Description

The Harmer roof cast iron range of outlets are designed for use with flat roof structures using either in-situ cast concrete, timber or lightweight metal deck construction. They are ideal for connection to continuous waterproofing systems using mastic asphalt, high performance built-up felt, wet-applied waterproofing systems and most types of single ply membranes.

Compliance:

  • Designed load rating up to 12.5 tonnes.
  • Drainage flow performance to BS EN 12056-3.

Components:

Harmer cast iron roof outlets are made up of three base components;

  • The body with integral sump for controlled flow of water into the pipe.
  • The clamping ring which is designed to compress the waterproof membrane against the outlet body to ensure a total seal.
  • Grate (domical or flat) which permit a free flow of rainwater while preventing loose debris from entering the outlet (flat grates are used for trafficked or pedestrian areas). An important feature of the domical or flat grate is that it can be removed without disturbing the clamping ring and waterproof seal of the roofing membrane.

Flow performance:

- Medium sump outlets:

The medium sump range is a compact outlet body in vertical and horizontal variations for connection to 50, 75 and 100 mm pipe work. Vertical bodies come with either spigot or threaded outlets and horizontal body versions are available in threaded only.

- Large sump outlets:

The large sump range provides a deep outlet sump for 100 and 150 mm vertical pipe connection. The outlets are threaded to 4" and 6” BSP and can be used with Harmer adaptors for connection to Cast Iron, HDPE, PVC-U and Stainless Steel pipework systems.

- Two way outlets:

Two-way outlets are unobtrusive and suitable for use in a parapet wall construction. Can be used vertically or horizontally for connecting to 50, 75 and 100 mm pipework making it suitable for use in balcony installations. A choice of flat or rectangular grate designs are available in cast iron, nickel bronze or aluminium.

- Parapet downspout:

Ideal for use with two-way outlets or for use as emergency overflow discharge points around the building façade. The push-fit design allows for easy connection and alignment of the spout to direct water away from the building facade into the external rainwater system.

Grating:

A comprehensive range of grates are available for use in different types of application including load bearing circular and square grates which are suitable for areas with vehicular access.

Low maintenance:

Cast iron is inherently durable, offers longevity over the lifetime of the building, 100% recyclable and all cast iron clamps and grates are surface treated using a sherardizing zinc coating process which provides an extremely hard wearing anti-corrosion finish. Domical grates are manufactured from UV-stable polypropylene.

General information

Material

All cast iron components are cast to material grade EN-GJL-200 to BS EN 1561, ductile iron components are cast to material grade EN GJS-450 to BS EN 1563

Specification data

Product Reference

Harmer Cast Iron Roof Outlets

Type

C200

Medium sump, vertical spigot outlet, 50 mm nominal outlet size. 1.69 L/s flow rate.

C300

Medium sump, vertical spigot outlet, 75 mm nominal outlet size. 4.97 L/s flow rate.

C400

Medium sump, vertical spigot outlet, 100 mm nominal outlet size. 4.97 L/s flow rate.

C200T

Medium sump, vertical threaded outlet, 50 mm nominal outlet size. 1.69 L/s flow rate.

C300T

Medium sump, vertical threaded outlet, 75 mm nominal outlet size. 4.97 L/s flow rate.

C400T

Medium sump, vertical threaded outlet, 100 mm nominal outlet size. 4.97 L/s flow rate.

C290T

Medium sump, horizontal threaded outlet, 50 mm nominal outlet size. 1.69 L/s flow rate.

C390T

Medium sump, horizontal threaded outlet, 75 mm nominal outlet size. 4.97 L/s flow rate.

C490T

Medium sump, horizontal threaded outlet, 100 mm nominal outlet size. 4.97 L/s flow rate.

C400LT

Large sump, vertical threaded outlet, 100 mm nominal outlet size. 8.56 L/s flow rate.

C600LT

Large sump, vertical threaded outlet, 150 mm nominal outlet size. 10.35 L/s flow rate.

CTW2/RC

Two way outlet, rectangular cast iron grate, 50 mm outlet size, 0.7 (horizontal) or 1.4 (vertical) L/s flow rate.

CTW2/RN

Two way outlet, rectangular nickel bronze grate, 50 mm outlet size, 0.7 (horizontal) or 1.4 (vertical) L/s flow rate.

CTW2/RA

Two way outlet, rectangular aluminium grate, 50 mm outlet size, 0.7 (horizontal) or 1.4 (vertical) L/s flow rate.

CTW3/RC

Two way outlet, rectangular cast iron grate, 75 mm outlet size, 0.8 (horizontal) or 2.6 (vertical) L/s flow rate.

CTW3/RN

Two way outlet, rectangular nickel bronze grate, 75 mm outlet size, 0.8 (horizontal) or 2.6 (vertical) L/s flow rate.

CTW3/RA

Two way outlet, rectangular aluminium grate, 75 mm outlet size, 0.8 (horizontal) or 2.6 (vertical) L/s flow rate.

CTW4/RC

Two way outlet, rectangular cast iron grate, 100 mm outlet size, 0.8 (horizontal) or 2.6 (vertical) L/s flow rate.

CTW4/RN

Two way outlet, rectangular nickel bronze grate, 100 mm outlet size, 0.8 (horizontal) or 2.6 (vertical) L/s flow rate.

