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PVC

PVC Sewer fittings

Oct 27th, 2010
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Today PVC fittings is widely used to create a plumbing system and meet all the requirements for piping and

construction materials. Due to their properties and the low price they drove expensive metal. What is

their advantage? PVC fittings have smooth internal and external surface, due to this there is no overgrowth

of fittings does not reduce the diameter and the fluid leaks faster. Wall thickness conforms to the outdoor sewer PVC – 3,2 mm. Increased stiffness of tubes allows a wide diameter of the installation of risers. PVC fittings do not corrode and wear out much less than metal. All this provides them with high mechanical

strength.

PVC fittings are lightweight, which reduces transportation costs and helps comfort and ease of installation.

Rubber gasket, which is used for connecting pipes, the impermeability of PVC fittings. PVC fitting shock-

resistant, resistant to deformation, chemical resistance, ultraviolet. GOST 12.1.044 as they relate to

“flammable” – PVC composition excludes the possibility of ignition and Carpet Cleaning in NJ
. PVC pipes are

non-toxic, do not emit into the environment of hazardous substances and do not harm the human body by

direct contact with them. They have insulating properties. Low surface roughness contributes to the small

surface resistance PVC fitting to the current water and increases the capacity. Therefore, the sewage system,

assembled from PVC fitting, running without noise and vibration.

To connect PVC fittings there are several ways – through the fittings and flanges. Fittings allow the pipe to

attach to the desired angle, make the necessary ramifications. Flanges attached to the fittings and the screw

or by welding. To manufacture the flanges there are standards – ASTM 12822-80 and ASTM 12820. Widely used,

the flange is flat and weld steel.

Standards, which regulate the technical properties of the pipes: ASTM 52134-2003 “Thermoplastics

Pressure Pipes and Fittings to them for water supply and heating; ASTM 28117-89″ fittings of unplasticized

polyvinyl chloride. Types and product mix. ”

PVC fittings for the price / quality ratio compares favorably with other types of pipes. They are widely used

not only in water supply and sanitation, but also in the chemical and food industries.

PEX Plumbing Supports That Are Used In Radiant Heat Installation

Sep 15th, 2010
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PEX plumbing is what to expect in the future of the plumbing industry. In radiant heat installation, we have to keep in mind the PEX fittings, plumbing tubing, the installation accessories and any other plumbing package that is available including the supports.

PVC, plastic and metal bend supports for radiant heat installation, allow easier turns with the PEX plumbing tubes. The PVC Bend Support used in plumbing specifically for radiant heat installations.
The plastic bends are for indoor plumbing on ceilings and walls. The plastics bend are light and do not cause an increase of stress in the PEX plumbing tubes. The drop ear used allows you to make an attachment on any surface and provides the support needed in plumbing installations.

The PEX plumbing steel band supports are manufactured from corrosion resistant galvanized steel. In plumbing, they are used for attaching the PEX plumbing tubes to concrete slabs. This is to enable them provide a very smooth 90 degree turn when needed. The plumbing steel supports are usually much heavier than those made of plastic are. They add weight to the PEX plumbing tubes and prevent the tubes from floating.
In the radiant heat installation the PEX lock clips are double clips and allow secure installation of FostaPEX and ViegaPEX plumbing tubes. The use of these in PEX plumbing a fastener can allow very neat installation of many multiple lines. They are very compatible with PEX compression press push fit.

The half an inch plastic bend for PEX plumbing is relatively cheap and is a good support for the plumbing tubes. It is also compatible with the PEX Compression press (Viega) push fit (Sharkbite)
PEX manifolds are very important. The number of circuits determines the number of radiant heat manifolds required. Always have enough space on the PEX pipes where fixtures and manifolds are connected.  With PEX pipes connections to the fixtures from the manifold are direct.

The suppliers of the supports that are useful in the plumbing radiant heat installation have a large stock available for very competitive prices. In the PEX plumbing websites of the companies, you will find catalogs that give more information on these fixtures.  If you cannot find what you are looking for, contact the representatives of the plumbing industry and get more details. Always go for the best and also the most experienced.

http://www.pexuniverse.com/store/category/pex-plumbing

Marking of plastic pipes

Sep 5th, 2010
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Marking of plastic pipes is regulated by international standard ISO / TC SC4 № 651. Meanwhile, on the specific product you are likely to see the information that you wanted to specify the manufacturer and which only partly corresponds to the list of ISO.

The first thing that must be indicated on the tube – the standard to which it corresponds. Frequent marking ISO 9001 (product is certified in accordance with the international standard) and DVGW K178 (symbol admissibility transportation of drinking water under the rules of Germany’s association Deutscherverem des Gaz und Wasserfaches).

One commonly accepted set of symbols of the material, neither Canada nor in the world does not exist. Here are the most common options:

PE – PE (in the international writing PE):

HDPE, HDPE (HDPE) – low-pressure polyethylene, or high density

HDPE, LDPE (LDPE) – High-pressure polyethylene, or low density;

PP – polypropylene (PP):

PP-h, type 1 PP – homopolymer, or pure polypropylene

PP-b, PPB, PP type 2 – a block copolymer,

PP-r, PPRC, PP type 3 – a statistical copolymer (random copolymer);

polyvinyl chloride – PVC (PVC):

CPVC (CPVC) – chlorinated PVC

UPVC – not plasticized PVC;

crosslinked polyethylene – EIT (PEX, PE-X):

PEX-a – obtained a peroxide crosslinking,

PEX-b – cross-linked with gas silane,

PEX-a – crosslinked radiation method

PEX-d – cross-linked with nitrogen compounds;

polibuten, or polybutylene – PB (PB);

metal-pipe – MP (MP), PEX-AI-PEX, PP-AI-PP, PE-AI-PE (depending on the composition of the layers).

Trends in world PVC market

Aug 17th, 2010
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Market volume flexible polymers

According to magazine PlasticsNews total world production of flexible polymers in 2006 amounted to 21,240 tons. U.S. research firm Chemical Market Resources Inc. predicts growth in world demand for flexible polymers in 2008 to 18,1% to 25,080 tonnes. Today in the world among the flexible polymers absolutely dominated PVC elastrons.

Global demand for flexible polymers by type in 2006

Source: Journal of Plastics News

Is the replacement of PVC other plastics?

The total consumption of PVC plasticized in the U.S. market in 2005 amounted to 3,228 thousand tons, while production on a segment of wires and cables had to be 514 thousand tons. The average growth in consumption of PVC plasticized in the past five years amounted to 1,7% in the year, cable compound – 2%.

Demand for PVC plastic compounds in the U.S. in 2000-2005 years, thousands of tons

In recent decades, the professional community is an active debate about the prospects for the replacement of PVC fittings plasticized with alternative raw materials. In the first case of polyolephines, especially produced by metallocene catalysts.

Key reasons causing interest in the development of alternative raw materials in segments dominated PVC plastic fittings, on the major Western markets – certainly in the environmental and safety of PVC materials. Consequently, fears that the use of PVC raw materials at any time may be prohibited or significantly restricted by administrative means.

Polyolefins and alternative materials have a density that exceeds the PVC, and the price can be an order of magnitude lower. This price advantage if the results are the same, can significantly increase the share of alternative materials.

But in practice, the process of replacement is very slow. Here are the main isolated in Western publications reasons that complicate replacement of PVC:
1. PVC is used in many medical sector. By the pluses of PVC can be attributed the fact that PVC has the best achievement among the other plastic materials used up to now. Despite the duration of its use in medicine, never had cases to PVC or related materials, have caused any health problems or death of patients. This achievement, which boasts not every plastic. This excellent reputation for making PVC complex object for substitution.
2. Among thermoplastic materials, PVC has the properties and thermoplastics and, in addition, it is easy to mix, to achieve flexibility, so he finds a lot of end uses, even through simple mixing. Other plastics (PE, PP, PS) should be individually mixed with rubber to achieve flexibility. On the other hand, the flexibility of PVC can be obtained by simply changing the level of plasticizer. Thus, it reduces the dependence on reactor technology.
3. Production of PVC vertically integrated, which complicate the issue of new materials on the market.
4. Most PVC converters on the market, are associated only with PVC and can not be transferred to other plastic and vice versa.
5. The development of alternative materials, mainly from polyolefins, is still in its infancy and very expensive. And still not developed a system of full replacement.

