Derwent manufactures Fire Hydrants for the Australian and New Zealand Water Markets.   The Hydrants are manufactured in accordance with the relevant standard for the area. Please refer to your local Water Authority to see if the Derwent product is approved in your area.

Spring Hydrants

 

Derwent Spring Hydrants are manufactured to AS 3952-2002 and are available for both water and re-use water applications.  

 

Sizes:                                      DN 80 and DN100.

StandardsMark License:  SMK40418.

Features:

  • Ductile Iron Body and top to AS 1831

  • Compression Spring 316 S/S

  • Fusion coated for corrosion protection

  • Aluminium Bronze Dome t

  • Anti-Gall Coated 316S/S Nuts and Bolts

Applications:

Spring Hydrants are used for either potable (Blue top) or reuse (Lilac top).

SWAB Hydrants are also available with removable internals to allow main to be swabbed through the Hydrant. (As shown in cross section)

SWAB - Spring Hydrants

 
SWAB.jpg

Derwent SWAB Hydrants are manufactured to AS 3952-2002 and are available for both water and re-use water applications.  

 

Sizes:                                      DN100.

StandardsMark License:  SMK40418.

Approvals:                            SEQ

Features:

  • Ductile Iron Body and top to AS 1831

  • Compression Spring 316 S/S

  • Fusion coated for corrosion protection

  • Brass Dome to AS 1568

  • Anti-Gall Coated 316S/S Nuts and Bolts

Applications:

SWAB Spring Hydrants are used where swabbing of the line is required. The top of the Spring Hydrant and internals can be removed to allow for the SWAB to pass through the hydrant.

SWAB Base.jpg
SWAB Internal.jpg

New Zealand Fire Hydrant - Tall & Squat PN16

 

Derwent Industries supplies both Tall and Squat New Zealand Hydrants. The Hydrants are manufactured to NZS 4522:2010. The Underground Fire Hydrants are available in both Tall and Squat version.

 

StandardsMark License:  SMK41119.

Approvals:                            Watercare - Auckland, Christchurch

Features:

  • Ductile Iron Body and top to AS 1831

  • Bolts, Nuts and Washers - 316 S/S

  • Fusion coated for corrosion protection

  • Tall and Squat Versions - (Frost Plug optional)

  • Anti-Gall Coated 316S/S Nuts and Bolts

Applications:

The Derwent Industries Fire Hydrants are for use with either 
Potable Water or Reuse Water for fire protection.

Brochure