metal rainwater outlets - moy materials products/outlets... · engineered drainage systems roof...

Engineered Drainage Systems

Roof Drainage SystemsHarmer Roof Outlets

Metal Rainwater Outlets

9Alumasc Technical Helpline 01744 648400

Metal RainwaterOutlets


Roof Drainage SystemsHarmer Roof OutletsMetal Rainwater Outlets

10 Alumasc Technical Helpline 01744 648400

Introduction to Anti-Vortex Outlets

The performance of AV outletsaccelerates as the depth of water atthe outlet or rainfall intensityincreases. The unique high flowperformance of Harmer Roof AVoutlets demands that each outlet isconnected to a dedicated or individualrainwater stack. AV outlets should beused for securing optimumperformance when connected toindividual downpipes, and not as partof a managed rainwater system.

Bolts and Washers

Stainless steel

AV Grate

Tamper proof, secured toclamping ring by two

pocketed stainless steel bolts

Clamping Ring

Designed to secure thewaterproof membrane to theoutlet body, it is fixed to the

outlet body with twostainless steel fixing studs

Outlet Body

Screwed, throughflange, to

supportingstructure

Main Characteristics

Enhanced Performance

Harmer rainwater outlets provide,with the Harmer Roof AV range, anti-vortex performance from aneconomic, general purpose range ofoutlets. Harmer Roof AV incorporatesa patented baffle within the grating,to prevent water swirl and airentrapment, enabling the outlet todrain at 90% of its pipe capacity.

Key Benefits of the Harmer Roof AV Range:■ Drains up to 40% more roof area than conventional gravity outlet.

■ AV can be used with any connecting pipework material, and all popular pipework sizes.

■ Easy installation into roofs and gutters using bituminous and single ply waterproofing systems.

■ High flow performance with increasing head of water at the outlet.

■ Ensures 90% efficiency of outlet capacity.

■ Special retro-gulley for flat roof refurbishment is also available.

■ Multi-gulley available for angled discharge.

1 1

22

3

3

44





Anti-Vortex OutletsVertical Spigot Outlet

Harmer Roof AV Vertical Spigot rainwateroutlets are designed for use with flatroof structures using either insitu castconcrete, timber and lightweight metaldeck construction. Harmer Roof outletsare ideal for connection to continuouswaterproofing systems using single plymembranes, mastic asphalt or highperformance built up felt.

Materials

Harmer Roof AV Vertical Spigot outletsare available in cast aluminium orgunmetal. Gunmetal outlets should bespecified for copper or lead-cladroofs,or slate roofs using copper nails.

Aluminium outlets are cast in LM6aluminium silicon alloy to BS 1490: 1988.

Gunmetal outlets are the same designas aluminium but are cast in 85/5/5/5leaded gunmetal to BS EN 1982: 1999 -CC491K.

Foamed insulation is available as anoption for both aluminium andgunmetal vertical spigot outlets.

Connection to Pipework

Vertical Spigot outlets are suitable fordirect connection to:

■ Cast iron pipework to EN 877 andBS 416: 1973 with appropriatecoupling.

■ HDPE pipework with appropriatecoupling.

■ PVC O-ring socketed pipe to BS 4514: 1983 (300, 400 and 600outlets only).

Grates

Harmer AV rainwater outlets aredesigned to receive either domical orflate grates. Flat grates should be usedif the outlet occurs in an area which issubject to pedestrian traffic. Thesegrates are also designed for use ininverted roof constructions, wherepaving slabs on special Harmer pavingslab supports are used to ballast theinsulation. Rainwater drains betweenthe open joints of the paving to theconcealed outlets beneath.

