PPT-27 Drainage Pipe Material

Drainage Pipe Material and Installation

Speaker : William K.H>.CheungCIPHE Plumbing Course 8 May, 2008

Prepared by : William KH CheungFeb, 2008

PPT-27

Plumbing and Drainage Pipe Material

Common Pipe Material for Drainage Use :

1. Cast Iron Pipe2. Ductile Iron Pipe3. Grey Cast Iron Pipe4. Hubless Cast Iron Pipe

5. UPVC Pipe (Drainage)6. UPVC Pipe (Plumbing)– Not Included7. Copper Pipe – Not Included8. Galvanized Iron Pipe

9. Spun Cast Iron Pipe – Not Included10. HDPE Pipe – Not Included11. Vitrified Clay Pipe Concrete Pipe – Not Included12. Concrete Pipe – Not Included

1. Socket Type Cast Iron Pipe

Standard : BS 416, BS 437. BS 460

Joint : Socket and spigot

Application : BS 416 - Above ground drainageBS 437 - Underground drainageBS 460 - Above ground rain water

Cast iron Pipe to BS 416

Drainage Pipe Materialsand Installations

C.I. Pipe joint poorly doneC.I. Pipe joint poorly done

Rusty C.I. Pipe

MOVO -- Casting of C.I. Fittings

Insufficient socket depth

China Made Cast Iron Fittings

Correct way of holding the Cast Iron Pipe

BS 437 C.I.Pipe for underground drainage use

2. Ductile Iron Pipe (Spun)

Standard : BS 4772 ( superseded)BSEN 545 – with cement liningBSEN 598 – without cement liningG.B 13295

Joint : Socket and spigot, rubber ring, flange

Application : Above ground, underground,and pumped drainage.

Ductile Iron Pipe

D.I Pipe – Socket Joint

Ductile Iron PipeRubber Gasket Joint

Change to pumped pipe

Ductile Iron Drainage Pumped Pipe( flange joint)

Flange for Ductile Iron Pipe is classified toPN25 and PN16

3. Grey Cast Iron Pipe (Spun)

Standard : BS 4622

Joint : Socket and spigot, rubber ring gasket

Application: Above ground Drainage

Grey Iron Pipe to B.S.4622

Pouring molten iron to fitting sand mould

Spinning process

Zinc Coating

4. Hubless Cast Iron Pipe (Spun)

Standard : ISO 6594 test to EN 877

Joint : Screwed coupling with rubber ring

Application: Above ground drainage

HublessHubless Cast Iron PipeCast Iron Pipe

Drainage Pipe Materials and Installations

HublessHubless Cast Iron PipeCast Iron Pipe

This trap is OK

This trap is not acceptable

No water seal

Hubless C.I. fittings made in North China

This double end connector shouldbe used at stack bottom

Drainage Pipe Materials and Installations

Indicate sharp edge of coupling

Speaker : William K.H>.CheungCIPHE Plumbing Course 8 May, 2008 47

Types of Couplings

Type G :Epoxy CoatedDuctile IronCoupling

Type A :Hoop StripCoupling

0.35Mpa)

Grip Collar

1. Make sure all sealing areas of allconnecting parts (spigots, pipes orfittings) are faultless and clean,remove any excess varnish (tears) togive a smooth and even surface.

Assembling Procedures

2. Gently remove the EPDMrubber sealing collar from

the stainless steel shell ofthe coupling.

3. Slide in the rubber collar to one end of the tube until it reachesthe center of the collar.

4. The shell is then mounted on top of the rubber collar andsecured in place.

5. Push in another pipe or fitting fromthe other end of the coupling all theway to the center of the collar (asin step 4).

6. Tighten the screw with a screwwrench or a powered screwdriver.

7. To assemble a grip collar, simply attach 2segments together first before it is snapped onto the coupling.

8. The claw segments must be evenly wraparound the coupling, pay attention that the clawinserts are not placed on the metal surface topof the coupling.

9. Screw together loosely the grip collarsegments, and then inter- changeably tightenthe bolts crosswise so that the fastening partsare drawn together in parallel, and preferablywith the same spacing.

10. When tightening the screws and nuts, seat thewashers behind the bolt heads and nuts.

11. Apply the necessary torque(Nm) on all screws until firmlylocked with the use of a torchwrench. Torque ranging from12-65 Nm depending on thepipe diameter.

Defective Hubless C.I.Pipe

Drainage Pipe InstallationIn Singapore

5. UPVC Pipe (Drainage)

Standard : Up to 65mm dia. – BS 5255 & BSEN 151980mm and above- BS 4514

Joint : Socket with solvent cement or rubber ring

Application: Above ground drainage

UPVC Pipe

Speaker : William K.H>.CheungCIPHE Plumbing Course 8 May, 2008UPVC Pipe

Ductile Iro

Leaking PipeLeaking Pipe

Speaker : William K.H>.CheungCIPHE Plumbing Course 8 May, 2008 China Practice

8. Galvanized Iron Pipe

Standard : BS 1387 Class A, B, C.

Joint : Screwed

Application: Above ground drainageFire Services

G.I. Pipe

Only socket joint is used for G.I. pipe drain

Victaulic Joint for G.I.Pipe is used for pressurized system

Thank you !Thank you !

PPT-27 Drainage Pipe Material

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