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Orifice Meters

April 5, 2018

Controlling continuous boiler blowdown flow rate using heavy duty control valves: Madden’s Orifice Meter

The two main ways to control surface blowdown in boilers are by conductivity sensors and manual valves. Conductivity sensors work by measuring the conductivity of the boiler water and then automatically blowing down dirty surface water for a set amount of time until it reaches the operator’s desired conductivity.

Orifice Meter

Manual valves work on a percentage principal. Boiler operators look at water quality and other operating conditions to come up with a percentage of surface water to continuously blowdown. This percentage is based on the boiler’s average steam production. The blowdown percent range needed can vary greatly depending on the boiler room conditions and the water available for boiling.

[Read more…] about Controlling continuous boiler blowdown flow rate using heavy duty control valves: Madden’s Orifice Meter

Blog,  Orifice Meters

May 10, 2017

How Madden builds one of the most durable boiler blowdown valves on the market (VIDEO)

The Madden Orifice Meter is designed to give the operator precise and consistent control of the continuous blowdown flow rate. These boiler blowdown valves are designed to be dependable for years of service life in the boiler room. Madden Orifice Meters consist of two different models, a 250 PSI design and a 650 PSI design.

Other than the body castings and the bolts used to connect the upper and lower portion of these vessels, everything going in to an OM250 or an OM650 is the exact same part. Madden offers 4 different orifice plate sizes to cover a wide range of applications. Within these orifice plates are 17 different hole sizes giving the precise control of the boiler’s continuous surface blowdown. The actual flow rate through each orifice on the plate will very depending on the boiler’s operating pressure. See our OM_datasheet_2016 pages 3 and 4 for expected flow rates in a Madden Orifice Meter per plate size and boiler operating pressure.

[Read more…] about How Madden builds one of the most durable boiler blowdown valves on the market (VIDEO)

Blog,  Orifice Meters

January 6, 2017

How a Madden Orifice Meter can help save money on a boiler’s continuous blowdown application

There are many pretreatment options for boiler feed water to help ensure clean and efficient boiling in your application. However, even with the best pretreatment, impurities in your boiler water can still occur via suspended and dissolved solids forming. Suspended and dissolved solids can carry out of the boiler with the steam causing damage to piping and even other in-line process equipment. And if that isn’t enough, suspended solids can form sludge inside of your boiler greatly affecting boiler efficiency and heat transfer.

[Read more…] about How a Madden Orifice Meter can help save money on a boiler’s continuous blowdown application

Blog,  Orifice Meters

August 19, 2014

Sizing an Orifice Meter Blowdown Flow Control

Overview

There are many different manufacturers of devices used to control the continuous blow down from an industrial boiler from simple needle valves to sophisticated electronic systems.   The Madden Orifice Meter is unique in design.  It has been in production for over 60 years and has proved to be a simple, reliable blow down flow control for continuous boiler blow down.  How do you select the correct model for your boiler installation?…

[Read more…] about Sizing an Orifice Meter Blowdown Flow Control

Blog,  Orifice Meters

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