Nominal Pipe Diameter
                                                                                                                                                                                                                                 | 
                                                                        
                                                                            
                                                                                    
                                                                                        N/A
                                                                                        80 A 
                                                                                    
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                                                                                D1 - Pipe Outside Diameter by KS/JIS
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                                                                                        N/A
                                                                                        89.1 mm
                                                                                    
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                                                                                D2 - Pipe Min-Max Range
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                                                                                        N/A
                                                                                        88-92 mm
                                                                                    
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                                                                                OD - Outside Diameter
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                                                                                        N/A
                                                                                        3.500 in
                                                                                    
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                                                                                M -  Tightening Bolt SUS 304 or SCM 435
                                                                                                                                                                                                                                 | 
                                                                        
                                                                            
                                                                                    
                                                                                        N/A
                                                                                        M12x85Lx2BOLTS 
                                                                                    
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                                                                                A - Diameter of SUS 304 or S45C Bar and Barnut
                                                                                                                                                                                                                                 | 
                                                                        
                                                                            
                                                                                    
                                                                                        N/A
                                                                                        18 mm
                                                                                    
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                                                                                L - Length of Coupling
                                                                                                                                                                                                                                 | 
                                                                        
                                                                            
                                                                                    
                                                                                        N/A
                                                                                        107 mm
                                                                                    
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                                                                                l  - Sealing Sleeve Lip's Distance
                                                                                                                                                                                                                                 | 
                                                                        
                                                                            
                                                                                    
                                                                                        N/A
                                                                                        65 mm
                                                                                    
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                                                                                T - Thickness of SUS 304 Coupling Case
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                                                                                        N/A
                                                                                        1.5 mm
                                                                                    
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                                                                                U - Coupling Outside Diameter
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                                                                                        N/A
                                                                                        115 mm
                                                                                    
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                                                                                W.P - Maximum Working Pressure
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                                                                                        N/A
                                                                                        16 kg/cm²
                                                                                    
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                                                                                W - Weight per Each Set
                                                                                                                                                                                                                                 | 
                                                                        
                                                                            
                                                                                    
                                                                                        N/A
                                                                                        1.4 kg
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                P - Standard Torque
                                                                                                                                                                                                                                 | 
                                                                        
                                                                            
                                                                                    
                                                                                        N/A
                                                                                        15-20 N·m150-200 kgf·cm
                                                                                    
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                                                                                Tube Diameter
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                                                                                        N/A
                                                                                        3 in
                                                                                    
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                                                                                Norm
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                                                                                        N/A
                                                                                        KS/JIS 
                                                                                    
                                                                                                                                                     | 
                                                    
                                                    
                                                                        
                                                                                Sleeve Material
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                                                                                        N/A
                                                                                        EPDM NBR Silicone Viton 
                                                                                    
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