Standard 675 Square One-Piece
Ductile Iron Double Seal
Terminal Manhole Cover and Frame ( DSD )
 
675mm方內孔 雙止口球鐵沙井蓋板
 
675mm Clear Opening Ductile Iron Double Seal Manhole Cover and Frame ( DS1088 & DS1089 )
 
BSEN124-Class B125 & C250
   
 
 
STORM WATER 清水
FOUL WATER 污水
  
 
 
Technical Specification:
 
 
Note : The above dimensions are for reference only. Please refer to the actual products.
       
 
Standard:
BSEN124:1994
 
 

 
       
 
Functions:
The double-seal feature of the manhole covers and frames prevents foreign
Materials from entering into the underground sewage system and also prevents the
pungent smell and/or methane from getting out of the underground sewage system.
  
 
Type:
SW for storm water (with circumscribed raised stubs on the cover)
FW for foul water (with rectangular raised stubs on the cover)
  
   
 
HOKLAS Endorsed Test Certificates
 
   
 
 
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