Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
gate valve
Post: #1

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: gate valve lng ppt pdf doc, ball valve brass, pdf project report on cryogenic gate valve leakage problem, valve less micro pump, ball valve breakdown, grove ball valve b5, thermal light valve camera,

Quick Reply
Type your reply to this message here.

Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Multi Valve Engine computer science crazy 12 16,031 27-04-2013 10:03 AM
Last Post: computer topic
  Camless engine with elctromechanical valve actuator computer science crazy 1 2,218 25-01-2013 11:16 AM
Last Post: seminar details
  VTEC ( Variable valve Timing and lift Electronic Control) Computer Science Clay 3 3,683 04-12-2012 12:49 PM
Last Post: seminar details
  variable valve timing full report project report tiger 6 9,238 05-03-2012 02:43 PM
Last Post: seminar paper
  VVT-i, or Variable Valve Timing with intelligence Computer Science Clay 7 6,444 14-02-2012 03:35 PM
Last Post: seminar paper
  Wireless Id card used to Control the Sliding Gate seminar class 0 1,263 31-03-2011 04:18 PM
Last Post: seminar class
  Variable Valve Timing In I.C. Engines computer science crazy 6 11,955 09-01-2011 10:07 AM
Last Post: summer project pal
  ANALYSIS OF FLOW THROUGH BALL VALVE full report project report tiger 0 1,120 17-02-2010 06:53 AM
Last Post: project report tiger
  Camless engine with elctromechanical valve actuator mechanical wiki 0 1,463 03-09-2009 10:54 PM
Last Post: mechanical wiki
  Butterfly valve computer science crazy 0 1,265 07-04-2009 10:27 PM
Last Post: computer science crazy