Concentric Rubber Seated Butterfly Valves
	
		
 
		- 
			
PRODUCT MODEL
			
				- DKV-CRW Concentric rubber seated
wafer type butterfly valve 
				- DKV-CRL Concentric rubber seated
lug type butterfly valve 
				- DKV-CRF Concentric rubber seated
flange type butterfly valve 
			
		 
	
 
				 
				
					
DRAWING AND PART LIST OF CONCENTRIC BUTTERFLY VALVES
	
		
 
		- 
			
				
					DKC
				
				
				
				
					
						| No. | 
						Part Name | 
					
					
						| 1 | 
						BODY | 
					
					
						| 2 | 
						DISC | 
					
					
						| 3 | 
						SEAT | 
					
					
						| 4 | 
						STEM | 
					
					
						| 5 | 
						DISC PIN | 
					
					
						| 6 | 
						PACKING | 
					
					
						| 7 | 
						PACKING GLAND | 
					
					
						| 8 | 
						GLAND FLANGE | 
					
					
						| 9 | 
						BEARING | 
					
					
						| 10 | 
						BOTTM GASKET | 
					
					
						| 11 | 
						BOTTOM COVER | 
					
					
						| 12 | 
						BOLT & WASHER | 
					
					
						| 13 | 
						KEY or SQUARE | 
					
				
			
		 
	
 
				 
				
					
  
    STANDARD COMPLIANCE
    
      - Concentric butterfly valves conform to ISO 5752, KSV 7490, JIS F 7480, JIS B 2032, JIS B 2064, API609,BS5155, DIN2501
 
    
   
  
    PRODUCTION RANGE
    
      - Valve Size : 40mm (1-1 / 2 in) ~ 1,800mm (72 in)
 
      - Rating Temperature : -20℃ ~ +80℃
 
      - Working Pressure : up to 16 bar
 
    
   
  
    APPLICABLE FLANGE
    
      - KS / JIS 5K / 10K / 16K
 
      - ASME B16.1 CLASS125, ASME B16.5 CLASS150
 
      - ASME B16.47 SR.A / B CLASS150
 
      - BS EN1092-1 PN6 / PN10 / PN16
 
      - AWWA C207 CLASS B / D / E 
 
    
   
  
    SCHEMA OF CONCENTRIC TYPE
    The valves shall be a 90° turn clockwise to close, no-jamming, and resilient seated valve for zero leakage service. 
      The valves shall be torque seated and designed in such a manner that the disc can not be rotated the seat without 
      the actuator. Also theses valves enable the fluid perfect shut-off regardless of the flow direction.
    
      - Symmetric disc design ensures favourable flow characteristics and low pressure drop
 
      - Concentric shaft ensures low operating torque
 
      - Lining gives a good protection to valve body and acts as flange gasket
 
        - - Shaft penetrates the valve seat
 
        - - Limited choice of seating materials(Elastomer only)
 
    
   
  
    OPERATIONS
    The following operation of the valve is possible depending on the valve location, 
        the type of work and service of the valve to be provided
    
      - Manual lever operation
 
      - Manual worm gear operation
 
      - Hydraulic actuator operation
 
      - Electric motor actuator operation
 
      - Single or double acting pneumatic actuator operation
 
    
   
  
        
          DKC
        
        
        
        
          
            | Range | 
            Application | 
          
          
            | Size | 
            1-1/2"(40A) ~ 72"(1800A) | 
          
          
            | Fluid | 
            Water | 
          
          
            | Rating | 
            JIS 10K, ANSI 150#, PN10 | 
          
          
            | End Connection | 
            Wafer, Lugged, Flanged | 
          
          
            | Temp. Range | 
            NBR -20 ~ 80°C EPDM -20 ~ 120°C VITON -20 ~ 165°C | 
          
          
            | Materials | 
            Body | 
            Cast Iron, Ductile Iron, Cast Steel, Stainless Steel, (Ni) Al Bronze, (Super) Duplex S.S etc. | 
          
          
            | Disc | 
            Stainless Steel, (Ni) Al Bronze, (Super) Duplex S.S etc. | 
          
          
            | Seat | 
            Rubber (EPDM, NBR, VITON etc.) |