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HX Series Blowdown Heat Recovery Systems (2,000 – 3,500 lbs/hr capacity)

  • 6 models ranging from 2,000-3,500 lbs/hr capacity
    Madden HX series heat recovery system
    HX type Heat Recovery

  • Vertical type heat exchanger
  • ASME code welded combined flash tank and head exchanger vessel
  • 150 psi construction
  • Temperature gauge panel continuously shows performance of unit and furnishes data to calculate savings

Madden Type HX Continuous Boiler Blowdown Heat Recovery Systems feature blowdown capacities up to 3,500 lbs. per hour. These HX series heat recovery systems does not use the flash steam principle. It acts as a small vertical heat exchanger. When hot boiler blowdown enters the unit, it is cooled by passing through a copper or stainless steel tube coil while counter flowing cooling water is passing through on the shell side. The cooled blowdown is then at statute limits for safe disposal and the resulting heated up cooling water is now boiler feed water supplied to the D/A tank.


  • ASME code welded flash tank and heat exchanger vessel, 150 psi construction Section VIII, Div. 1. With National Board Serial Number and “U” stamp.
  • Self-Cleaning
  • Copper and stainless steel coils available
  • 3 temperature gauges showing the drain, feed water inlet, and feed water outlet temperatures.

HX Series

Model Number HX400A HX400B HX450A HX450B HX470A HX470B
Capacity (PPH) 2,500 2,000 3,000 2,500 3,500 3,000
Coil Area (SF) 17 17 21 21 25 25
Coil Material Copper 304 SS Copper 304 SS Copper 304 SS
A (OAH) 42" 42" 48" 48" 54" 54"
B 22" 22" 28" 28" 34" 34"
C - BD Inlet NPTF 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2"
D - Blowdown Drain NPTF 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2" 1-1/2"
E- Shell Inlet NPT 2-1/2" 2-1/2" 2-1/2" 2-1/2" 2-1/2" 2-1/2"
F - Shell Outlet NPT 2-1/2" 2-1/2" 2-1/2" 2-1/2" 2-1/2" 2-1/2"
G - Temp Gauges 3 3 3 3 3 3
HX Series Diagram
HX Series Diagram

To learn more about our HX Series Blowdown Heat Recovery Systems, click here to contact us today!

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Celebrating 65 years of business

Madden Manufacturing has been designing and producing industrial steam equipment and diaphragm metering pumps for over 65 years now. We take great pride in the fact that our simple, rugged designs have been around since 1952 with only a few changes since.

With our smaller, family owned company, you can always expect responsive customer service and to receive some of the most durable products on the market. Thank you to all our distributors, reps and end users for helping us thrive for the past 65 years. 

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