Spigots are sized to suit nominaldiameter pipework shown in thetable below

Table of Dimensions

Outlet ordering code(For flat grate, add /F to code reference) AV200 AV300 AV400 AV600

(mm) (mm) (mm) (mm)Pipe dia (nominal) 50 75 100 150

a 292 292 380 380

b 233 233 305 305

c 98 88 122 98

d 98 108 122 145

e 60 83 110 160

a

b

e

c

d

Flat grate (optional)

Domical grate

Note: A range of accessories is available for use with special detail requirements.See pages 24-26.




Anti-Vortex Outlets

Vertical Screw OutletHarmer Roof AV Vertical Screw rainwateroutlets are designed for use with flatroof structures using either insitu castconcrete, timber and lightweight metaldeck construction. Harmer Roof outletsare ideal for connection to continuouswaterproofing systems using single plymembranes, mastic asphalt or highperformance built up felt.

Materials

Harmer Roof AV Vertical Screw outletsare available in cast aluminium orgunmetal. Gunmetal outlets should be specified for copper, lead-clad roofsand for connection to copper pipework,or slate roofs using copper nails.


Gunmetal outlets are the same design asaluminium but are cast in 85/5/5/5 leadedgunmetal to BS EN 1982: 1999 - CC491K.

Optional foamed insulation is availablefor both aluminium and gunmetal outlets.


Vertical Screw outlets have a femalesocket with parallel thread to BS 21: 1985for direct connection to threaded tubeconforming with BS 1387:1985. This tubeis supplied with BS 21: 1985 taper malethread which ensures a completelywatertight joint when screwed home intothe socket outlet.

Screw outlets are particularlyrecommended where a connection to theoutlet occurs within the thickness of aconcrete slab. In such cases, a threadedconnection will create a completely gas-tight seal within the slab.

Harmer Roof AV screw outlets can beconnected to socketed and socketless castiron pipework, HDPE pipework and PVCpipework by means of the Harmer Roofscrew threaded adaptor with appropriatecoupling. (See pages 6 and 26).

Grates

Harmer AV rainwater outlets are designedto receive either domical or flate grates.Flat grates should be used if the outletoccurs in an area which is subject topedestrian traffic. These grates are alsodesigned for use in inverted roofconstructions, where paving slabs onspecial Harmer paving slab supports areused to ballast the insulation. Rainwaterdrains between the open joints of thepaving to the concealed outlets beneath.


Connections to suit nominaldiameter pipe sizes shown in thetable below

a

b

Table of Dimensions

Outlet ordering code(For flat grate, add /F to code reference) AV200T AV300T AV400T AV600T


a 292 292 380 380

b 234 234 305 305

c 86 76 95 76

d 35 45 38 38

c

d


Domical grate





Retro-Gulley OutletHarmer Roof AV Retro-Gulley outletsare designed to fit within the existingoutlet and pipework of the roof whichis being upgraded.

The use of AV increases flowperformance at the outlet locationregardless of pipe diameter downsizingby introduction of the retropipe.

There is no need to remove the oldrainwater outlet.

Because of minimal disturbance andthe ease with which the Retro-Gulley isfitted, it represents an extremely cost-effective and efficient solution to flatroof upgrading.

Materials

The outlet body is in diecast LM6aluminium silicon alloy to BS 1490: 1988,and incorporates a welded 300mmaluminium tail pipe. The tail pipe, cut tothe required length, is simply insertedthrough the existing outlet, into existingpipework, and sealed by means of theHarmer Roof AV special multi-fin pipeseal. This seal creates a watertightjunction between existing pipework andthe Retro-Gulley tail pipe.

The outlet body’s wide fixing flangeincorporates concentric grooves whichenhance the bond with roofing felts orasphalt.

An LM6 aluminium silicon clampingring, also has a ridged under-surfacefor improved bond with roofingmembranes.

Two sealable ports in the outlet body aredesigned for injection of PU foam to fillthe void between old and new outlet.


The Retro-Gulley may be used for anytype of warm roof refurbishment andwith any flat roof waterproofingsystem. 75mm and 100mm pipeworkoptions are available, and willaccommodate variations on pipeinternal diameter from PVC through tocast iron pipe systems.

