Hot Corrosive Liquids - CPVC

If you’re moving hot, aggressive or corrosive fluids and need a system that’s dependable, long-lasting and cost-effective, Corzan CPVC (PVC-C) is a proven industrial solution. At Pipestock, we supply the complete Corzan CPVC pipework system - pipe, fittings, valves and accessories - so you can design, install and maintain your system from one trusted source.

Manufactured by Durapipe UK, Corzan CPVC is a precision-matched, WRAS-approved system engineered to outperform metal in demanding chemical and high-temperature environments.

CPVC (Chlorinated Polyvinyl Chloride) is produced by chlorinating PVC resin, which significantly increases temperature capability and chemical resistance. The result is a lightweight, corrosion-resistant material that handles hot acids, alkalis and industrial effluents under pressure - without the scaling, corrosion or maintenance issues associated with metal pipework.

• Size range: 16mm to 160mm
• Operating temperature: 5°C to 95°C
• Pressure rating: Up to 16 bar
• Approvals: WRAS approved, WRc tested
• Quality system: Manufactured to BS EN ISO 9001
• Jointing method: Solvent welding (PVC-C solvent cement)
• Bore: Smooth internal surface for maximum flow
• Resistance: Excellent chemical, corrosion, abrasion and erosion resistance
• Suitable media includes:
  • Acids, alkalis, demineralised water, cooling water, dyes, flocculants, soaps, pulps, treated and untreated effluent, and general chemical dosing fluids

✔ Built for Hot, Corrosive Chemicals

Corzan’s balance of chemical resistance, pressure capability and temperature performance makes it ideal for harsh industrial environments where metals corrode, scale or fail prematurely.

✔ Smooth Bore = Better Flow

Low friction reduces pressure loss, inhibits scale build-up and can lower pump energy consumption over the life of the system.

✔ Lightweight & Easy to Install

At roughly half the weight of copper and one-sixth the weight of steel, Corzan CPVC is easier to handle on site, reducing installation time and labour costs.

✔ Non-Toxic & Taint-Free

Free from harmful metallic stabilisers, Corzan is WRc listed and suitable for potable water and sensitive process fluids where purity matters.

✔ Long Service Life, Low Maintenance

Excellent resistance to corrosion, abrasion and erosion results in reduced downtime and lower whole-life costs compared to traditional materials.

Corzan CPVC pipework is widely used across:

• Chemical processing & dosing systems
• Industrial waste treatment
• Metal surface treatment & finishing
• Hot & cold industrial water services
• Pulp & paper production
• Food & beverage processing (subject to application testing)
• Cooling water and process water systems

Every Corzan CPVC component is subjected to a rigorous quality control programme, including:

• Dimensional and surface finish checks
• Long and short-term hydrostatic testing
• Impact resistance testing
• Heat reversion analysis

From an environmental perspective, Corzan offers a favourable eco-balance. Its durability, low petroleum content, energy-efficient manufacturing process and long service life help minimise resource use and waste over time.

• Pipe support: Use clips that allow free axial movement while providing lateral restraint (e.g. Cobra pipe clips)
• Heavy equipment: Valves, filters and pumps should be independently supported
• Buried installations: Use level trench bases, gravel bedding and proper compaction before and after testing
• Storage: Store flat, avoid excessive stacking heights, and protect from prolonged UV exposure
• Identification: Do not apply self-adhesive labels directly - use a barrier layer to prevent stress cracking
• Pressure testing: Never use pressurised gas. Always hydrostatically test with personnel standing clear

Corzan CPVC pipe forms the backbone of the system, offering consistent bore, excellent pressure performance and thermal stability for hot and corrosive media.

View CPVC Pipe here.

A comprehensive range of solvent-weld fittings allows for flexible system design, including sockets, elbows, tees, reducers, unions, BSP transitions and stub flanges. Reinforced BSP fittings provide secure connections to metal equipment where required.

• Sockets, elbows & tees
• Reinforced BSP fittings
• Unions & reducing bushes
• Stub flanges & end caps

View CPVC Pipe Fittings here.

Designed for precise flow control in aggressive environments, the Corzan valve range includes ball valves (EPDM & FPM), diaphragm valves, butterfly valves and Y-strainers - all engineered to match the system’s pressure and temperature capabilities.

View CPVC Valves & Strainers here.

Complete your installation with purpose-designed accessories, including PVC-C solvent cement, eco cleaner, preparation tools, backing rings, gaskets, service plugs and pipe clips - everything needed for a professional, compliant installation.

View CPVC Accessories here.

Solvent cement welding is the recommended jointing method for Corzan CPVC systems. The cement chemically softens the pipe and fitting surfaces, forming a strong, long-lasting bond when properly prepared.

1. Cut the pipe clean and square

• Use a saw or circular plastic pipe cutters

2. Remove burrs and swarf

• File a lead chamfer (15°–30°, approx. 3mm) to prevent cement being scraped away during assembly

3. Mark insertion depth

• Mark the pipe to confirm full socket penetration after assembly

4. Abrade the pipe end

• Use clean, coarse emery cloth over a length equal to the fitting socket depth
• Do not over-abrade - Corzan is designed for an interference fit

5. Abrade the fitting socket

• Lightly roughen the internal surface

6. Clean thoroughly

• Use a lint-free cloth moistened with Durapipe ECO Cleaner

7. Select the correct solvent cement

• Always use Durapipe Corzan solvent cement and read the tin label before use

8. Apply solvent cement

• Use a clean brush around half the pipe diameter
• Apply to both pipe and fitting with longitudinal strokes
• Ensure surfaces are fully coated and cement is still liquid

9. Assemble immediately

• Push pipe fully home without twisting
• Hold in place for:
  • ~10 seconds (16mm)
  • Up to ~45 seconds (160mm)
• A neat bead of cement should appear around the joint edge

10. Remove excess cement

• Wipe away surplus cement from the outside only

11. Seal containers

• Replace lids on cement tins promptly

12. Clean tools

• Clean brushes using ECO Cleaner