be moveable between a first position at which it is in sealing engagement with the valve seat and a second position at which it is out of engagement with the valve seat, the first valve member in its movement to the first position being responsive to the magnitude of the gaseous flow rate through the valve seat to be moveable to the first position on the gaseous flow rate exceeding a desired level, the first valve member also being responsive to the level of liquid in the chamber and being adapted to close when the liquid level in the chamber exceeds a predetermined level, the first valve member having in opening providing communication to each side of the first valve member, a second valve member fixed to the first valve me

Abstract: A valve comprising a body having an inlet (13, 113, 213) adapted to be connected to a pressurized source of liquid and an outlet (15, 115, 215) which is to communicate with a reservoir, a valve seat (25, 125, 225) between the inlet and outlet, a valve member (27, 127, 227) movable relative to the valve seat between an open and closed position, the valve member having a first face (29,129, 229) which is movable to be in opposed relation to the valve seat and to be engaged with the valve seat when the valve is in the closed position, the valve member having a second face (31, 131, 231) located in opposed relation to the first face, a chamber (33, 133, 233) located between the body and the second face, a first passageway (35, 135, 235) providing communication between the first face and the chamber, the chamber having a discharge outlet (51, 151, 251), a control means (43, 45, 143, 145, 243, 245) associated with the discharge outlet, the control means being controlled by a bearing member (17, 117, 217) adapted to