The AV Retro-Gulley has been designedin conjunction with the Flat RoofingContractors Advisory Board.


Table of Dimensions

Outlet ordering code RAV75 RAV100

(mm) (mm)Pipe dia (nominal) 75 100

a 456 456

b 304 304

c 34 34

d 46 46

e 266 266

f 63.5 88.9

g 55 42

h 95 120

i 205 205

Existing Pipe Diameter Ranges Suitable for Connection to AV Retro-Gulley

Outlet ordering code Existing pipework internal diameter(mm)

RAV75 71.5 — 78.5

RAV100 97.0 — 104.0

a

b

f

c

d

e

g h g

i




Anti-Vortex Outlets

Multi-Gulley OutletHarmer Roof AV Multi-Gulley outlets aredesigned to provide multidirectionaldrainage. Rotated on site, theinterchangeable spigot pipe allows forany angled outflow from vertical tohorizontal. This flexibility also affordseasier alignment of pipe systems.

Interchangeable spigots lock onto thesingle size outlet body, yet enableconnections to 75mm or 100mmpipework to be made. The special sumpdesign of the outlet body works inconjunction with the anti-vortex grateto provide optimum rainwatermovement. The Multi-Gulley has beendesigned in close co-operation withthe Flat Roofing ContractorsAdvisory Board. The fixing designextends the use of the Multi-Gulleyto built-up roofing, single ply andmastic asphalt waterproofing.

Materials

Harmer Roof AV Multi-Gulley outlets areonly available in cast aluminium.

Aluminium outlets are cast in LM6aluminium silicon alloy to BS 1490:1988

Connection to pipework

The Multi-Gulley outlets are suitablefor direct connection to:



■ PVC O-ring socketed pipe to BS 4514: 1983.


Table of Dimensions

Outlet ordering code MAV75 MAV100


a 460 460

b 305 305

c 201 201

d 115 115

e 83 110

a

b

c

d

e





Introduction to Detail Outlets

Main CharacteristicsThe Harmer Roof Detail range includesoutlets to cover all the awkwarddetailing situations that occur inbuilding design and in refurbishment.

Harmer Roof Detail outlets incorporateall the key features inherent in theAlumasc design approach to trouble-free flat roof drainage:

■ Integral and generously propor-tioned sump ensures an adequatehead of water for a steady flowinto the rainwater pipe.

■ Clamp fixing of the waterproofmembrane to the sides of the sumpcompletely eliminates any risk ofleakage through capillary action orback pressure.

■ Elimination of flashings meansthere is nothing which might reducethe effective bore of the rainwaterpipe and restrict the flow of water.

■ Connection to all standard sizes ofpipework.

Areas of ApplicationHarmer Roof Detail includes outletsspecially designed for the followingsituations:

■ Spigot or Screw threaded aluminiumoutlets cast in LM6 aluminium alloyfor connection to drainage pipeworkat 45º and 90º.

■ Two-way screw threaded outletscast in LM6 aluminium alloy forconnection to pipework through aparapet. Two-way outlets can beinstalled to provide either verticalor horizontal take-off, and areparticularly suitable for parapettype applications.

■ Balcony spigot outlets cast in LM6aluminium alloy for balconydrainage or similar applications.Supplied with a flat grate thebalcony outlet is ideal for use inareas of pedestrian access. Gratescan be hole punched to receive 50,75 or 100mm diameter rainwaterdown pipes.

■ Gulley spigot outlets cast in LM6aluminium alloy for narrow gutterand gulley drainage where an outletnarrower than the standard AVoutlet is required.

■ Screw threaded car park andservice deck drains cast in LM6aluminium alloy for drainagerequirements in multi-level car parkand utility areas.

■ All patterns of outlets can bemanufactured in cast gunmetal alloy,reference CC491K, where outletinstallation is required near to orwithin copper or lead roofing systems.

