Presentationon

“ Basics of Hydraulic and Pneumatic Direction control Valves ”

Prof. V D Sonara

Assistant Professor,Mechanical Engineering Department,

Government Engineering College, Bhuj

ByHardik N. Vora

Enrollnment Number 130150735016

Supervise by

Based on application valves are classified as follows

Direction control valve : To change the direction of the flow of fluid.

Pressure control valve : To control the pressure of the fluid in the system.

Flow control valve : To adjust the flow rate of fluid.

Types of Valve

Valves are necessary to control the pressure , flow rate and direction of the fluid.

Hydraulic valves are made from strong materials , e.g. Steel and are precision manufactured. (High Pr. Range)

Pneumatic valves are made from cheaper material , e.g. aluminum and polymer and cheaper to manufacture. (low Pr. Range)

Valve

Direction control valve

Spool Valve

Poppet Valve

Valve Control

Basic symbol

Two positions Three positions

Pneumatically operated

Hydraulically operated0

2 Way

3 Way

5 Way

4 Way

6 Way

Types of spool valve

a) 2/2

b) 3/3

c) 4/3

d) 5/3

e) 5/3

f) 4/3

g) 6/3

a b

c d

e f

g

Ball Taper Plate

Types of poppet valves

Some other types of valve

Ball ValveCheck valveButter fly valve

Ball Valve

Check Valve

Butterfly Valve

Thank You

Animation Working of direction control valve and hydraulic ram in circuit..flv