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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 Retro Gulley roof outlet is designed to fit within the existing outlet and pipework of a roof that is being upgraded, providing a cost-effective and efficient solution to flat roof upgrading. May be used for any type of warm roof refurbishment.

General information
Material

Cast in grade LM6 aluminium silicon alloy

Uniclass 2015
Pr_65_50_35_37 Gravity rainwater outletsPrimary
CAWS

R10/26 Rainwater outlets

R10/365 Proprietary rainwater outlets

Specification data - Gravity rainwater outlets
Product Reference

Harmer AV Retro Gulley roof outlet

Type

RAV75, dome grating, 75 mm pipe

RAV75/F, flat grating, 75 mm pipe

For 71.5–78.5 mm existing pipe (internal diameter).

RAV100, dome grating, 100 mm pipe

For 71.5–78.5 mm existing pipe (internal diameter).

RAV100/F, flat grating, 100 mm pipe

For 97–104 mm existing pipe (internal diameter).

RAV150, dome grating, 150 mm pipe

For 142–154 mm existing pipe (internal diameter).

RAV150/F, flat grating, 150 mm pipe

For 142–154 mm existing pipe (internal diameter).

As drawing ___

Contractor's choice

Accessories -
Grate extension piece

Not required

23 EP, aluminium, 150 mm diameter

46 EP, aluminium, 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.

46 TG, aluminium

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

As drawing ___

Contractor's choice

Standard product features

Material:

Cast in grade LM6 aluminium silicon alloy.

Diameter (visible):

304 mm.

Pipe diameter:

  • RAV75 range: 75 mm.
  • RAV100 range: 100 mm.
  • RAV150 range: 150 mm.

Flow rate:

  • RAV75 range: 4.63 L/s.
  • RAV100 range: 5.53 L/s.
  • RAV150 range: 5.53 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.

Literature
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