Answer / aftab ahmed mazari

Control Valve size means, size of control valve body.
In a simple way, you may understand the size of control valve connections like 4" X 3". This 4" is inlet and 3" is outlet of control valve.
aftabmazari@yahoo.com

Answer / faiyaz

Control valve size means its called a class 150 class 300 class 600 class 900 class 1500
means flow of fluids like water will flow class 150 liquid will flow class 300 and gas will flow class 600 its types of flow of fluids this is the meaning of size of valve

Explain the functions of the CPU of a PLC.

1 Answers  

---

Why are the uses 24vdc in industries

0 Answers  

---

What should be hight of CONTROL panel for access & OPERATION What is BIS & INDIAN STD for SAME?

3 Answers  

---

difference between DCS @ SCADA system? and how can use in field

5 Answers   Marafiq,

---

How to calibrate and check thermal mass flow meter of Make thermal instrument company inc model 60?

1 Answers   Wood Group,

---

---

Close loop and open loop diagram for instrumentation

1 Answers   Petron ltd,

---

what is the difference between auto tuning and manual tuning of controllers(eg:PID,PI,PD CONTROLLERS )

2 Answers   GATE,

---

What is the relationship between GAIN and PROPORTIONAL BAND.

1 Answers   Kharafi National, Sabic,

---

Square root calculation for dp flow transmitter?

0 Answers  

---

can i use capillary type dp transmitter converted to capillary type pressure transmitter. if i removed one side capillary tube its work correctly?

1 Answers  

---

Why we are using temperature and pressure as a reference when measuring flow of steam?

4 Answers   Shell,

---

What are the two states of a controller

3 Answers  

---