摘要:
A switch-over valve for directing a compressed air flow to either one of two drying towers (1, 2) of an air drier, the other one being vented to the atmosphere through the valve. A positively operated valve body (31) is movable between two valve seats (36) in a central chamber (32). A valve sleeve (37) arranged at either side of the valve body is axially movable in a dividing wall (38) between the central chamber and a respective outer chamber (40, 41) connected to the drying tower, is spring biased in a direction towards the valve body to a position where a radial valve sleeve flange in the outer chamber is in sealing contact with the wall, and is biased in the opposite direction by the valve body for lifting the flange from the wall and venting out the air from the outer chamber to the atmosphere through a channel (42, 43) in the wall.
摘要:
A poppet valve includes an inlet port, a first outlet port, a second outlet port, a first exhaust port, a second exhaust port, and a spindle. A first poppet element and a second poppet element each float relative to the spindle. A first piston and a second piston are fixed relative to the spindle. The spindle moves from an initial centered closed position to a first actuated position or a second actuated position to direct air flowing from the inlet port to the first outlet port or the second outlet port, respectively. The initial centered closed position is located between the first actuated position and the second actuated position. A housing contains the spindle, the first poppet element, the second poppet element, the first piston and the second piston.
摘要:
A poppet valve for controlling water flow is provided, the poppet valve includes a housing, a movable armature arranged within the housing, a pilot pin having first and second ends, and a return element associated with the pilot pin. The first end of the pilot pin is associated with and driven by the armature, and a poppet is arranged around the second end of the pilot pin. A cage is arranged around the poppet, the cage having a transverse opening adapted for water to flow therethrough. The armature is selectively actuated to drive the pilot pin in a first direction towards a closed position, in which the transverse opening of the cage is blocked by the poppet. The return element drives the pilot pin in a second direction towards an open position, in which the transverse opening of the cage is unblocked by the poppet.
摘要:
A three-port fluid control valve and a valve assembly using the fluid control valve are provided herein. The valve includes a first inlet, a second inlet, and a sealing element to selectably open one inlet to fluid communication with an outlet and to close the other inlet to fluid communication with the outlet. The valve system includes an actuator, for example a solenoid, to provide accurate and responsive control of the position of the sealing element.
摘要:
A drainage component in fluid communication with the fluid supply line includes a drain channel leading to a drain, the drain channel having an inner wall and an outer wall. The inner wall has a sealing surface approximate a three-way elastomeric valve. The elastomeric valve includes a moveable first wall having a first position when the fluid supply is on and a second position when fluid supply is off and a second wall connected to the moveable first wall, the second wall engaging a drain sealing surface when the first wall is in the first position. The elastomeric valve includes an orifice through which fluid may flow. When the pressure of the fluid on the elastomeric element increases, the second wall of the elastomeric valve engages the drain sealing surface. The elastomeric valve is preferably a fluoroelastomer to ensure both flexibility and resistance to a variety of chemical products.