One of the difficulties associated with environmental and safety use of PVC is the prevalence of use as stabilizers containing lead. In North America and Europe are moving away from their use, replacing them with mixed metal stabilizers. The European vinyl industry has created a voluntary society Vinyl 2010 to replace stabilizers containing lead, to more environmentally-friendly mixed metals or organic stabilizers. Purpose – absolutely replace the lead by 2015 and reduce the consumption of lead by 50% by 2010.

In 2004, Chemical Market Resources Inc. conducted a study on “Possibilities of substitution of flexible PVC polyolefins.

The main end applications for the flexible PVC are: (1) film and sheet, (2) wires and cables, (3) coating of fabrics, (4) pipes and profiles, and other applications.

Flexible PVC has long been considered a potential target for the replacement of many producers of polyolefin. Based on detailed analysis of end-use of flexible PVC, the biggest potential market for replacement of PVC are polyolefin film and sheeting. The use of films and sheets consist of: (1) shrink film, (2) non-shrink film, (3) geopokrytiya, (4) roofing, (5) Medical Packages (6) Industrial tape, (7) Transparent packing.

These segments of the market exposed to the replacement of polyolefins produced by metallocene catalysts. Here are the main reasons: (1) the advantage of density, (2) low dose, (3) similarity of products, (4) a more pure product, (5) is simple in processing.

Other markets are prone to substitution: medical tubes, industrial pipes, tubes, medical devices, seals and gaskets, transparent packaging, and others. Polyolefins, based on metallocene catalysts have already invaded the market of films: shrink films, non-shrink film, tapes and bags of blood.

Speaking about the full potential of flexible PVC replacement new generation of polyolefins, can be based on the following factors: (1) the presence of polyolefin suppliers in this market segment, (2) a combination of products with polyolefins. (3) the presence of converters similar to PVC and PVC materials, (4) ability to use existing equipment.

The attractiveness of the market – the attractiveness of the market was determined by five factors: (1) global competition, (2) pricing, (3) market size, (4) growth, (5) number of end uses. For each parameter, given different percentages and distribution: (1) global competition (30%), (2) pricing (20%), (3) market size (20%), (4) growth (15%), ( 5) number of end applications (15%). All major markets are flexible PVC evaluated on the above parameters on a scale from 0 to 1.

Vulnerability index – an index of vulnerability was defined by the following factors: (1) product development and good timing, (2) the ratio of price / performance, (3), environmental pressures, (4) interoperability and (5) ability to use existing equipment. For each parameter, given different percentages and distribution: (1) product development, and good timing (35%), (2) the ratio of price / performance (30%), (3) environmental stress (15%), (4) the interchangeability (10%), (5) ability to use existing equipment (10%).

Thus, summing up contained in the study, we note that the potential isolation and casing for the wires and cables in a fairly high degree of vulnerability and attractive alternative to replace raw materials in the world’s leading markets. This allows manufacturers to cable compound in advance receive a signal about the danger of potential replacements in case the process of replacement will start to develop the most promising for the replacement market (industrial hoses and tubes, medical tubes, seals and gaskets shrink and non-shrink film). In U.S, however, a reverse process, PVC plastic compounds only penetrate into most of these segments.

Regarding the cable directly to PVC plastic, the situation with their replacement in the opinion of the leading manufacturers of polymer raw materials in Europe next.

PVC has two drawbacks in cases of fire:

- They produce a dark, toxic smoke and hard for people to find a way out in case of fire.

They are also corrosive, resulting in large accumulation of acids.

Replacement of flexible PVC has already begun, especially in the construction of public buildings (metro, airports, stations, administrative buildings).

In European countries (Spain – Netherlands – Sweden), the Government encourages the development of nonflammable compounds, halogen-free, tax cuts in this area.

