Industrial Hydraulics and Pneumatics (22655)
- What is the function of valves?
Answer:
–
- Isolation.
- Regulation.
- Non-Return.
- Special purpose.
- How the valves are classified
based on their function?
Answer:-
A.
Isolation.
- Gate valve.
- Ball valve
- Plug valve.
- Piston valve.
- Diaphragm Valve.
- Butterfly valve.
- Pinch valve.
B.
Regulation
- Globe valve.
- Needle valve.
- Butterfly valve.
- Diaphragm valve.
- Piston valve.
- Pinch valve.
C.
Non- Return
- Check valve.
D.
Special purpose
- Multi- Port valve.
- Flush Bottom valve.
- Float valve.
- Foot valve.
- Line blind valve.
- Knife Gate valve.
- How the valves are classified
based on its method of operation?
Answer:
–
Valves
are classified based on its method of operation as: –
- Self- operated valves.
- Operated valves.
- Name the Self – operated &
operated valves?
Answer:-
Mainly
the check valves are self-operated and all other valve types comes under
operated valves.
- How the valves are classified
based on end connection?
Answer:
–
Valves
are classified based on end connection as: –
- Screwed ends.
- Socket ends.
- Flanged ends.
- Butt weld ends.
- Wafer type ends.
- Buttress ends.
End
connection means arrangement of attachment of the valve with the equipment or
the piping.
- What are the types of check
valves?
Answer:
–
Check
valves are divided into two types based on check mechanism as: –
- Lift check valve.
- Swing check valve.
- What do you mean by special
purpose valves?
Answer:-
Valves
that perform duties other than the two-way isolation, control and check are
called special Purpose valves.
- What are Glandless piston valves?
Where these are used?
Answer:-
Glandless
piston valves are regulating valves used in steam services.
9. What Is
Pneumatic Conveying?
Answer
:
Pneumatic
conveying is a method of moving bulk solids from one place to another with the
help of a carrier gas. A differential pressure is applied inside a conveying
line. The flow always moves from a region of higher to lower pressure.
10. What Are The
Differences Between Pneumatics And Hydraulics?
Answer
:
- Working
fluid: Pneumatics use air, Hydraulics use Oil
- Power:
Pneumatic power less than hydraulic power
- Size: P
components are smaller than H components
- Leakage:
Leaks in hydraulics cause fluid to be sticking around the components. In
pneumatics, air is leaked into the atmosphere.
- Pneumatics
obtain power from an air compressor while hydraulics require a pump
- Air is
compressible, hydraulic oil is not
11. Where
Pneumatic System Is Used?
Answer
:
Any
system needs redundancy in work needs pneumatics, because the compressor of the
pneumatic system has periodical operations (intermittent work, not as hydraulic
pump). The compressed air could be accumulated in tanks with high pressures and
used even if the compressor failed.
Pheumatic
system is use in an application where the load is light. Because if the load is
heavy, pheumatic system should not be use & hydraulic system should be use
instead.
12. How Are The
Pneumatic System And The Hydraulic System Similar?
Answer
:
Pneumatics
use gases such as air or nitrogen, hydraulics use oil or water, both systems
use pressure to act on a specific application.
13. What Is A Pneumatic System?
Answer
:
Pneumatic
system is a system that uses air to power something. For instance, have you
seen the tube systems at bank drive-up tellers? Air is used to push the tubes
back and forth from the teller to the customer.
14. Why Would Some Industries Select
Pneumatics Over Hydraulic?
Answer
:
Actually,
there is need for air reservoir in industrial pneumatics systems. Hydraulics
can handle more powerful applications than pneumatics for the same overall
dimensions, or can be more compact for the same power.