Main external dimensions and connection dimensions
                                    
                DN(mm)
                
                mm :500
	                
                
                in :20
	                
                
                Structure length (standard value)(mm)
                
                L :229
	                
                
                Dimension(ref value)(mm)
                
                H :380
	                
                
                D343H  
                
                H1 :1305
	                
                
                A1 :535
	                
                
                B1 : 580
	                
                
                D643H  
                
                H2 :1290
	                
                
                A2 :650
	                
                
                B2 :280
	                
                
                D943H  
                
                H3 :1415
	                
                
                A3 : 575
	                
                
                B3 :714
	                
                
                Connection size (standard value)(mm)
                
                1.0MPa
                
                D :670
	                
                
                D1 :620
	                
                
                D2 :585
	                
                
                Z-φd :20-26
	                
                
                1.6MPa
                
                D :715
	                
                
                D1 :650
	                
                
                D2 :608
	                
                
                Z-φd :20-33