Answer Posted / satyanaraya na

Wear rings can be defined as a device used to seal the
pressure leakage of the liquid between the inlet of the
impeller and the pump casing. Wear rings are typically
found on pumps with closed impellers. A similar device that
serves the same function called a wear plate can be found
on some pumps with a semi-open impeller.
The typical reason for using a wear ring is to decrease the
amount of leakage loss around the impeller. Due to more
work available to push the pumped liquid out the discharge
there is a slight improvement in pump efficiency.

And also as name indicates 'WEAR' which is a ring can
sacrifice its size by taking friction generated between
stationary and rotating elements.
The replacement of rings is easier & cheaper than replacing
impellers/casing.
Hope this is clear.

Which instrument has all the features of try-square, bevel protractor, rule and scriber?

985

---

What are the causes of damage of diesel engine exhaust Valve?

2027

---

what is the advantages and dis advantages of critical speed of turbine.

2023

---

What is the b check value of a 4bt engine

1504

---

difference between internal energy and enthalpy?

2007

---

What is the formula for 1 HP of a two-cycle engine?

1972

---

which tests are performed in central air conditioning

1977

---

7. What are the different types of conventional and non conventional machining processes

2266

---

Are you ready to relocate with your immediate family as a new employee?

1631

---

What happened if the exhaust valve is leaking?

1800

---

my dear friends i want to know about pattern of HPCL & SAIL written exam papers. so please send me the details.

1992

---

Define a positive displacement pump?

998

---

Explain what are the thermal conductivity properties of brass?

1011

---

how we can calculate natural vibration frequency for steam turbine rotor please.

3764

---

Why will an ice cube placed in a cup of hot rotating water spin automatically faster than the water itself?

1087

---