ball valve
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
computer science crazy
Super Moderator
******

Posts: 3,048
Joined: Dec 2008
#1
20-09-2008, 10:27 PM


A ball valve (like the butterfly valve, one of a family of valves called quarter turn valves) is a valve that opens by turning a handle attached to a ball inside the valve. The ball has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur. When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked. The handle position lets you 'see' the valve's position.

Ball valves are durable and usually work to achieve perfect shutoff even after years of disuse. They are therefore an excellent choice for shutoff applications (and are often preferred to globe valves and gate valves for this purpose). They do not offer the fine control that may be necessary in throttling applications but are sometimes used for this purpose.

The body of ball valves may be made of metal, ceramic, or plastic. The ball may be chrome plated to make it more durable.

There are three general types of ball valves: full port, standard port, and reduced port.
A full port ball valve has an oversized ball so that the hole in the ball is the same size as the pipeline resulting in lower friction loss. Flow is unrestricted, but the valve is larger.
A standard port ball valve is usually less expensive, but has a smaller ball and a correspondingly smaller port. Flow through this valve is one pipe size smaller than the valve's pipe size resulting in slightly restricted flow.
In reduced port ball valves, flow through the valve is two pipe sizes smaller than the valve's pipe size resulting in restricted flow.
A trunnion ball valve has a mechanical means of anchoring the ball at the top and the bottom
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  ball piston engine wikipedia jaseelati 0 381 10-02-2015, 01:17 PM
Last Post: jaseelati
  gate valve computer science crazy 6 10,595 30-09-2013, 12:06 PM
Last Post: Guest
  VALVE TIMING DIAGRAM OF FOUR STROKE ENGINES PPT study tips 2 1,280 08-07-2013, 09:47 AM
Last Post: study tips
  Variable Valve Timing PPT study tips 0 489 18-04-2013, 02:40 PM
Last Post: study tips
  VTEC ( Variable valve Timing and lift Electronic Control) Computer Science Clay 2 3,766 12-04-2013, 02:49 PM
Last Post: study tips
  HIGH PRESSURE DROP CONTROL VALVE 56 study tips 0 532 06-03-2013, 02:13 PM
Last Post: study tips
  CAMLESS ENGINE WITH ELECTROMECHANICAL VALVE ACTUATOR pdf project girl 0 1,051 06-02-2013, 02:50 PM
Last Post: project girl
  A New Electro-Hydraulic Variable Valve-Train System for I.C Engine pdf project girl 0 698 04-02-2013, 10:18 AM
Last Post: project girl
  Multi Valve Engine computer science crazy 12 15,575 28-01-2013, 02:17 PM
Last Post: seminar tips
  VALVE TIMING DIAGRAM OF FOUR STROKE ENGINES pdf project girl 0 1,090 16-01-2013, 10:43 AM
Last Post: project girl