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			#1  
			
			
			
			
			
		 
		
		
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			 I just changed my ro membrane.  I increase from a 25 to 60 gpd. 
		
	
		
		
		
		
			I can hear a noise (hiss) at the flow restrictor. It doesn't seem to be air... but that is what it sounds like. The fitting is tight. Any suggestions would be appreciated. TIA Rob 
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			#2  
			
			
			
			
			
		 
		
		
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			 try some teflon tape?? 
		
	
		
		
		
		
			
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	Christy's Reef Blog My 180 Build Every electronic component is shipped with smoke stored deep inside.... only a real genius can find a way to set it free.  | 
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			#3  
			
			
			
			
			
		 
		
		
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			 I'll try putting more on but it didn't hiss before and the fitting hasn't been moved. 
		
	
		
		
		
		
			
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			#4  
			
			
			
			
			
		 
		
		
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			 if u change your membrain gpd out put youhave to match the restrictor to the membrains gpd or you can reck your membrain pritty quick.so u would need to track down a 65 gpd restrictorfor the new membrain 
		
	
		
		
		
		
		
	
		
		
	
	
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			#5  
			
			
			
			
			
		 
		
		
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			 I changed the restictor with the membrane.  Does water make noise as it passes the restrictor?  I sound like water passing though...  maybe.  I didn't notice it before.  It isn't air... at least I don't think so. 
		
	
		
		
		
		
			
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			#6  
			
			
			
			
			
		 
		
		
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			 it will make some noise my unit makes alittle noise at 100gpd . 
		
	
		
		
		
		
		
	
		
		
	
	
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			#7  
			
			
			
			
			
		 
		
		
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			 Thanx for the responses.  The noise isn't that loud... I have to put my ear on the housing to hear it.  I think it is that the increased flow is audible. 
		
	
		
		
		
		
			
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			#8  
			
			
			
			
			
		 
		
		
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			 My RO unit has hissed from day one, new, out of the box. 
		
	
		
		
		
		
		
	
		
		
	
	
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			#9  
			
			
			
			
			
		 
		
		
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			 thanx Jack... I feel better 
		
	
		
		
		
		
			
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