45º Spigot Outlet

45º Screw Outlet

90º Spigot Outlet

Two-way Outlet

Balcony Outlet

Gulley Outlet

Car Park Outlet

90º Screw Outlet




Detail Outlets

45º Spigot OutletHarmer Roof Detail 45° Spigot rainwateroutlets are designed for use with flatroof structures using either insitu castconcrete, timber and lightweight metaldeck construction. Harmer Roof outletsare ideal for connection to continuouswaterproofing systems using single plymembranes, mastic asphalt or highperformance built up felt.

Materials

Harmer Roof Detail 45º Spigot outletsare available in cast aluminium orgunmetal. Gunmetal outlets should bespecified for copper, lead-clad roofs orslate roofs using copper nails.




45º Spigot outlets are suitable fordirect connection to:



Connection to PVC O-ring socketed pipeto BS 4514: 1983 can be made by meansof a proprietary post-formed socket. Thesocket is preformed onto the PVCpipework and then heat-shrunk over thespigot of the outlet with an O-ring inposition. However a simpler, and thuspreferred solution in such cases, is to usea Harmer Roof Detail 45º Screw outletwith Harmer Roof Screw Thread Adaptor.

Grates

Harmer Roof Detail 45º Spigot outletsare designed to receive either domicalor flat grates. Flat grates should beused if the outlet occurs in an areawhich is subject to pedestrian traffic.These grates are also designed for usein inverted roof constructions, wherepaving slabs on special Harmer pavingslab supports are used to ballast theinsulation. Rainwater drains betweenthe open joints of the paving to theconcealed outlets beneath.


Table of Dimensions

Outlet ordering code(For flat grate, add /F to code reference) 245 345 445

(mm) (mm) (mm)Pipe dia (nominal) 50 75 100

a 305 305 372

b 229 229 305

c 229 235 273

d 175 175 191

e 62 87 114

a

b

c

d

e


Domical grate






45º Screw OutletHarmer Roof Detail 45° Screw rainwateroutlets are designed for use with flatroof structures using either insitu castconcrete, timber and lightweight metaldeck construction. Harmer Roof outletsare ideal for connection to continuouswaterproofing systems using single plymembranes, mastic asphalt or highperformance built up felt.

Materials

Harmer Roof Detail 45º Screw outletsare available in cast aluminium orgunmetal. Gunmetal outlets should be specified for copper, lead-clad roofs orslate roofs using copper nails.




45º Screw outlets have a female socketwith parallel thread to BS 21:1985 fordirect connection to threaded tubeconforming with BS 1387: 1985. Thistube is supplied with BS 21: 1985 tapermale thread which ensures acompletely watertight joint whenscrewed home into the socket outlet.

45º Screw outlets are particularlyrecommended where a connection tothe outlet occurs within the thickness ofa concrete slab. In such cases a threadedconnection will create a completely gas-tight seal within the slab.

Harmer Roof AV screw outlets can beconnected to socketed and socketless castiron pipework, HDPE pipework and PVCpipework by means of the Harmer RoofScrew Threaded Adaptor with appropriatecoupling. (See pages 6 and 26).

Grates

Harmer Roof Detail 45º Screw outletsare designed to receive either domicalor flat grates. Flat grates should beused if the outlet occurs in an areawhich is subject to pedestrian traffic.These grates are also designed for usein inverted roof constructions, wherepaving slabs on special Harmer pavingslab supports are used to ballast theinsulation. Rainwater drains betweenthe open joints of the paving of theconcealed outlets beneath.


Table of Dimensions

Outlet ordering code(For flat grate, add /F to code reference) 245T 345T 445T


a 305 305 372

b 229 229 305

c 159 159 186

d 109 109 113

a

b

c

d


Domical grate





Detail Outlets

90º Spigot OutletHarmer Roof Detail 90° Spigot rainwateroutlets are designed for use with flatroof structures using either insitu castconcrete, timber and lightweight metaldeck construction. Harmer Roof outletsare ideal for connection to continuouswaterproofing systems using single plymembranes, mastic asphalt or highperformance built up felt.

Materials

Harmer Roof Detail 90º Spigot outletsare available in cast aluminium orgunmetal. Gunmetal outlets should be specified for copper, lead-clad roofs orslate roofs using copper nails.




90º Spigot outlets are suitable fordirect connection to:



■ PVC O-ring socketed pipe to BS 4514:1983 (390 and 490 outlets only).

If the connection to the pipework occurswithin the thickness of a concrete slab,Harmer Roof Detail 90º Screw outletsare recommended.

Grates

Harmer Roof Detail 90º Spigot outletsare designed to receive either domicalor flat grates. Flat grates should beused if the outlet occurs in an areawhich is subject to pedestrian traffic.These grates are also designed for usein inverted roof constructions, wherepaving slabs on special Harmer pavingslab supports are used to ballast theinsulation. Rainwater drains betweenthe open joints of the paving to theconcealed outlets beneath.


Table of Dimensions

Outlet ordering code(For flat grate, add /F to code reference) 290 390 490


a 305 329 405

b 229 229 305

c 124 121 142

d 232 267 285

e 62 83 110

a

b

c

e

d


Domical grate






90º Screw OutletHarmer Roof Detail 90° Screw rainwateroutlets are designed for use with flatroof structures using either insitu castconcrete, timber and lightweight metaldeck construction. Harmer Roof outletsare ideal for connection to continuouswaterproofing systems using single plymembranes, mastic asphalt or highperformance built up felt.

Materials

Harmer Roof Detail 90º Screw outletsare available in cast aluminium orgunmetal. Gunmetal outlets should be specified for copper, lead-clad roofs orslate roofs using copper nails.




90º Screw outlets have a female socketwith parallel thread to BS 21: 1985 fordirect connection to threaded tubeconforming with BS 1387: 1985. Thistube is supplied with BS 21: 1985 tapermale thread which ensures acompletely watertight joint whenscrewed home into the socket outlet.

90º Screw outlets are particularlyrecommended where a connection tothe outlet occurs within the thickness ofa concrete slab. In such cases a threadedconnection will create a completely gas-tight seal within the slab.

Harmer Roof AV screw outlets can beconnected to socketed and socketless castiron pipework, HDPE pipework and PVCpipework by means of the Harmer RoofScrew Threaded Adaptor with appropriatecoupling. (See pages 6 and 26).

Grates

Harmer Roof Detail 90º Screw outletsare designed to receive either domicalor flat grates. Flat grates should beused if the outlet occurs in an areawhich is subject to pedestrian traffic.These grates are also designed for usein inverted roof constructions, wherepaving slabs on special Harmer pavingslab supports are used to ballast theinsulation. Rainwater drains betweenthe open joints of the paving to theconcealed outlets beneath.


Table of Dimensions

Outlet ordering code(For flat grate, add /F to code reference) 290T 390T 490T 690T


a 305 305 356 356

b 229 229 305 305

c 127 127 172 225

d 140 140 152 152

a

b

d

c


Domical grate





Detail Outlets

Two-Way OutletHarmer Roof Detail Two-Way outletsare designed for applications where anangle is formed by the intersection ofvertical and horizontal surfaces (forexample, where a balcony or roofmeets a parapet wall). They can beinstalled to provide either vertical orhorizontal take-off.

Two types are available, the regularTwo-Way and the mini Two-Way outlet.The latter is specially designed forconnection to 50mm pipework insituations where the drainagerequirement is small, such as domesticbalconies.

Materials

Two-Way outlets are available in castaluminium or gun metal. Gunmetaloutlets should be specified for copperor lead-clad roofs and for connection tocopper pipework. Two-way outlets aresupplied with screw connection only.




