Why we use air valves, Civil Engineering

Assignment Help:

Q. Why we use Air Valves?

Air Valves - Air valves of proper size and pressure rating at summits. Air valves ensure the safety of the pipe line against collapse when at points of low pressure. When it is placed below the gate valve, it protects the pipe against the negative which may develop because when the gate valve is suddenly closed, water continues to flow and vacuum gets created on the down stream side of gate valve. Air valve opens out automatically when the pressure falls below the limit.


Related Discussions:- Why we use air valves

Show method of greasing, Method of Greasing : Greasing of fixed end require...

Method of Greasing : Greasing of fixed end requires 20 to 25 minutes. The lifting is hardly 10 mm, ensuring that the gap is created between saddle block and knuckle pin. Saddle is

How can rock sockets take up loads, Question How can rock sockets take ...

Question How can rock sockets take up loads? Answer Load transfer mechanism is brief as follows- While a socketed basis is loaded, conflict is provided by together

Self compacting concrete, what will be the w/c ration and cement/fly ash ra...

what will be the w/c ration and cement/fly ash ration for the particular mix design

Types of stone masonary, random rubble coursed, suare rubble coursed and un...

random rubble coursed, suare rubble coursed and uncoursed, polygonal walling, flint walling

Compute the safe bearing capacity of a square footing, Compute the safe bea...

Compute the safe bearing capacity of a square footing 1.5 m × 1.5 m, located at a depth of 1 m below the ground level in a soil of average density 20 kN/m 3 .   = 20°, N c = 17.7,

Steel, A No 10 steel rebar is tested in tension by monitoring the load read...

A No 10 steel rebar is tested in tension by monitoring the load reading of the testing machine it was found that the specimen yielded at aload of 41600lb and fractured at 48300 lb

Plane table surveing, in plane table surveying which activity is done first...

in plane table surveying which activity is done first whether centering or levelling?

Deck that you can park a car under, I wish to build a deck that is 4.7m wid...

I wish to build a deck that is 4.7m wide and 7m long alongside my house. I need to park a car under it so there can be no supports in the middle. Attached to the wall on one side a

Matrices, How to invert a matrix

How to invert a matrix

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd