Guardian™ PVC and CPVC

Pressure and drainage double containment systems for use with a wide range of acids, alcohols, salts and halogens.

  • Full product range
  • Available in tough industrial grade PVC and even tougher high temperature CPVC
  • Patented Centra-Lock design reduces the required joints by 40 - 60%

Guardian systems have been the benchmark in pressure and drainage double containment. Guardian systems are available in tough industrial grade PVC and even tougher high temperature CPVC. For instant leak detection of overhead piping, Clear- Guard clear PVC containment pipe is also available. Guardian’s patented Centra-Lock design reduces the required joints by 40 - 60%.



Guardian™ systems are available in tough industrial grade Xirtec® PVC and even tougher Xirtec® high-temperature CPVC. IPEX maintains strict control over resin formulation, as well as the dimensional compatibility of all components. The result is a superior system that is unmatched for safety and reliability.

In addition, the Guardian™ system’s pretested modular components are extremely easy to install. Guardian™’s patented Centra-Lock™ design requires 40% fewer joints, minimizing the potential for failures and leaks, while dramatically reducing installation, maintenance and repair costs.

Material                Carrier              Containment

Xirtec PVC            1/2" - 12"          2" - 18"

Xirtec CPVC          1/2" - 12"          2" - 18"

Clear-Guard PVC      n/a                   2" - 8"

Larger sizes are available


Material Selection

Xirtec®140 PVC and Corzan® CPVC are the chosen materials for the Guardian systems. IPEX controls not only the design and fabrication of the systems, but also the blending of the PVC resin, the extrusion and injection molding of most components. This unparalleled consistency of quality and resin as well as dimensional compatibility results in superior systems that are unmatched in the industry. Clear-Guard utilizes a failsafe, fully pressure rated clear PVC that uses a solvent cement jointing method identical to traditional vinyl pressure pipe. This eliminates the need for expensive caulking guns and epoxy adhesive for assembly. Clear-Guard can be used in conjunction with both Schedule 40 and 80 Xirtec140 PVC or Corzan CPVC primary pipe.


Guardian and Clear-Guard systems offer a complete selection of pretested modular components which are extremely easy to install. Our Centra-lokTM patented design allows IPEX to offer vinyl systems which average up to 60% fewer overall joints and up to 10% fewer field joints. Since joints are always the most common source of premature failures and leaks, it is easy to realize the immense impact the Centra-lok design has on maintenance, repair and installation costs. The patented ingenuity and simplicity of the Centra-lok design also reduces the purchase cost of IPEX systems, making Guardian and Clear-Guard the industry’s most cost-effective vinyl system. As with all our containment systems, the IPEX patented Centra-Guard™ point-of-collection or cable leak detection systems are also available.


Each contained piping system shall consist of Xirtec®140 PVC primary piping system supported within a Xirtec®140 PVC secondary containment housing. Carrier fitting sizes 1/2" through 4" will use Centra-Lok [U.S. Patent No. 5,398,973] molded supports minimizing the number of field (factory assembled) fitting joints. Carrier sizes 6" and larger will use IPEX standard polypropylene fitting discs to support and centralize. Each system shall be provided with suitable drains and vents and be designed to provide complete drainage of both the primary and secondary containment piping. Interstitial supporting devices shall be made from Polypropylene Centra-Guide supports and shall be provided within the secondary containment pipe, and shall be designed to allow continuous drainage in the annular space to the drain points. Drain fittings shall be designed to allow a valve attachment to be made so that the secondary containment compartment may be readily drained and manually checked for leaks.


GuardianTM Double Containment at CAES Facility
IPEX Guardian Double Containment Piping System ensures safe transport of untreated frac water at CAES facility.
IPEX Double Containment PVC System Protects Chemical Lines at North Toronto Wastewater Treatment Plant
To ensure safety and reliability, the systems that transport the sodium hypochlorite and sodium bisulphate are double contained to prevent any possible leaks or spills.
IPEX Loves New York City
IPEX supplied over 17 miles of PVC and CPVC Double Containment Piping Systems: GuardianTM and CustomGuard®.
Baltimore’s Patapsco Wastewater Treatment Plant Needs Double Containment Pipe
IPEX GuardianTM and CustomGuard® double containment systems were used to guarantee durability and the secure transport of potentially dangerous chemicals throughout the wastewater treatment plant.
IPEX Piping Systems - Sugar Land, TX
IPEX Thermoplastic Piping Systems delivers potable water and conserves ground water.
Guardian Double Containment at Lakeview Wastewater Treatment Plant
IPEX Guards 137 Million Gallons a Day at the Lakeview Wastewater Treatment Plant.
Dallas´ Elm Fork Water Treatment Plant is Fit for the Future with IPEX Piping Systems
Fortunately, piping systems from IPEX provided the quality, breadth of product and available options to effectively meet the plant’s day-to-day operations.