Two-Way outlets have a female socketwith parallel thread to BS 21: 1985 fordirect connection to threaded tubeconforming with BS 1387: 1985. Thistube is supplied with BS 21: 1985 tapermale thread which ensures acompletely watertight joint whenscrewed home into the socket outlet.

Screw outlets are particularlyrecommended where a connection tothe outlet occurs within the thicknessof a concrete slab. In such cases athreaded connection, achieved by useof a Harmer Roof Screw ThreadAdaptor, will create a completely gas-tight seal within the slab.

Harmer Two-Way outlets can beconnected to socketed and socketless castiron pipework, HDPE pipework and PVCpipework by means of the Harmer RoofScrew Threaded Adaptor with appropriatecoupling. (See pages 6 and 26).

Connections to suitnominal diameter pipesizes shown in thetable below

Table of Dimensions

Outlet ordering code 2TW-M 2TW 3TW 4TW 6TW

(mm) (mm) (mm) (mm) (mm)Pipe dia (nominal) 50 50 75 100 150

a 125 204 204 204 280

b 42 50 50 50 45

c 140 214 214 214 265

d 130 191 191 191 250

e 52 70 70 70 73

f 190 255 255 255 316

g 10 20 20 20 25

h 75 75 107 130 181

i 45º 45º 45º 45º 45º

d

i

a

e

c

b

f

h

g g





Balcony OutletHarmer Roof Detail Balcony outlets aredesigned for use with concrete balconystructures and are fitted with flat gratesfor safe drainage in pedestrian accessedareas. The gratings of these outlets canbe punched out to receive an incomingrainwater pipe from above thusproviding for local as well as continuousdrainage in series. Harmer Balconyoutlets are ideal for connection to singleply membranes, mastic asphalt or highperformance built up felt.

Materials

Harmer Roof Detail Balcony outlets areavailable in cast aluminium orgunmetal. Gunmetal outlets should be specified for copper or lead-clad roofsfor connection to copper pipework.




Balcony outlets are suitable for directconnection to:

■ Cast iron pipework to BS 416: 1973or EN 877.

■ PVC O-ring socketed pipe to BS 4514: 1983 (3BO and 4BO outletsonly).

Flat grates can be supplied with holepunched out to receive 50, 75 or100mm nominal bore rainwaterdownpipes. If pre-punched grates arerequired, add /2H, /3H or /4H to thecode reference when ordering.Alternatively, the hole can be cut onsite by the installer.

The Balcony outlet can be used with anextension piece. (See pages 24 and 25).

Spigots are sized to suitnominal diameterpipework shown in thetable below

Table of Dimensions

Outlet ordering code 2BO 3BO 4BO


a 270 205 205

b 205 229 305

c 52 52 52

d 58 58 58

e 125 125 125

f 180 180 180

g 242 242 242

h 186 186 186

i 60 83 110

b

a

c

d

e

f

i

h

g




Detail Outlets

Gulley OutletHarmer Roof Detail Gulley outletsshould be used in roof constructionsincorporating formed drainagechannels. They are specially designedto suit restricted width gulleys whichare too narrow for standard outlets.

Materials

Gulley outlets are available in castaluminium or gunmetal. Gunmetaloutlets should be specified for copperor lead-clad roofs and for connection tocopper pipework.




Gulley outlets have a vertical spigot andare suitable for direct connection to:


■ PVC O-ring socketed pipe to BS4514: 1983.

The Gulley outlet can be used with anExtension Piece. (See pages 24 and 25).

Spigots are sized to suitnominal diameterpipework shown in thetable below

Table of Dimensions

Outlet ordering code 3GO 4GO


a 188 188

b 20 20

c 334 334

d 121 121

e 130 130

f 83 110

f

ab b

c

d

e





Car Park OutletHarmer Roof Detail Car Park outletshave been specially designed for instal-lation in parking decks for cars andlight commercial vehicles (ie, wherethere is a maximum single wheelloading of 1 tonne and total weight ofapproximately 255 kg/m2).

