NBS Source

Description

Alumasc Harmer Roof AV is an economic, general purpose range of outlets that provides anti-vortex performance. Harmer Roof AV incorporates a patented baffle within the grating, to prevent water swirl and air entrapment, enabling the outlet to drain at 90% of its pipe capacity.

The Harmer AV 45 degree screw roof outlet is for flat roof structures using in situ cast concrete, timber or lightweight metal deck construction. It directly connects to cast iron, HDPE and PVC pipework by means of a Harmer Roof screw threaded adaptor and appropriate coupling.

General information

Material

Aluminium: Cast in grade LM6 aluminium silicon alloy

Gunmetal: Cast in 85/5/5/5 leaded gunmetal

CAWS

R10/26 Proprietary rainwater outlets

R10/365 Proprietary rainwater outlets

Product range

Roof outlets / Harmer AV outlets

Specification data

Product Reference

Harmer AV 45 degree Screw roof outlet

Type

245T, aluminium body, dome grating, 50 mm pipe

245T/F, aluminium body, flat grating, 50 mm pipe

245T/F/GM, gunmetal body, flat grating, 50 mm pipe

245T/GM, gunmetal body, dome grating, 50 mm pipe

345T, aluminium body, dome grating, 75 mm pipe

345T/F, aluminium body, flat grating, 75 mm pipe

345T/F/GM, gunmetal body, flat grating, 75 mm pipe

345T/GM, gunmetal body, dome grating, 75 mm pipe

445T, aluminium body, dome grating, 100 mm pipe

445T/F, aluminium body, flat grating, 100 mm pipe

445T/F/GM, gunmetal body, flat grating, 100 mm pipe

445T/GM, gunmetal body, dome grating, 100 mm pipe

As drawing ___

Contractor's choice

Accessories

-

Grate extension piece

Not required

23 EP, aluminium, 150 mm diameter

23 EP/GM, gunmetal, 150 mm diameter

46 EP, aluminium, 222 mm diameter

46 EP/GM, gunmetal, 222 mm diameter

As drawing ___

Contractor's choice

Terrace grate

Not required

23 TG, aluminium

Use with 150 mm diameter grate extension to raise terrace grate to level of paved surface.

23 TG/GM, gunmetal

Use with 150 mm diameter grate extension to raise terrace grate to level of paved surface.

46 TG, aluminium

Use with 222 mm diameter grate extension to raise terrace grate to level of paved surface.

46 TG/GM, gunmetal

Use with 222 mm diameter grate extension to raise terrace grate to level of paved surface.

As drawing ___

Contractor's choice

Threaded spigot adaptor

Not required

2ADP, 55 mm pipe diameter

3ADP, 83 mm pipe diameter

4ADP, 110 mm pipe diameter

6ADP, 160 mm pipe diameter

As drawing ___

Contractor's choice

Metal deck support plate

Not required

SP1, 50/75 mm pipe diameter

SP2, 100/150 mm pipe diameter

As drawing ___

Contractor's choice

Standard product features

Material:

  • Aluminium: Cast in grade LM6 aluminium silicon alloy.
  • Gunmetal: Cast in 85/5/5/5 leaded gunmetal.

Diameter (visible):

  • 245T range: 229 mm.
  • 345T range: 229 mm.
  • 445T range: 305 mm.

Pipe diameter:

  • 245T range: 50 mm.
  • 345T range: 75 mm.
  • 445T range: 100 mm.

Flow rate:

  • 245T range: 1.69 L/s.
  • 345T range: 4.97 L/s.
  • 445T range: 10.71 L/s.

Product Options

Accessories:

– Grate extension piece:

  • For applications where it is necessary to raise the level of the grate above the body of the outlet such as in inverted roof construction. Extension pieces can be cut down if necessary to suit thickness of paving or tiles.

– Terrace grate:

  • Designed for installation in terrace tiles or brick paviors. Used in connection with grate extension pieces which raise the terrace grate to the level of the paved surface. Adjustable through 90° to suit surrounding paving prior to final tightening.

– Threaded spigot adaptor:

  • ABS plastics adaptor to facilitate the connection of Harmer Roof AV and Detail screw threaded metal rainwater outlets to PVC pipework. The adaptor is suitable for connection with all types of pipe systems.

– Metal deck support plate:

  • Recommended for use where Harmer Roof metal and insulated outlets are installed in metal deck roof construction. Designed to provide a secure and stable junction between roof deck and rainwater outlet. Manufactured from 1.5 mm (16 gauge) steel sheet, finished in red oxide.

Literature

Harmer Roof Drainage

Harmer Roof Drainage

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