Share optimized solutions, professional valve knowledge and industry news

Why each control valve’s sizing is so important?

Each control valve needs to be carefully calculated and selected before ordering to ensure that all process parameters can be met. Today we will talk about why calculation is so important for control valves.
Table of Contents
    Add a header to begin generating the table of contents

    We know all control valves should be sizing and selected before ordering, to make sure it meets our condition.

    Control Valve Sizing
    Control Valve Sizing


    Because if oversizing the control valves will hurt the process variability in two ways. First, the oversized valve cost too much, and the flow capacity range is wide. It makes less flexibility in adjusting the controller, especially controlling the valve opening around 25% travel. And this will create a risk of increased process variability. Secondly, the oversized control valves hurt process variability because an oversized valve is caused to operate more frequently at lower valve travel. Lower valve opening makes seal friction greater, particularly in rotary valves. Because oversized control valves supply a disproportionately large flow change for a given increment of valve travel, this phenomenon greatly exaggerates the process variability associated with friction-induced dead zones.

    Class Ii Cavitation Cage
    Class Ii Cavitation Cage


    Regardless of its actual inherent flow characteristic of the control valve, an oversized control valve act more likely as a quick-opening valve, which results in high installed process gain in the lower lift regions.
    Meanwhile, when the control valve is oversized, the valve tends to reach system capacity at relatively low travel, making the flow curve flatten out at higher valve travels. For valve travel over about 50%, the valve has become completely ineffective for control purposes because the process gain is close to zero and the valve travel has to vary greatly with little change.
    So it is very important to consider the valve type, inherent characteristic, valve size when we are on selecting a control valve.
    In this way, no matter from the economic point of view, the process management accuracy can reach the maximum benefit.

    Plug Design For Micro Flow
    Plug Design For Micro Flow

    Contact Us

    With expertise in valves and rich experience in the oil&gas, chemical industry, textile mills, power plants, and sugar mills. THINKTANK has become the premier manufacturer of next-generation precision control valves.

    With a customer base that includes over 42 of the world’s leading engineering&contractors and international valve brands, THINKTANK Valves offers cost-effective valves that help our customers achieve automated process control without paying high prices.

    Facebook
    Twitter
    LinkedIn
    Pinterest
    Print
    top control valve manfuacturers

    Top 10 Control Valves Companies in Indonesia

    Looking for the best control valves companies in Indonesia? Look no further than our top 10 list. THINKTANK work for Indonesian Valve Solutions, we offer a comprehensive range of control valves that are suitable for use in a variety of industries. We have a team of highly experienced and qualified engineers who can provide you with the perfect solution for your needs.

    Read More
    industrial valves2 1

    Top 10 Control Valves Companies in The USA

    A control valve’s function is to ensure that process systems run smoothly and well. It is estimated that the global control valve market will be worth $8.78 billion by 2025. The global market for control valves is expected to grow by around 5.5% from 2019 to 2025.

    Read More
    flowserve uk

    Top 10 Control Valves Companies in the U.K

    If you are looking for a quality Control Valves supplier in the U.K., then look no further! In this post, we will share with you the top 10 Control Valves companies in the U.K. Each of these companies is a leader in the industry and produces high-quality Control Valves that are sure to meet your needs.

    Read More
    solenoid valve in control valve

    What is SOV(solenoid valve) in Control Valve 

    Solenoid valves are often used in applications where a control valve is required to be actuated quickly to a fault position under certain conditions. It is generally designed to be in the air supply line and is an important accessory to the air control system.

    Read More
    diesel generators

    Fusible Link Valves For Diesel Generators

    The fusing link valve for the diesel generator set includes the valve body and actuator, and the valve body and actuator are fixed by a fixed bracket/yoke. The actuator of the fused valve includes the shaft, fusible link, manual/gear operator, actuator protection cover, limit switch, etc.

    Read More
    sluice gate valve

    Sluice Gate Valve 101

    The sluice gate valves are real end-of-line valves designed to hold back water with minimal leakage in applications such as drains, sump tanks, and distribution boxes.

    Read More
    Joy Preview

    A good partner is a lasting and effective investment

    Focused on Control Valves & Self-Operated Pressure Regulators For Over 10 Years

    Grow Your Business is Our Top Priority. Contact Now You Will Get More Than You Expect.

    Joy Preview

    ASK FOR QUOTE

    Just leave your name, email, and simple message or requirements, We will contact you within 1 hour.

    WhatsApp: +86 185 1656 9221

    Skype ID: sowell85

    Wechat ID: +86 189 5813 8289