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Hand pump. Animation of a suction hand pump. On the up stroke of the piston the foot valve opens and suction brings water into the pump head. On the following down stroke of the piston the valve on the piston opens up and allows water to flow above the piston. On the successive up stroke of the piston water is pushed out of the outlet.
A check valve, non-return valve, reflux valve, retention valve, foot valve, or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. [1] Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various ...
Foot valve: a check valve on the foot of a suction line to prevent backflow; Four-way valve: was used to control the flow of steam to the cylinder of early double-acting steam engines; Freeze seal or Freeze plug: in which freezing and melting the fluid creates and removes a plug of frozen material acting as the valve
The trailer brake consists of a direct two-line system: the supply line and the separate control or service line. The supply line receives air from the prime mover park brake air tank via a park brake relay valve and the control line is regulated via the trailer-brake relay valve. The operating signals for the relay are provided by the prime ...
Master cylinder. In automotive engineering, the master cylinder is a control device that converts force (commonly from a driver's foot) into hydraulic pressure. [1] This device controls slave cylinders located at the other end of the hydraulic brake system and/or the hydraulic clutch system. As piston (s) move along the bore of the master ...
Hydraulic brake. A schematic illustrating the major components of a hydraulic disc brake system. A hydraulic brake is an arrangement of braking mechanism which uses brake fluid, typically containing glycol ethers or diethylene glycol, to transfer pressure from the controlling mechanism to the braking mechanism.
Self-priming pumps have to be capable of evacuating air from the pump suction line without any external auxiliary devices. Centrifugal pumps with an internal suction stage such as water-jet pumps or side-channel pumps are also classified as self-priming pumps. [10] Self-Priming centrifugal pumps were invented in 1935.
A poppet valve (also sometimes called mushroom valve[1]) is a valve typically used to control the timing and quantity of petrol (gas) or vapour flow into or out of an engine, but with many other applications. It consists of a hole or open-ended chamber, usually round or oval in cross-section, and a plug, usually a disk shape on the end of a ...