The screw body is available in twotypes, flanged and flangeless. The latteris for use in situations that do notrequire a waterproof membrane or seal.

Materials

Car Park outlets consist of analuminium vertical screw body withraising ring, two clamping rings andstandard flat grate.


The outlet body has a female socketwith parallel thread to BS 21: 1985 fordirect connection to threaded tubeconforming with BS 1387: 1985.

Where the outlet is to be connected tosocketed or socketless cast ironpipework, or PVC pipework, Alumascwill supply a special ABS adaptor in alength to suit the thickness of the deckconstruction. The adaptor is taper-threaded externally at one end to BS 21:1985, and chamfered at the other endto BS 4514: 1983 spigot dimensions.

The adaptor spigots are suitable fordirect connection to:


■ PVC O-ring socketed pipe to BS4514: 1983.

Harmer Roof Detail Car Park outlets aredesigned for installation into eitherinsulated or uninsulated decks.

Table of Dimensions

Flanged FlangelessOutlet ordering code 400T/CP 600T/CP 400T/DD 600T/DD


a 380 380 — —

b 305 305 305 305

c 95 76 95 76

d 38 38 38 38

a

b

c

d




Grate Extension PiecesGroup 1This group of Grate Extension Pieces isused with the following types of outlet:

■ AV Vertical Spigot.

■ AV Vertical Screw.

■ AV Retro-Gulley.

■ AV Multi-Gulley.

■ Detail 45º and 90º Spigot.

■ Detail 45º and 90º Screw.

They are for applications where it isnecessary to raise the level of thegrate above the body of the outlet suchas in inverted roof construction.

Materials

Grate Extension Pieces are available in LM6 aluminium silicon alloy to BS 1490: 1988 or 85/5/5/5 leadedgunmetal to BS EN 1982: 1999 - CC491Kfor use with aluminium or gunmetaloutlets respectively.

Connection to Outlet

The Grate Extension Pieces will acceptdomical grates and terrace grates butnot standard flat grates. Terrace Gratescan be used only in connection withgrate extension pieces. The extensionpieces can be cut down if necessary tosuit the thickness of paving or tiles.This can be done easily on site with ahacksaw, or, if required, extensionpieces can be trimmed prior to delivery.

Grate Extension Pieces are suppliedwith one set of stainless steel extensionstuds per outlet.

Grate Extension PiecesGroup 2This group of Grate Extension Pieces isused with the following types of outlet:

■ Detail Balcony.

■ Detail Gulley.

These Grate Extension Pieces performthe same function as those for AVoutlets, and Detail 45º/90º Spigot andScrew outlets.

Materials

Both Balcony and Gulley outletextension pieces are available in LM6aluminium silicon alloy to BS 1490:1988 or 85/5/5/5 leaded gunmetal to BS 1400: 1985 for use with aluminium or gunmetal outlets respectively.

AccessoriesA range of accessories is available foruse in connection with Harmer Roofmetal rainwater outlets. Theaccessories are designed to permit theinstallation of Harmer Roof metaloutlets in both typical and lessstandard roof constructions - warmroofs, inverted roofs, terraceapplications, and concealed underraised paving slabs.

Terrace GratesTerrace Grates are designed for installation in terrace tiles or brickpaviors. They should be used inconnection with Grate Extension Pieceswhich raise the Terrace Grate to thelevel of the paved surface. The radiusslots in the grate allow for movementthrough 90º permitting adjustment tosuit surrounding paving prior to finaltightening.

Materials

Terrace Grates are available in LM6aluminium silicon alloy to BS 1490: 1988or 85/5/5/5 leaded gunmetal to BS EN1982: 1999 - CC491K for use withaluminium or gunmetal outlets respectively.