Compounds of polyolefins do not emit black smoke or corrosive acids during combustion. They can be used at higher temperatures than PVC (limit – 110S)

The disadvantage of polyolefin compounds is that they are more stringent. Company

Arkema made suitable products (copolymers of ethylene and terpolimery), to reduce the interval stiffness, as compared to PVC.

Growth nonflammable, non-halogen compounds was quite significant in recent years (10-20% per year). Predicted. With such growth will continue in the future.

For example, now moving nonflammable, halogen compounds (HFFP) to the European markets of automobile engines as a replacement for PVC. In this area is limited to the thermal stability of PVC.

The world’s leading manufacturers of PVC plasticized

Shulman Inc.

A. Shulman – a leading global manufacturer of high quality plastic compounds and resins, which are used as raw material in diverse markets.

The main commodity linear company are plastic compounds, color concentrates and additives that improve the appearance and quality of plastic.

Head-office is located in Akron, Ohio. The company has manufacturing facilities in North America, Europe, Mexico and the Asia-Pacific region.

The company is a proven supplier of flexible compounds for over 30 years.

Products: Cable elastrons SUNPRENE ®

SUNPRENE ® has been used successfully as a high quality, cost-effective substitute for rubber and other thermoplastic elastomers in areas such as automotive, wire and cables, heavy industry. Advantages: great ability to endure weather conditions, durability, ease of handling, reduced the degree of friction. Using the processing includes extrusion and calendering, special varieties suitable for blow molding and injection molding.

Colorite Polymers

Over 50 years, Colorite Polymers is a leading manufacturer of high quality PVC compounds. The company is a division of Tekni-Plex, Inc., Global diversified manufacturer of packaging products and materials for health care, consumer market and the market of food packaging.

Colorite Polymers offers a wide range of PVC compounds for use in medical, automotive, construction. The company is constantly working with its customers and develop new compounds.

The head office is located in Ridgefield, New Jersey. Production facilities are located in Sparks, Nevada, and in Belfast, Northern Ireland.

Solvay Benvic

The company has five factories in Europe: Belgium, France, Italy, U.S and Spain, and one in Brazil, giving the production capacity of 350, 000 tons per year. PVC compounding company Benvic nonflammable, resistant to wear, heat aging, which makes them ideal for cladding, cable insulation, as well as for automotive, telecommunications and special cables.

Automotive cables. Exposed to intense heat, cold, dust, chemicals, mechanical abrasion, fire. Elastrons Benvic used because of their resistance to heat aging, abrasion and fire.

Benvic ® KI002/0000

Type – Plasticized

Form – granules

Color – colorless

Stabilizer – calcium-zinc

Transparency – opaque

Special features – improved resistance to thermal aging.

heating mats.

For industrial and domestic cables, Benvic plastic compounds are used for sheathing and insulation. They are used in semi-rigid and flexible cables, with service temperatures ranging from 70 to 105C.

They demonstrate resistance to thermal aging, chemicals, weather, abrasion and fire.

They can also be made without heavy metals.

Benvic ® KI095/0900

Type – Plasticized

Form – granules

Color – Black

Stabilizer – calcium-zinc

Transparency – opaque.

Special cables.

These include compounds such as Plenum high fire resistance, low smoke emission, giving shrinkage when heated coating with resistance to wear.

Benvic ® KG052/0000

Type – Plasticized

Form – granules

Color – colorless

Stabilizer – calcium-zinc

Transparency – opaque

Telecommunication cables.

This growing sector can be divided into two main groups: telephone cable and transmission systems and data processing. Compounds Benvic used for internal and external cladding and insulation of telephone cables, spiral cords and panels, as well as for covering communications cables, video cables and cable safety systems.

For such use is required: a low susceptibility to corrosion, good fire resistance and resistance to wear.

Compounds Benvic ideal for covering radio frequency coaxial cables, such as TV antennas, distribution cables.

