👉 " Three Times Better (Engineer) "

The 3 Things You will learn are as follows.

👉 One Engineering Question

👉 One Engineering Standard

👉 One Career Tip from Top Professionals

#1 -Engineering Question

👉 "Hi Asad,
​
When I receive a control valve sizing sheet from any vendor, what are the major points I need to check in it?"

Answer:

Amazing Question (👍)

Control valve sizing is not a manual process.

It requires a lot of brains.

We need to evaluate various scenarios.

Accordingly select the most optimal solutions.

That having been said.

Here is a quick overview of points that “must” be checked in any CV sizing sheet.

👉 Point 1: CV between 20% to 80%

The calculated CV of the valve must be within 20 to 80% of the rated CV.

(PS: Why this limit of 20 to 80%: Learn here)

👉 Point 2: Cavitation / Flashing

Is there cavitation present? If yes, then what solution has the vendor taken to mitigate it?

(PS: There are more than 10 ways to solve cavitation in control valves: Learn here)
​

👉 Point 3: Valve Noise

Is the noise within the valve in acceptable limits?

Generally, 85dBA is considered acceptable.

If no, then what solution has the vendor taken to mitigate it?

(PS: There are around 5 ways to solve noise issues in control valves: Learn here)

👉 Point 4: Valve Outlet Velocity

Is the valve outlet velocity within acceptable limits?

Valve outlet velocity is the fluid velocity at the discharge flange of a control valve.

Let's take reference from PIP International Standard (Complete Std Name: PCCCV001 Section 4.7.2).

The outlet velocity shall not be greater than the following:

a. 0.3 Mach for gas, vapor, and steam services

b. 0.4 Mach for infrequent services

c. 33 ft/sec for liquid services other than water

d. 18 ft/sec for water service

e. 20 ft/sec for erosive fluid (erosive particles)
​

If you are interested in a Complete Control Valve Sizing Course with Software, then reply "Interested"

And If enough people are interested then we can think about make a organized course on the topic. 😊

#2- Engineering Standard

Since we discussed Control Valve Sizing let us explore the Standards for Cavitation in Control Valve.

​
(🔴) ISA 75.23: Cavitation is one of the most common causes of control valve failure.

But did you know, not all cavitation is the same?

Cavitation is further divided into various sub-categories based on the damage it can cause.

That is where ISA 75.23 introduced the concept of the “Cavitation Index.”

The Cavitation Index helps to understand the degree to which cavitation is occurring.

It has the following states:

a) Incipient cavitation

b) Constant cavitation

c) Incipient damage

d) Choking cavitation

e) Maximum vibration cavitation

Here's a practical example using Flowserve Valve as an Example.

#3 -Career Tip

I once had to create 3,000 datasheets for a project.

I thought I was procrastinating because of a lack of self-control.

But then I realized it was the sheer size of the task that was freaking me out!

So, I broke it down into chunks of 500 datasheets.

Suddenly, it felt manageable, and before I knew it, I had completed all 3,000!

Breaking big tasks into smaller ones really helps keep procrastination at bay.

Give it a try! 😊

I would love to get your valuable feedback (just reply back)

✨Need Your Feedback (GIFT)

Happy News: Our little YouTube channel will be completing 1 million Views in a few months.

I know there are entertainment videos getting a Million plus views on just 1 Video. (Just so I don't feel super great)

But regardless I am happy my work has helped so many people.

All Thanks to You!! 😵

You are the reason I am able to celebrate.

As a Gift to all I am planning to make a

"Free Resource"

These are some of the options.

Tell me which one should I create? (reply your fav)

👉 Crash Course on Engineering Standards

👉 E-Book on Engineering Standards

👉 Control Valve Sizing Course

👉 E-Book Specifically (In-Depth) on Control Valve Standards

Or any Other resource you might find valuable.

✨Free Stuff

​Instrumentation Professional's Crash Course (1500+ Students)

​Control Valve Mastery E-Book (Year 2024)

​PIP Instrumentation Standards (Year 2021)

​Diaphragm Seal E-Book (Year 2020)

✨Previous Newsletter Questions

​For All Steam services "Condensate pot" is required? (Ans: No)​

​What is "Dynamic Vapor Compensation in RADAR ?​

​What is CDTP in Relief Valve?​

✨Coming up next week

Question: "Why Orifice Meters have a Beta ratio limit of 0.3 to 0.8? Is this true and what are the solutions?"

You can submit your question as well by replying to this email

Until next week,

Happy Learning and Keep Smiling.

Asad Shaikh

Your Well Wisher and Instrumentation Friend!! 😊

See you next week!