Grate Extension Piece 23EP

Grate Extension Piece 46EP

Balcony Outlet Extension Piece BO/EP

Gulley Outlet Extension Piece GO/EP

Terrace Grate 23TG

Terrace Grate 46TG





160

25

25

232

161

128

150

233

222

128

220

115

240

115

Matching Outlets With Accessories

Accessory Outlet code reference code reference

23EP AV Outlets

AV 200, AV300, AV200T, AV300TDetail Outlets

245, 345, 245T, 345T, 290, 390, 290T, 390T46EP AV Outlets

AV400, AV600, AV400T, AV600T, RAV75, RAV100, MAV75, MAV100Detail Outlets

445, 445T, 490, 490T, 690TBO/EP Detail Outlets

2BO, 3BO, 4BOGO/EP Detail Outlets

3GO, 4GO

Grate Extension Pieces Used With AV and Circular Detail Outlets

Code reference: 23TG(For use with Extension Piece 23EP)

Grate Extension Piece Used With Detail Balcony Outlets

Grate Extension Piece Used With Detail Gulley Outlets

Terrace Grates (Used With Circular Grate Extension Pieces Below)

Code reference: 46TG(For use with Extension Piece 46EP)

Gulley outlet extension piece code reference: GO/EP

Balcony outlet extension piece code reference: BO/EP

Extension piece code reference: 23EP Extension piece code reference: 46EP




Accessories

Screw Thread to SpigotAdaptorThe Screw Thread Adaptor has beendesigned to facilitate the connectionof Harmer Roof AV and Detail screw-threaded metal rainwater outlets toPVC pipework. The adaptor is suitablefor connection with all types of pipesystems and presents an economicalternative to using a short length ofsteel gas tube to BS 1387: 1985 in thecase of cast iron socketed orsocketless systems. (See page 6).

Materials

The Screw Thread Adaptor, made ofABS plastic, is supplied in 305mmlengths, taper-threaded externally atone end to BS 21: 1985 and chamferedat the other end to BS 4514: 1983spigot dimensions. Sizes are availableto suit 50, 75, 100 and 150mm nominalbore pipework.


The Screw Thread Adaptor is screwedinto the base of the outlet using a ptfetape to obtain a gas-tight seal. Thespigot end of the adaptor can then beconnected to the pipe socket. Ifnecessary, the length of the spigot end ofthe adaptor can be reduced by cutting asrequired with a fine toothed saw.

The spigots of Harmer Roof ScrewThread Adaptors are suitable for directconnection to:

■ Cast iron pipework to EN 877 andBS 416: 1973.

■ HDPE pipework with appropriatecouplings.

■ PVC O-ring socketed pipe to BS 4514: 1983.

Metal Deck SupportPlatesHarmer Roof pressed Metal SupportPlates are recommended for use whereHarmer Roof metal and insulatedrainwater outlets are installed in metaldeck roof construction. They aredesigned to provide a secure and stablejunction between roof deck andrainwater outlet.

The Support Plates incorporate pre-punched holes for ease of fixing. Twosizes are available. The 335 x 335mmplate will suit 50 and 75mm metaloutlets and all insulated outlets. The415 x 415mm plate is designed for all100 and 150mm metal outlets.

Materials

The Support Plates are manufacturedfrom 1.5mm (16 gauge) steel sheet,finished in red oxide. They are suitablefor installation in all types of metaldeck roofing.

Note: Screw Tread Adpators are available with alonger tail for use in deep slabs. Add L tocode reference and state required length.

Plan view of Harmer outlet body in theMetal Deck Support Plate fixed to thestructural metal deck.

Code reference SP1

Code reference SP2

Screw Thread Adaptors2ADP, 3ADP, 4ADP and 6ADP

Table of Dimensions

Code reference Nominal bore A(mm)

2ADP 50

3ADP 75

4ADP 100

6ADP 150

305

150

A 335335

415 415

The nominal bore A of theScrew ThreadAdaptor varies in diameter, and isshown in the table below.

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