•  English (US)
  • German
  • French
  • Italian
  • Spanish
  • Arabic
Request a quote Enquire now
Subscribe to our newsletter
  • Industry Use
    • Civil & Pipelines
    • Soil Stabilization & Foundation
    • Oil & Gas
    • Waterwell & Environmental
  • Product Range
    • HDX / HDXT Series
    • HD Series
    • GT Series
    • 380 Series
    • 155 Series
    • Installation Tools (required for 155 / 380 Series only)
  • Stockist
  • Project Brief
  • Downloads
  • Latest News
    • Subscribe to our newsletter
    • Past Newsletters
  • About Us
  • Contact Us
    • General Enquiries
    • Request a quote
    • Credit Application

Nowra Wastewater Treatment Plant

Project: Nowra Wastewater Treatment Plant, Southern Incoming Mains – Stage 1 Terara NSW.

Client: Shoalhaven City Council

Carrier Size: 2x DN450 HDPE x DN560 HDPE

Spacer Model: HDX 38

Kwik-ZIP HDX38 casing spacers were utilised on three 60m sections of the new parallel wastewater pressure mains to the new Nowra Wastewater Treatment Plant at Terara, NSW.

The 3 new cased crossings run under the full road reserve for the proposed future East Nowra Sub-Arterial Link Road (ENSA) project which is still in the early planning stage.

kwik-ZIP’s HDX 38 spacers were installed at 2m intervals to support the carrier pipes during installation and protect them from being damaged.

As the cased pipelines were not being grouted the HDX38 spacers were required to support the full weight of the pipe and water for the life of the installation.


Kwik-ZIP’s spacers have no metal parts and are made from Kwik-ZIP’s engineered thermoplastic blend – a high-grade thermoplastic that is flexible, extremely tough and has a low coefficient of friction. The spacers simple and efficient installation process require no special tools.

Kwik-ZIP HDX Spacers are approved by WSAA and meet the requirements of their Product Specification PS-324 Casing Spacers.

“Kwik-ZIP’s customer service & technical support was excellent – the spacers were supplied at very short notice from their Sydney warehouse and the installation crews found them quick & easy to install” – Rod Dean -Engineering Designer – Shoalhaven Water

Return to view more project briefs

Interested in our products? Request a quote or Enquire now

Our Casing Spacer and Centralizer Systems

  • HDX / HDXT Casing Spacers
    FOR Medium to Heavy Weight Pipe in Cased Crossings
    View product information
  • HD Series Casing Spacers
    FOR Trenchless and Cased Crossings, Slip Lining
    View product information
  • GT Series Centralizers
    FOR Rock Bolts, Soil Nails, Anchors, Small Dia Drop Pipe
    View product information
  • 380 Series Centralizers
    FOR Gravel Packed Screens, Casing, Drop Pipe
    View product information
  • 155 Series Centralizers
    FOR Pump Installation and Anchors and Sheathing
    View product information
  • Tools
    FOR 155 & 380 series
    View product information

FBA Emblem
kwik-ZIP products are protected by various Australian, US and Foreign Patents. Quality Assured to ISO 9001

Product Range

  • HDX Series Casing Spacers
  • HD Series Centralizers and Casing Spacers
  • GT Series Centralizers
  • 380 Series Centralizers
  • 155 Series Centralizers
  • Installation Tools (required for 155 / 380 Series only)

Subscribe to our newsletter

Social Media

Construction Products Information

  • Company Brochure
  • HDX Brochure
  • HD Series Trenchless Flyer
  • HD Series Waterwell Flyer
  • GT Series Ground Engineering Flyer
  • HD Series Info Sheet
  • 155 and 380 Series Info Sheet
  • GT Series Info Sheet

Installation guides

  • Installation Guide for the 155 and 380 Series
  • Installation Guide for the HD Series
  • Installation Guide for HDX
kwik-ZIP | Centralizers and Casing Spacer Systems
Copyright © 2022 All Rights Reserved
Proudly created by Brandicoot