LAU CHEUNG LEE FOUNDRY CO., LTD.

Ductile Iron Double Seal Manhole Cover & Frame Specification

Ductile Iron Double Seal Manhole Cover & Frame Drawing

DS1088 One Piece Ductile Iron Double Seal Manhole Cover & Frame for Foul Water, Medium Duty

DS1088 One Piece Ductile Iron Double Seal Manhole Cover & Frame for Storm Water, Medium Duty

DS1089 One Piece Ductile Iron Double Seal Manhole Cover & Frame for Foul Water, Heavy Duty

DS1089 One Piece Ductile Iron Double Seal Manhole Cover & Frame for Storm Water, Heavy Duty

Ductile Iron Double Seal Manhole Cover & Frame

Features       : Airtight when sealing groove is filled with grease or other suitable
                       compound.

Functions     : Designated to be used in Government roadway drainage projects
                       and maintenance projects.

Applications : For Storm Water (with circumscribed raised stubs on the cover)
                       For Foul Water (with rectangular raised stubs on the cover)

Test Details of Ductile Iron Double Seal Manhole Cover & Frame

Type of manhole cover and frame	Grade	Test requirements
		Diameter of block (mm)	Test load (kN)
Double seal manhole cover & frame (DS1088)	Medium duty	250	125
Double seal manhole cover & frame (DS1089)	Heavy duty	250	250

Drainage Services Department DS Series Standard Drawings
for DS1088, DS1089