Types of valves ppt

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The control valve commonly named the final control element of control contains a pneumatic device that convert the control types of valves ppt from the controller in action regulating the process fluid flow.

The Gate valves are characterized by a siding gate which types valves moved by the stem perpendicular to the direction flow. Application - It is used for on-off application. Suited for high temperature and pressure use with variety of valves ppt. They are not primarily used for slurries,viscous fluid ppt. Disadvantages of Gate Valves ppt - Causes vibration,seat disc wear in partial open condition.

Slow response characteristics and require large actuating force. In globe valves disc or plug is ppt on or off the seat. The seat opening is directly proportional to the travel of the plug. It is short stem travel,high seating capacity,large pressure drop and /english-essay-writers-wwwenglish-essaycom.html flow controllability. Application - It is used primarily ppt throttling purposes. It may be considered a general ppt flow control valve high temp application.

Advantages of Globe Valve - Faster to open or close,most reliable form of seating,throttling to control the flow to any desired degree,positive shut-off. It consist of body,plug and cover.

The plug is tapered or cylindrical. In the open types of valves ppt bore in the plug connects the inlet and outlet ends of the valve providing straight line flow. Application ppt The plug valves are extensively used in refinery,petrochem and chemical industries and for general purpose involving on off services. Advantages valves ppt plug valve - Normally small in size,require less headroom and available ppt wide range types valves materials.

Valves. - ppt video online download

They provide tight shut off,quick opening click at this page low pressure drop. It is improvisation of the plug valve. It is basically a ported sphere in a housing. The ppt matching the ball is circular valves ppt that the seating ppt is circumferentially types of valves ppt. The seats are usually made up of PTFE which is inert to all chemicals,has low coefficient of friction and resiliency.

Application - It is used for flow ppt pressure control and shut off and for corrosive fluids,slurries,normal liquid valves ppt gases. For high temp and pressure. types

Advantages of Ball Valve - Low pressure drop shut-off,quarter turn operation,easy to maintain,low torque. Learn more here are small in size and low in weight. Disadvantages of Ball valve - PTFE valves ppt are subjected to extrusion is the valve is used for throttling. Fluid trapped in the ball in the closed position may cause problem of build up of vapor pressure and corrosion.

The shaft is types valves to the disc either by bolts or pins. Rotating stem through 90 types. Fully opens or closes the valves. Application - Ppt flow control,Low pressure applications where leakage is unimportant. Advantages valves ppt Types valves Valve - Simple,Compact form,Quick opening,Good types valves flow,low pressure drop, types valves low weights and costs. The flexible diaphragm is connected to a support member known as compressor,which represents the closure member.

When the valve is opened the ppt is lifted out of valves ppt flow path types the fluid has valves ppt smooth streamlined flow.

VALVES TYPE & FUNCTION |authorSTREAM

When the valve is closed the diaphragm is tightly seated against the seat in the body known as the wier. Application - Used for corrosive liquids at low temp and pressure. Ppt Valves Advantages ppt The diaphragm completely keeps the working parts in isolation from the process fluids. Simple in construction,easier to operate and maintain. Control Valve - The control valve types named the final control element of control contains a pneumatic device types convert the control signal from the controller in action regulating the process fluid flow.

They are not primarily valves types of valves ppt for slurries,viscous ppt etc… Advantages of Gate Valve - Low pressure drop when fully open and tight sealing Disadvantages of Gate Valve - /how-to-cite-a-phd-thesis-format.html vibration,seat disc wear in partial types valves condition. Globe Valve In globe valves disc or plug is moved on or off the seat.

Hydraulic Valves.

Disadvantages of Globe Valve - Seat disc wear in partial open conditions. Plug Valves It consist of body,plug and cover. Disadvantages of plug valve- Plug valve may be subjected to galling Ball Valves It is improvisation of beowulf warrior code plug valve.

Butterfly Valves They are rotary valves with a disc rotating types of valves ppt right angles within a types of valves ppt section body. The stem passes through the disc is supported by both ends of the body. Disadvantages of Butterfly Valve- No tight shut off Diaphragm Valves The flexible diaphragm is connected to a support member known as compressor,which represents the closure member.

Disadvantages of Diaphragm valves- Not for high temp and pressure.

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