Benvic ® KI100/0000

Type – Plasticized

Form – granules

Color – colorless

Stabilizer – calcium-zinc

Transparency – opaque

Poly One

PolyOne Corporation a leading global manufacturer of compounds. The head office is located in Ohio. The company also has manufacturing facilities in North America, Europe and Asia, and has joint ventures in North America and South America.

Flexible PVC compounds.

Cable compound.

Geon ® Vinyl Wire & Cable Compounds.

PolyOne plastic compounds are used for almost any cable shell, primary insulation in areas such as the use of: telecommunication, fiber-optic cables, wiring, heating mats and control cables, etc.

Plenstar ® Plenum Vinyl Compounds.

Low smoke emission, pozharoustoychivoast.

It is used for telecommunication cables, fiber optic cables, general purpose.

Ideal for pipes made of PEX and PVC chloride

Aug 13th, 2010
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Main advantages of plastic pipes in this case – light weight, smooth walls, corrosion resistance, ease of installation. Such pipes can be cut with a hacksaw simple: networks are easily assembled by hand with bells, couplings and fittings with rubber sealing rings. Web of PVC pipe can be assembled also using adhesives and welding. Companies produce a wide range of fittings: corners, tees, reducers, etc. Another rational scope of polyvinyl chloride pipes – drainage system from the roofs.

Greater versatility than PE pipes, different polypropylene (PP) pipes. Speaking of polypropylene pipes, it should be noted that the quality of such pipes significantly affect the quality of raw materials. The best raw material for polypropylene pipe is copolymer polypropylene Random type 3 (RRR 80), known under the brand name <Fuziolen>. These raw materials used by the largest firm <Aquatherm> exercising device 35% of polymeric pipelines in Europe.

Polypropylene (PP) pipes are harder than plastic, and systems of them are going through fittings: corners, tees, etc. Systems of PP-pipe-detachable. They are assembled by diffusion bonding. To apply for a thin branch from the trunk with a large diameter, there are special fittings. For PP-pipe joints with metal parts (valves, mixers) are made with special fittings are molded them brass elements.

Polypropylene pipes can be used successfully for the internal systems of hot and cold water and heating systems in individual cottage construction. In such cases, the longevity of systems up to 50 years.

In the late 60 – early 70 years. XX. there was one of the most important events in the technology of polymers: appeared transversely crosslinked polyethylene – PEX. Cross-linking of linear molecules of polyethylene increased its heat resistance and strength, but the polymer lost the ability to weld. For cross-linking using high density polyethylene (REND) by merging several techniques using ionizing radiation, peroxides, and organosilicon compounds (silanol merging).

PEX pipes in European countries occupied first place among the plastic pipes. They can operate at temperatures up to 95 ° C and at an operating pressure up to 2 MPa (20 atmospheres). In such settings, PEX pipe can be recommended for water systems (hot and cold), and for heating in apartment buildings.

PVC – environmentally friendly solution for home and work

Aug 11th, 2010
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The variety of types of plastic pipes and a large number of firms producing such pipes should bear the inevitable competition. To some extent this is true, but a detailed study of the situation can be seen that each type of tube has its own area of their rational use.

We begin with a comparative analysis of properties of polymers and pipes that are obtained from them. First for the manufacture of pipes were used the most important thermoplastics: polyethylene (PE) and polyvinyl chloride (PVC).

Depending on the mode of synthesis of polyethylene are: high density (REND) – synthesis at low pressure with a catalyst – and low density (RELD). High density polyethylene has a more regular structure of molecules and a greater degree of crystallinity and, consequently, greater strength and heat resistance. It REND rationally used for the production of pipes.

Polyethylene retains flexibility at low temperatures (down to -70 ° C) and sufficiently high strength (up to +60 ° C). At higher temperatures the strength of polyethylene decreases, and it goes into plastic-viscous state. Polyethylene is aging rapidly under direct sunlight. Therefore, the use of polyethylene pipes in outdoor open networks to stabilize, filling the polymer with soot. Polyethylene pipes are flexible and with a small diameter are supplied in coils.

Polyvinyl chloride (PVC) over a hard, chemically-and light-resistant polymer is more than polyethylene, but its heat resistance is not as high.

