About Astral CPVC PRO Plumbing Pipes and Fittings
Astral CPVC PRO is constructed with a speciality plastic called Chlorinated Poly Vinyl Chloride. This range of CPVC pipes and fittings is excellent for hot and cold plumbing systems.
- The formulation compound of Astral CPVC PRO pipes and fittings has been designed by our Research and Development team.
- The R&D approach is backed by 19 years of experience in manufacturing CPVC pipes and fittings.
- The CPVC compound shall meet cell class DP 110-2-3-2 as per IS:15778 and a maximum service temperature of up to 93°C.
- It offers a unique combination of exceptional impact resistance to our CPVC pipes, without compromising pressure-bearing capacity, tensile strength, or Vicat softening temperature.
- This compound ensures the utmost reliability and trouble-free service that eliminates common risks associated with cracking, damage, and challenges during the handling, storage, and installation of CPVC pipes using CPVC fittings.
The Astral CPVC PRO pipes are produced in copper tube size (CTS) from 15 mm (1⁄2”) to 50 mm (2”) with two different standard dimensional ratios – SDR 11 and SDR 13.5 (Class 1 & Class 2 respectively as per IS:15778).
- The CPVC fittings are produced as per SDR 11. The pipes and fittings in the SDR 11 class also comply with ASTM standards
- All Astral CPVC SDR 11 and SDR 13.5 pipes are made from identical CPVC compound materials having the same physical properties.
- The CPVC fittings are manufactured from a compound material, which meets all the requirements as per ASTM standards.
- Apart from having the same physical properties, the SDR 11 and SDR 13.5 have different wall thicknesses. Therefore, at any given temperature, they have different pressure ratings. E.g.
Astral CPVC PRO: The Ideal Choice for Hot and Cold Potable Water Distribution
- Raw Material Used in CPVC Pipes and Fittings
Astral manufactures CPVC pipes and CPVC fittings using a specially formulated CPVC compound that is a mix of imported CPVC resin and various additives, such as impact modifiers, lubricants, UV stabilisers, and more. Our R&D facility carefully designed this range ensuring it possesses excellent properties such as dynamic thermal stability, fusion, torque, and other rheological characteristics.
Astral CPVC PRO pipes have obtained certification from the National Sanitation Foundation (NSF) International, a reputable independent organisation dedicated to public health and safety. To achieve this certification for our CPVC pipes and CPVC fittings, Astral Limited submitted product samples to NSF for extensive testing according to recognised standards.
We agreed to undergo unannounced audits of the manufacturing facilities and periodic retesting to ensure ongoing compliance with the established standards. You can locate Astral CPVC PRO in the NSF water listings by visiting http://www.nsf.org/certified-products-systems.
Key Properties of Astral CPVC PRO
- Enhanced Corrosion Resistance
The Astral CPVC PRO pipe exhibits exceptional corrosion resistance and eliminates concerns about purity issues that may arise from the corrosion of metal pipes or soldered joints. With Astral CPVC pipes and fittings, the purity of water remains unaffected and preserved.
- Simplified Plumbing Process
Our CPVC fittings employ a straightforward solvent cement jointing method which requires basic and cost-effective tools. This system eliminates the need for an electrical source.
The smooth internal surface of CPVC pipes significantly minimises the accumulation of bacteria compared to alternative piping materials. As a result, water quality remains uncompromised, preventing contamination, unpleasant odours, bad taste, and colour changes.
Astral CPVC pipes and CPVC fittings remain unaffected by chlorine found in potable water. This ensures the pipe’s integrity and prevents polymer chain breakdown and potential leaks.
- Resistance to Scale, Pit, and Leech Formation
Even when subjected to aggressive conditions over an extended period, Astral CPVC PRO pipe resists corrosion. It withstands low pH water, coastal salt exposure, air exposure, and corrosive soils, maintaining its solid structure while preserving its full water-carrying capacity.
Astral CPVC pipes and fittings are suitable for hot and cold water applications. It can withstand high temperatures of up to 93°C. Many solar, electric, and gas water heaters utilise CPVC piping systems to enhance heat efficiency and reduce installation costs.
- Minimal Thermal Expansion
The Astral CPVC PRO pipes exhibit lower thermal expansion. This means they expand less when hot water is running through them. Consequently, the unappealing “looping” of the pipe is reduced to ensure a neater and more efficient plumbing system by using CPVC fittings.
With a Limiting Oxygen Index (LOI) of 60, the CPVC material of our Astral CPVC PRO pipes does not support combustion in the air. It does not produce flaming drips, increase the fire load, or promote extensive flame spread or smoke generation.
- Rigid and Durable Material
Astral CPVC pipes and CPVC fittings possess superior strength, which results in fewer hangers and supports required and eliminates the need for unsightly looping of the pipe. Its high-pressure bearing capability allows for the same flow rate using a smaller pipe size and its high UV resistance contributes to a lifespan exceeding 50 years.
CPVC plumbing systems, including Astral CPVC PRO pipes and CPVC fittings are approved for use with potable water in a wide range of countries worldwide, such as the USA, UK, Canada, Germany, France, the Netherlands, the Middle East, and Africa including others.
Precautions When Using CPVC Pipes and CPVC Fittings in Solar Applications
Due to the high temperatures generated by thermal radiation steam, it is important to avoid connecting CPVC pipes or fittings directly to the outlet of a water heater. Extreme heat exposure can result in distortion and deformation of the pipes.
To ensure the safe and optimal use of Astral CPVC PRO pipes and fittings in solar applications, it is essential to adhere to the following guidelines:
Dos:
- Connect a Galvanised Iron (GI) pipe, measuring 1 metre in length, to the outlet of the solar water heater before attaching CPVC pipes and fittings.
- Implement expansion loops for exposed pipes at intervals of every 9-12 feet along the pipe run.
- Always provide appropriate support at specified distances to secure exposed pipes in place.
DON’Ts:
- Never connect the CPVC pipes directly to the outlet of a solar water heater. This is because the excessive heat generated by thermal radiation steam can cause distortion and deformation of the CPVC products.
- Avoid using CPVC pipes and CPVC fittings without incorporating expansion loops or offsets.
- Do not clamp pipes near the expansion loops or offsets, as this can hinder their proper functioning.
By following these guidelines to utilise Astral CPVC PRO pipes and fittings, you can ensure the integrity and longevity of your solar water heating system.
Installation Procedure
Pipe Cutting
To achieve a precise and tidy joint, measure the length of the pipe accurately and make a small marking. Ensure that the CPVC pipes and fittings are compatible in size. To cut the CPVC pipes, you can use a wheel-type plastic pipe cutter or a hacksaw blade.
Deburring/Beveling
To facilitate proper contact between the tube and CPVC fittings during assembly, it is necessary to remove any burrs and filings from both the outside and inside of the pipes. This can be accomplished using a debarking tool, pocket knife, or file. Additionally, create a slight bevel on the end of the tubing that will help insert the tubing into the fitting socket smoothly.
Fitting Preparation
Before proceeding with the assembly, prepare the CPVC fittings appropriately. Use a clean and dry rag to wipe dirt or moisture from the fitting sockets and tubing end. To ensure a secure connection, the tubing should enter the fitting socket to cover anywhere between ⅓ and ⅔ depth of the fitting socket.
Solvent Cement Application
To avoid joint failure with CPVC fittings, use CPVC cement or an all-purpose cement that adheres to the ASTM F-493 standard. When applying the cement, ensure a generous and even coat on the CPVC pipes’ end. Similarly, use the same applicator without additional cement to apply a thin coat inside the fitting socket. Do not use excessive cement because it can potentially lead to clogged waterways.
Assembly
Immediately after applying the cement, insert the tubing into the fitting socket. As you insert the tube, rotate it ¼ to ½ turn to ensure an even distribution of the cement within the joint. Align the fittings properly to achieve an accurate connection. Hold the assembly for approximately 10 seconds and allow the joint to set up.
Set and Cure
Curing time for CPVC pipes is shorter in drier environments, for smaller sizes, and at higher temperatures. Typically, it takes a joint around 10 to 20 minutes to cure fully.
Note: For sizes larger than 65 mm (2½”), it is necessary to use IPS 70 primer before applying the solvent cement. The primer serves to penetrate and soften the surfaces to ensure proper fusion in various weather conditions. Correct usage of the primer prepares the surfaces for a strong and reliable connection.
