SPX Cooling Technologies Fan Marley Reflex RTM User Manual

/ Marley Reflex™ RTM Fan Cylinder /  
Having designed and manufactured  
cooling tower fan cylinders since the  
1930s, Marley began producing FRP  
(fiberglass) fan cylinders in 1958, which  
quickly became the accepted standard  
within two years’ time. With considerable  
modeling and full scale testing, this  
experience led to the development of  
several new fan cylinder designs for a  
variety of tower types and fan sizes. One  
such development resulted in the Reflex  
velocity recovery cylinder in the 1980s,  
and is the standard design still in use  
today for 10’ diameter and larger fans.  
21st century manufacturing technology  
has enabled further advancement and  
the introduction of the new Marley Reflex  
RTM industrial fan cylinder, offering a  
more dimensionally accurate, high quality  
surface finish, better fit and robust  
structural integrity. A light RTM (resin  
transfer molding) closed-molding process  
lends itself to increased durability for  
the final product, and ensures laminate  
thickness and weight consistency.  
Because the cavities are infused using  
rigid forms in the ribs, there is no porosity  
or potential sites for delamination or  
structural fracture to begin. Therefore, the  
cylinder load capacity is greatly enhanced.  
The “green” benefit of the closed-molding  
process is the virtual elimination of VOC  
emissions because the resin is injected  
and cured in a sealed, closed mold. And  
because the lay-up process is now dry, a  
more precise laminate can be achieved,  
with no hand-working of resin-soaked  
materials, no cleaning requirements for  
application equipment, no hand tools using  
hazardous chemicals and no chemical  
disposal concerns.  
 

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