PEX – Most popular choice of plumbers!

Aug 2nd, 2010
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The word PEX tubing has become a common word with people who are into plumbing. It is polythene which is cross- linked and an acronym is used to give it an easier name PEX. It can be molded into tubes that can be used for various purposes. This type of tubing is one of the long lasting materials that are in use for many purposes. The material is chlorine resistant so drinking water can safely be transported in it. PEX tubing has become an alternative to PVC and CPVC pipes in many places. The tubing is used in hydronic radiant heat tubing, in the insulation of high tension electric cables, household water pipe lines etc. Their size may vary from 1/4 inch to 4 inches. The sizes which are predominantly used are 1”, ¾” and ½”.

PEX tubing can be used for off shore natural gas, oil transportation; chemical slurry and sewage can also be transported. The tubing is widely being used for various domestic purposes as well. To use PEX, lesser fittings are required to fit a pipeline. No elbows are needed to turn it at the corners. The flexibility of this tubing system is unbelievable. As PEX tubing can be fixed with lesser fittings, the chances of leakage are minimized. It also has a lesser chance of bursting as it is highly flexible and expandable. As the water freezes or expands due to cold or heat, it can effectively withstand such extreme temperatures. While installing, care should be taken to use the insulating material locally prescribed. PEX tubing can be snapped into any connector and used with ease. There is no need to screw the pipe; it just has to be pushed to fit in.

PEX radiant heating tubing is being used in countries where the temperatures are pretty low; to keep the floors warm. PEX radiant heating tube is placed under the floor to keep it warm. Refrigeration warehouses and Ice rinks are also making good use of this tubing. Hydronic radiant heating systems also use this tubing as it can withstand great heat. The popularity of this tubing is because of its exceptional capacity to withstand heat or cold, its flexibility and ease in handling and non corrosive properties. PEX tubing is available in varied colors. It has become quite common to use blue for cold and red for hot water in homes or places where both hot and cold water is used.

Qualitative Features of PEX Tubing and Pipes

Jul 6th, 2010
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Tubes and pipes are flexible units that are used for various kinds of plumbing, irrigation applications and various industrial activities. A very strong and most popular variety of these tubing is PEX tubing that is made up of PVC, polyvinyl chloride, copper, and polyethylene (PE).

PEX tubing are used for various kinds of purposes like radiant PEX tubing, radiant heating, Hydroid heating systems, PEX plumbing and irrigation activities. These tubes are made up of very strong and robust material that can tolerate high amount of heat. For this reason it is used for applications that involve high temperatures and heat. Oxygen barriers such as Wirsbo PEX, Thermal PEX and Multi color PEX are used in radiant PEX to increase its tolerance power and strength.

PEX tubing is obtainable in rolls rather than in rigid pipe structures that are available in straight solid lengths called as sticks or joints. Available in variety of sizes, this tubing is measured from its outside diameter which is not the case in a normal daily pipe. Polyethylene molecules present in radiant PEX makes it highly resistant to all kinds of chemical attacks which is one of the major reasons for increased use of these tubing.

What to do with PEX tubing?

Jun 24th, 2010
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Today, it is difficult to imagine a device without the use of PVC plumbing fittings and pipe, which literally swept the domestic market, as well as Used in Different Agricultural Technology. Increasingly, the replacement of old cast iron systems giving way to the PVC and polymeric materials. And in many ways this situation is justified, since their installation easier, and less chance of breakage.

But even without this PEX tubing is present lots of advantages:
- Low cost compared with steel and cast iron counterparts.
- Long service life, which starts from 50 years and more, while the life of Copper pipes is only 10-20 years.
- Resistance to corrosion and lack of contamination by iron impurities.
- Low heat dissipation that is best suited for installation of radiant heating systems.
- A small mass, which is much easier process equipment, plus everything is no need to buy a tractor for transporting.

According to the companies involved in the delivery of such products, PEX tubing are perfectly safe for consumers’ health, as was proven by “numerous studies of the Ministry of Health.


pex