CTW4/RA

Two way outlet, rectangular aluminium grate, 100 mm outlet size, 0.8 (horizontal) or 2.6 (vertical) L/s flow rate.

CTW2/FC, 50 mm

Two way outlet, flat grate cast iron, 50 mm outlet size, 0.7 (horizontal) or 1.4 (vertical) L/s flow rate.

CTW2/FC, 75 mm

Two way outlet, flat grate cast iron, 75 mm outlet size, 0.8 (horizontal) or 2.6 (vertical) L/s flow rate.

CTW2/FC, 100 mm

Two way outlet, flat grate cast iron, 100 mm outlet size, 0.8 (horizontal) or 2.6 (vertical) L/s flow rate.

ADS/4

Parapet downspouts, 100 mm outlet, siliconized cast aluminium LM6.

CDS/4

Parapet downspouts, 100 mm outlet, cast iron.

Grate

Manufacturer's standard – Domical grate

Circular flat grate /F

Sherardized ductile iron, 6.30 L/s flow rate (11.52 L/s for large sump).

Circular flat grate /ECD

Adjustable height grate, sherardized ductile iron, 6.30 L/s flow rate.

Square flat grate /ESD

Adjustable height grate, sherardized ductile iron, 6.30 L/s flow rate.

Square flat grate /ESS

Adjustable height grate, stainless steel, 6.30 L/s flow rate.

Square flat grate /S

For use with large sump, sherardized ductile iron, 14.56 L/s flow rate.

Variable height body

Not required

Polypropylene /D

4.97 L/s flow rate (10.35 L/s for large sump).

Sherardized ductile iron /DF

6.30 L/s flow rate (11.52 L/s for large sump).

Sherardized ductile iron /DS

For use with large sump, 14.56 L/s flow rate.

Accessories

None

235357 coupling, SML ductile iron

235358 coupling, SML ductile iron

235849 coupling, SML ductile iron

3140/100 SML duo coupling

3140/150 SML duo coupling

3140/50 SML duo coupling

3151/070075 SML adaptor

2ADP threaded spigot adaptor, 50 mm bore

3ADP threaded spigot adaptor, 75 mm bore

4ADP threaded spigot adaptor, 100 mm bore

6ADP threaded spigot adaptor, 150 mm bore

C4/GG/15 gravel guard, medium sump

150 x 200 mm.

C4/GG/20 gravel guard, medium sump

200 x 200 mm.

C4/OF overflow outlet, medium sump

200 mm x 350 mm, 92 mm internal diameter.

C4/UC underdeck clamp, medium sump

Carbon steel, 175 x 600 mm.

C4/UC/SS underdeck clamp, medium sump

Stainless steel, 175 x 600 mm.

C6/GG/15 gravel guard, large sump

150 x 305 mm.

C6/GG/20 gravel guard, large sump

200 x 305 mm.

C6/UC underdeck clamp, large sump

Carbon steel, 300 x 600 mm.

C6/UC/SS underdeck clamp, large sump

Stainless steel, 300 x 600 mm.

SP1 metal deck support plate, medium sump

335 x 490 mm.

SP2 metal deck support plate, large sump

415 x 570 mm.

Standard product features

Grate:

Domical grate provided as standard with flat grate optionally available.

Material:

All cast iron components are cast to material grade EN-GJL-200 to BS EN 1561, ductile iron components are cast to material grade EN GJS-450 to BS EN 1563.

Product Options

Grate:

- Flat grate:

For use in areas with pedestrian traffic or light vehicle traffic (excluding forklift) in commercially used premises.

- Extension piece with adjustable height grate:

For use in inverted roofs and no fines screed areas with pedestrian or vehicle traffic. Waterproofing is achieved at the outlet body flange with the extension piece allowing permeable drainage into the outlet. Height adjustable grating assembly allows use with varying thicknesses of insulation and roof finish.

- Square flat grate (with '/S' suffix, for use with large sump):

325 x 325 mm manufactured from ductile iron and has a load rating of 12.5 tonnes. For use in areas with vehicular access, such as car parks, factories and workshops. The clamping collar extends above the outlet body to accommodate adequate thickness of concrete or asphalt finish around the grate surround. The clamping collar can also be rotated to suit paving alignment.

Variable height body:

Double flange variable height body suitable for use in loadbearing warm roof applications. Double flange construction allows fine adjustment for use with insulation thickness between 80–100 mm.

Accessories:

- Gravel guard:

Manufactured from stainless steel, the gravel guard is used with domical grates on roofs with gravel finish to prevent ingress of insulation and gravel into the outlet. Other lengths are available to order.

- Underdeck clamp:

The Underdeck Clamp is used to secure cast iron outlet body to roof deck (cannot be used with horizontal outlet).

- Overflow outlet:

For use where overflow outlets are required. The overflow assembly simply bolts onto the rainwater outlet where the clamp normally sits. Manufactured from ABS.

- Threaded spigot adaptors:

Have been designed to facilitate the connection of Harmer roof cast iron rainwater outlets to PVC pipework. Manufactured from ABS plastic and supplied in 400 mm lengths. Suitable for direct connection to cast iron pipework to BS EN 877 and BS 416.

- Couplings:

Consult manufacturer's literature for correct pipe connection.

Literature
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