Robert, look at how the fittings seal. If there is a seat of some sort the fitting will be parallel. I have no experience with that valve but the earlier (CO1UC?) valve has special fittings that are BSP/ SAE if I recall. You need to carefully establish what the threads are. The BSP is quite course while the SAE is relatively fine. I hope that helps.
		 
		
		
		
		
		
		
			
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				Bluebell 
 
Carrier Armoured O.P. No1 Mk3 W.  T84991 
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. 
Dodge WC55. 37mm Gun Motor Carriage M6 
Jeep Mb #135668 
So many questions....
			 
		
		
		
		
		
	
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