gate valve

A gate valve is a valve that opens by lifting a round or rectangular gate out of the path of the fluid. The distinct feature of a gate valve is the sealing surfaces between the gate and seats are planar. The gate faces can form a wedge shape or they can be parallel. Gate valves are sometimes used for regulating flow, but many are not suited for that purpose, having been designed to be fully opened or closed. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low friction loss.

Gate valves are characterised as having either a rising or a nonrising stem. Rising stems provide a visual indication of valve position. Nonrising stems are used where vertical space is limited or underground.

Bonnets provide leakproof closure for the valve body. Gate valves may have a screw-in, union, or bolted bonnet. Screw-in bonnet is the simplest, offering a durable, pressure-tight seal. Union bonnet is suitable for applications requiring frequent inspection and cleaning. It also gives the body added strength. Bolted bonnet is used for larger valves and higher pressure applications.

Another type of bonnet construction in a gate valve is pressure seal bonnet. This construction is adopted for valves for high pressure service, typically in excess of 2250 psi. The unique feature about the pressure seal bonnet is that the body - bonnet joints seals improves as the internal pressure in the valve increases, compared to other constructions where the increase in internal pressure tends to create leaks in the body-bonnet joint

Important Note..!

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


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
Popular Searches: daiagram of gate protection, ball valve houston, ex or gate, gate valve box, gate valve lng ppt pdf doc, valve anti cheat, ball valve autocad,

Quick Reply
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
  Multi Valve Engine computer science crazy 12 17,632 27-04-2013, 10:03 AM
Last Post: computer topic
  Camless engine with elctromechanical valve actuator computer science crazy 1 3,007 25-01-2013, 11:16 AM
Last Post: seminar details
  VTEC ( Variable valve Timing and lift Electronic Control) Computer Science Clay 3 4,607 04-12-2012, 12:49 PM
Last Post: seminar details
  variable valve timing full report project report tiger 6 10,110 05-03-2012, 02:43 PM
Last Post: seminar paper
  VVT-i, or Variable Valve Timing with intelligence Computer Science Clay 7 7,505 14-02-2012, 03:35 PM
Last Post: seminar paper
  Wireless Id card used to Control the Sliding Gate seminar class 0 1,587 31-03-2011, 04:18 PM
Last Post: seminar class
  Variable Valve Timing In I.C. Engines computer science crazy 6 12,990 09-01-2011, 10:07 AM
Last Post: summer project pal
  ANALYSIS OF FLOW THROUGH BALL VALVE full report project report tiger 0 1,138 17-02-2010, 06:53 AM
Last Post: project report tiger
  Camless engine with elctromechanical valve actuator mechanical wiki 0 1,936 03-09-2009, 10:54 PM
Last Post: mechanical wiki
  Butterfly valve computer science crazy 0 1,814 07-04-2009, 10:27 PM
Last Post: computer science crazy

Forum Jump: