KMLClassic CPVC Plumbing System
CHLORINATED POLY VINYL CHLORIDE (CPVC) Pipes and Fittings, under the brand name KML Classic, are manufactured at our state-of-the-art ISO 9001:2008 certified facility in Tumkur, Karnataka—one of the largest manufacturing hubs for CPVC pipe and fittings in India. These high-performance products are ideal for residential and commercial hot and cold potable water distribution systems. Our CPVC plumbing pipes are made using advanced Japanese resin and technology to ensure exceptional durability and quality. The compounds used for extrusion meet ASTM Class 23447B requirements as defined in ASTM Specification D1784 and can withstand temperatures up to 93°C. Additionally, our pipes proudly carry the BIS marking (IS: 15778) and meet ASTM standards including ASTM D1784 Class 23447 B, ASTM D2846 for hot and cold water systems, ASTM F441 for higher diameters in Schedule 40 & 80, ASTM F439 for fittings as per Schedule 80, and ASTM F493 for solvent cement.
The CPVC plumbing system is approved for potable water use across multiple countries like the USA, UK, Canada, Germany, France, The Netherlands, and the Middle East. Known for their longevity, our CPVC plumbing pipes and fittings have a lifespan of over 50 years after installation.
CPVC pipes are used for hot and cold potable water flow in Residential Buildings, Commercial Buildings, Hotels, Educational Institutions, Swimming Pools etc. that require hygienic and uncontaminated supply of water. Because of better chemical and heat resistant properties when compared to other thermoplastic materials, they can be used in Chemical Factories & for other Industrial requirements too.
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Long Service Life CPVC Pipes and Fittings have a natural immunity to scaling, corrosion, and microbiologically influenced corrosion. It has a general life expectancy of 50 years & over a long, low-maintenance service life as compared to traditional metallic systems. |
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High Flow Rate The pipes have a higher flow rate due to the pipes being smoother & having better friction resistance properties. |
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Easy Handling & Installation Being light in weight, CPVC piping systems are easier to handle and install. Fabrication is quick, simple, and clean as there is no need for a soldering torch or heavy equipment. Installation is done by solvent cement joining process which is quick and leak-proof if properly done. |
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Flame & Smoke Resistant CPVC Pipes & Fittings have better Flame & Smoke resistant characteristics when compared to other non-metallic piping options. They have a very high ash-ignition temperature and are not combustible as they do not sustain burning. |
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Heat & Pressure Resistant Because of its high heat & pressure resistant properties, CPVC Pipes are the preferred choice for Hot & Cold water plumbing in Residential & Commercial Buildings as well as in transporting of hot & pressurized water for industrial usage. |
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Chemical Resistant Because of its high heat & pressure resistant properties, CPVC Pipes are the preferred choice for Hot & Cold water plumbing in Residential & Commercial Buildings as well as in transporting of hot & pressurized water for industrial usage. |
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Low Thermal Expansion & Conductivity CPVC has lower Thermal Expansion & Conductivity as compared to other thermoplastics. Therefore, distortion of pipelines due to flow of hot fluids & thus leading to looping is reduced. It is also more energy efficient as there is much lesser heat loss as compared to other materials, especially metal, thus exhibiting better insulation properties. |
Cutting the Pipe |
Measure the required length of pipes & cut it square with a hand saw using a suitable guide or a pipe cutter in order to make a proper and neat joint. |
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Joint Preparation |
Chamfer pipe end & remove burrs from inside and outside of the pipe end with a chamfering-deburring tool or with a knife, file or abrasive paper. |
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Test Dry fit of the Joint |
Insert the pipe into the fitting and check that the interference occurs about 1⁄3rd to 2⁄3rd of the socket depth. Too tight or too loose a fitment may lead to leakage & should be avoided. |
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Cleaning |
Remove any dirt, moisture or grease from the pipe and fitting sockets with a clean, dry rag. |
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Application of Solvent Cement |
While making a joint, apply solvent cement lightly, but uniformly, to the inside of socket and outside of the pipe end, with a nylon brush or suitable applicator. Apply a second coat of solvent cement to the pipe end. Application of solvent cement should be quick to prevent drying and should completely cover all jointing surface area of the pipe and fitting. Do not apply excessive cement in bell socket. |
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Assembly of Joint |
Immediately after applying the last coat of solvent cement to the pipe and while cement is still fluid or wet (within 10 - 20 second), forcefully bottom the male end of the pipe in the socket, giving the pipe or fitting ¼th turn (but not after pipe is bottomed) to distribute the solvent cement evenly. Remove excess cement from the pipe at the end of fitting socket. The joint must not be disturbed immediately after cementing, so that joint can properly cure. |
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Curing |
Allow the solvent cement sufficient time to set & the joint to cure, before applying water pressure. Curing time depends upon factors like temperature, humidity etc. |
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Safety Precautions |
Avoid prolonged breathing of solvent vapours while installing. Always carry out the installation procedures using solvent cement in a well ventilated area. Incase of an enclosed area, use of artificial means of ventilation, like an Exhaust Fan etc., is a good practice. Solvent Cement is a highly inflammable substance and as such, should be kept away from sources of ignition like heat, sparks and open flame at all times. It is advisable to have proper eye protection while handling solvent cement since it is an eye irritant and any eye contact due to splashing can cause an injury. In case of eye contact, flush with plenty of water for 15 minutes and visit a doctor. It also advisable to wear proper gloves while working with solvent cement to avoid skin contact. Usage of rags or bare hands for application of solvent cement is not recommended. Always use a proper applicator for application of solvent cement. Dispose of used applicators or rags, used for wiping excess solvent cement or those used to clean spillage into a proper waste bin or receptacle as it is a flammable hazard. |
PROPERTY |
TEST |
CONDITION |
ENGLISH UNITS |
SI UNITS |
|---|---|---|---|---|
GENERAL |
||||
• Specific Gravity
• Water Absorption
• Rockwell Hardness |
ASTM D792
ASTM D570
ASTM D785 |
73°F / 23°C
73°F / 23°C 73°F / 23°C |
1.55 g/cm3
+0.03% 119 |
1.55 g/cm3
+0.03% |
MECHANICAL |
||||
• Izod Impact |
ASTM D256 |
73°F / 23°C |
1.5 ft Ibs/in o.n |
80 J/m o.n. |
THERMAL |
||||
• Coefficient of Thermal |
ASTM D696
ASTM C177 |
73°F / 23°C |
3.4x10 5 in/in/°F
0.95 BTU in/hr/ft2/°F |
6.3x10 5 m/m/K
0.14 Wm/K/m 2 |
FLAMMABILITY |
||||
• Flammability Rating |
UL 94 |
0.062 in/0.157 cm |
V 0, 5VB, 5VA |
|
Tensile Strengh |
Bacterial Growth in Water |
Thermal Conductivity |
Coefficient of Thermal Expansion |
|---|---|---|---|
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 |
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Where can I use CPVC ?
CPVC is designed for use in hot-and-cold-water distribution systems. CPVC systems are ideal for all potable water piping requirements in typical residential (single and multi-family), motel / hotel, mobile home, manufactured housing, light commercial, and institutional structures.
CPVC Plumbing Systems conforming to IS: 15778 / ASTM D2846 are rated for continuous service at 7kg/cm2 (100 psi) and 820C and are marked accordingly. CPVC Plumbing System is capable of handling short-term pressure/temperature excursions beyond these levels. Therefore, CPVC is well suited for usage as T/P relief valve discharge lines, evidenced by its faultless service history over the past two decades in this application.
Higher Diameter Pipes as per Schedule 40 and Schedule 80 are used for a wide variety of industrial applications.
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What is the expected performance of a CPVC water distribution system ?
CPVC piping systems have been installed and operated since 1959, and initial installations are still performing faultlessly. CPVC piping will not fail prematurely due to corrosion, electrolysis, or scale build-up in areas where water, soil, and/or atmospheric conditions are aggressive.
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What is the thermal expansion rate for CPVC, and how can I best allow for expansion and contraction when installing ?
CPVC, like all piping materials, expands and contracts with changes in temperature. The co-efficient of linear expansion for CPVC is 3.2 X 10-5 in./in./° F. A 25° F change in temperature will cause an expansion of 1” for a 100-ft straight length. For most installation and operating conditions, expansion and contraction can be accommodated at changes of direction.
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What will be the effect if CPVC pipes and fittings are directly placed under the sun ?
Prolonged exposure of CPVC pipes to the sun prior to installation will result to surface discoloration and slight reduction of its impact strength but are not likely to cause problem during the installation or affect the pressure bearing capability of the pipe once it is in service. To prevent discoloration of the pipes, they should be shaded from the direct rays of the sun.
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If CPVC pipes are to be buried in the ground, what should be the minimum cover ?
The recommended minimum cover for pipes buried in the ground is one (1.0) meter, however, this is not a hard and fast rule as there are many factors that determine the minimum cover requirement of CPVC pipes.
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Do CPVC pipes support fire ?
CPVC pipes have high limiting oxygen index (LOI). Hence, they do not support combustion and are self-extinguishing, meaning, they immediately stop burning once the source of fire is removed.
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Are CPVC resistant to strong alkali and acids ?
CPVC are resistant to most alkali and acids and are therefore non-corrosive.
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Can a PVC pipe be used with a CPVC fitting and vice-versa ?
Yes, but it is not advised. There are solvent cements that can be used for both PVC and CPVC; however, any piping system that will jointly use PVC and CPVC will be limited only to the temperature limit of PVC.
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Due to the thermoplastic nature of CPVC pipes and fittings, can they be handled ruggedly without the risk of damage or cracking ?
Not true. It is a common misconception that because CPVC are plastics and they are light and easy to carry, they can be dropped or abused without being damaged. Reasonable care should be exercised when handling and storing pipes and fittings. They should not be dropped, stepped on or hit by hard objects as they can develop hairline cracks that can result to eventual failure during service.
CPVC Pipes
KML Classic CPVC pipe and fittings are available in sizes ranging from 15mm (1/2") to 110mm (4") in diameter and come in 5 metre and 3 metre lengths. These CPVC plumbing pipes from KML Classic, ranging from sizes 15mm (1/2”) to 50mm (2”), are manufactured as per IS: 15778 Class 1 SDR 11 and Class 2 SDR 13.5 specifications and carry the coveted BIS marking for CPVC Pipes. They also conform to ASTM standards such as ASTM D2846 for CPVC Hot & Cold Water Plumbing Systems. The higher diameter CPVC plumbing pipes, ranging from 65mm (2") to 110mm (4"), are manufactured as per ASTM F441 for Higher Diameter in Schedule 40 & 80. All pipes are manufactured using the same compound as per ASTM D1784 Class 23447 B for CPVC Compounds, ensuring the highest quality CPVC pipe and fittings.
Due to the differences in wall thickness between SDR 11 and SDR 13.5, these CPVC plumbing pipes offer varying pressure ratings at any given temperature. The following table shows the pressure rating at room temperature and maximum temperature:
Pipe |
Temperature (ºC) |
Pressure Rating(As per ASTM D2846) |
|
|---|---|---|---|
(PSI) |
(Kg/Sq.Cm) |
||
SDR 11 |
23 |
400 |
28.1 |
82 |
100 |
7.00 |
|
SDR 13.5 |
23 |
320 |
22.5 |
82 |
80 |
5.6 |
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CPVC Pipes Range
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Download PDF
Friction Loss and Flow Velocity for SDR 11 CPVC Pipes
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
65 |
2-1/2 |
|
80 |
3 |
|
100 |
4 |
Download PDF
Carrying Capacity & Friction Loss for Schedule 40 Thermoplastic Pipe
Outside Diameters, Wall Thickness & Pressure Rating
Size (mm) |
Size (in) |
|---|---|
|
65 |
2-1/2 |
|
80 |
3 |
|
100 |
4 |
Download PDF
Carrying Capacity and Friction Loss for Schedule 80 Thermoplastic Pipe
CPVC Fittings (As per ASTM D-2846 SDR 11)
KML Classic CPVC pipe and fittings are available in sizes from 15mm (1/2”) to 110mm (4”) and offer a complete range of fittings ideal for residential and commercial use. These CPVC plumbing pipes and fittings are manufactured as per ASTM D2846 SDR 11 specifications in sizes ranging from 15mm (1/2”) to 50mm (2”), while the sizes ranging from 65mm (2-1/2”) to 110mm (4”) are made as per ASTM F439 Schedule 80 for CPVC Fittings. Our CPVC pipe and fittings use the same high-quality compound used in our pipes, complying with ASTM D1784 Class 23447 B for CPVC Compounds. Designed for longevity and performance, these fittings can be easily installed using KML Classic CPVC Solvent Cement, ensuring strong, leak-proof joints.
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
20 X 15 |
3/4 X 1/2 |
|
25 X 15 |
1 X 1/2 |
|
25 X 20 |
1 X 3/4 |
|
32 X 25 |
1-1/4 X 1 |
|
40 X 32 |
1-1/2 X 1-1/4 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
20 X 20 X 15 |
3/2 X 3/4 X 1/2 |
|
25 X 25 X 15 |
1 X 1 X 1/2 |
|
25 X 25 X 20 |
1 X 1 X 3/4 |
|
32 X 32 X 25 |
1-1/4 X 1-1/4 X 1 |
|
32 X 32 X 20 |
1-1/4 X 1-1/4 X 3/4 |
|
40 X 40 X 25 |
1-1/2 X 1-1/2 X 1 |
|
40 X 40 X 20 |
1-1/2 X 1-1/2 X 3/4 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
Size (mm) |
Size (in) |
|---|---|
|
20 X 15 |
3/4 X 1/2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
Size (mm) |
Size (in) |
|---|---|
|
15 X 15 |
1/2 X 1/2 |
|
20 X 15 |
3/4 X 1/2 |
|
20 X 20 |
3/4 X 3/4 |
|
25 X 15 |
1 X 1/2 |
|
25 X 20 |
1 X 3/4 |
|
25 X 25 |
1 X 1 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
15 X 15 X 15 |
1/2 X 1/2 X 1/2 |
|
20 X 20 X 15 |
3/4 X 3/4 X 1/2 |
|
20 X 20 X 20 |
3/4 X 3/4 X 3/4 |
|
25 X 25 X 15 |
1 X 1 X 1/2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
20 X 15 |
3/4 X 1/2 |
Size (mm) |
Size (in) |
|---|---|
|
20 X 15 |
3/4 X 1/2 |
|
25 X 15 |
1 X 1/2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (ml) |
|---|
|
29.5 ml |
|
59 ml |
|
118 ml |
|
237 ml |
|
473 ml |
|
946 ml |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
|
25 |
1 |
|
32 |
1-1/4 |
|
40 |
1-1/2 |
|
50 |
2 |
Size (mm) |
Size (in) |
|---|---|
|
15 |
1/2 |
|
20 |
3/4 |
Size (mm) |
Size (in) |
|---|---|
|
20 X 15 |
3/4 X 1/2 |
|
25 X 20 |
1 X 3/4 |
|
25 X 15 |
1 X 1/2 |
|
32 X 25 |
1-1/4 X 1 |
|
32 X 20 |
1-1/4 X 3/4 |
|
40 X 32 |
1-1/2 X 1-1/4 |
|
32 X 15 |
1-1/4 X 1/2 |
|
40 X 25 |
1-1/2 X 1 |
|
40 X 20 |
1-1/2 X 3/4 |
|
40 X 15 |
1-1/2 X 1/2 |
|
50 X 40 |
2 X 1-1/2 |
|
50 X 20 |
2 X 3/4 |
|
50 X 25 |
2 X 1 |
|
50 X 32 |
2 X 1-1/4 |
|
50 X 15 |
2 X 1/2 |
Size (mm) |
Size (in) |
|---|---|
|
20 X 15 |
3/4 X 1/2 |
|
25 X 15 |
1 X 1/2 |
CPVC Fittings (Sch. 80 Fittings as per ASTM F439)
Size (mm) |
Size (in) |
|---|---|
|
65 |
2-1/2 |
|
80 |
3 |
|
100 |
4 |
Size (mm) |
Size (in) |
|---|---|
|
65 |
2-1/2 |
|
80 |
3 |
|
100 |
4 |
Size (mm) |
Size (in) |
|---|---|
|
65 |
2-1/2 |
|
80 |
3 |
|
100 |
4 |
Size (mm) |
Size (in) |
|---|---|
|
65 X 50 |
2-1/2 X 2 |
|
80 X 65 |
3 X 2-1/2 |
|
100 X 50 |
4 X 2 |
|
100 X 80 |
4 X 3 |
