Firetube Boilers and Watertube Boilers

Firetube Boilers: Firetube boilers are also know as shell boilers. These boilers are the most commonly used boilers in the market. In the firetube or shell boilers the water is surrounded by the water. The water which surrounds the shell or firetube is heated by sending the hot gases or fire which is produced by the burner through the shell or firetube. The hot gases or fires are allowed four times through the tubes in the boiler before letting the out of the boilers. These tubes are generally set at the banks of the boilers. The firetube boiler systems can release up to 25,000lbs or 750hp of steam per hour. About 80% of the boilers that are in use today belong to this particular category.

Watertube Boilers: In the Watertube Boilers the tubes are arranged vertically in the shell. Then the water is filled in the shell which is heated by sending the hot fuel or hot gases through the tubes. Generally Watertube boilers are built in rectangular shape with two or three drums. The drums are arranged at the top and bottom, where top drum is used to separate water and steam and the bottom drum is used to collect he sludge. Watertube boilers are usually utilized when more than 750hp of steam per hour is required.

Boiler Tube

Types Of Plastic Pipes And Their Uses

With the high price of plumbers it is understandable that so many people are now deciding that the do it yourself route is a far more affordable option. Plastic pipe is the perfect material for the job as even the lay man can manage to put together a piping system. Naturally plastic pipe is an umbrella term that covers a number of different plastics, usually of the thermo variety but still disparate enough to note the differences. Here are some of the most popular plastic pipe variants used.

PVC or polyvinyl chloride is an extremely popular plastic in the piping world; it is extremely rigid and is adept at resisting many chemicals. The main form of welding is though solvents and is predominantly used for applications such as sewers, drain pipes and cold water pressurised water piping. It comes in a variety of different colours.

ABS or acrylonitrile butadiene styrene is used for many of the same purposes as PVC although its chemical resistance is lower and it is normally produced with a black colouration.

CPVC or chlorinated polyvinyl chloride is like PVC but stands up to high temperatures more effectively and hence is used for hot and cold water supply applications.

The previous three plastic pipe variants are all rigid whereas PB (polybutylene) and PE (polyethylene) are flexible; the former being rigid and used for the same purposes as CPVC and the latter being low cost. Both of these types are not joined with solvents but are instead formed with mechanical and clamped couplings.

In terms of buying the pipe for your plumbing needs pipes normally come in sizes along two lines, these being pipe sizes and tubing sizes. Pipe sizes relate to the old steel pipes while tube sizes relate to copper tube. It is important to note that different plastic pipes should not be connected together, like for like connections are always advisable. Because the plastic pipe industry moves quickly it is important to recognise that building regulations should always be consulted before undertaking any work.

For instance regulations permit the use of CPVC and PB pipe for hot water applications. These two pipes are perfect for constructing in-home hot water systems as they are corrosion free and durable. It should be remembered however that this form of pipe should not be used for electrical grounding as it is non-conductive. PVC pressure pipes should predominantly be used for cold water movement in outdoor areas; such as water sprinkling systems in gardens. PE pipe is similar although it is flexible rather than rigid, and is perfectly suited to deep piping well purposes.

There are two major methods of fitting piping systems together; these are solvent welding and mechanical coupling. Solvent welding is simple enough although care should be taken to carry out the task effectively to prevent any leaks. The pipe must be cut squarely, cleaned thoroughly, coated with solvent and then joined with the fitting piece. It should be remembered however that cuts are final, there is no way back should you cut the pipe too short. Mechanical coupling however is used with plastic pipes that cannot be welded with solvents. Normally it requires a simple click into place as the fittings have barbs and clamps that prevent leaking.

SSAW Carbon Steel Pipe

Working principle of a Boiler

Every household in the United Kingdom has a central heating boiler in their houses. But anyone of you has ever thought how does a central heating boiler work. Today I am going to explain how exactly the central heating system (boiler) works.

The water stored in the vessel when heated to a desired temperature level by burning natural gases, coal and wood pellets can be defined as a boiler. The steam produced by the boiler when heated is piped to a spot which can be is utilized for different purposes such has running the production units, sanitizing some area, sterilizing equipments, to warm up the surroundings, to heat up the water, and many more.

After the burners are heated up using the required fuels, then the gases or the fire from the burners are directly released on the boiler to heat up the water. The water can be boiled in the boiler depending on the two types of boilers used in the market.

There are generally two types of boilers which use their own principles to produce heat.

Boiler Tube

Acidic Water Filtration Systems Prevent Copper Pipe Corrosion on Acid Well Water

In thousands of homes on well water, acidic water causes thinning of copper pipes, pinhole leaks, and numerous copper pipe leaks over time. Acidic water filtration systems can easily correct and neutralize a low pH in well water.

The pH scale is a scale from 1 to 14. A neutral pH is 7. A ph of less than 7 is considered acidic. A pH greater than 7 is considered alkaline and is less corrosive to copper pipes than waters with a pH of less than 7.

Signs of acid water are corrosion of fixtures, blue staining (from copper pipes) or rust staining (from iron pipes). Acidic water can also cause pinhole leaks and pipe failure over time. By raising the pH to the range of 7.0 to 7.5 the water can be made alkaline which will then reduce or eliminate pipe corrosion.

Common causes for acidic water are acid rainfall due to atmospheric carbon dioxide and other airborne pollutants, runoff from mining spoils, and decomposition of plant materials. Acidic waters can be of good quality and are typically low in buffering calcium minerals, but are high in dissolved carbon-dioxide gas, which can cause the low pH or acidity.

The size of the system is directly proportional to the flow rate of the water, in gallons or liters per minute. The higher the flow rate, and the more gallons per minute flows through the pipes, the larger the system required. Generally for most homes with 1 bathroom, a 1 cubic foot size system containing 100 lbs of calcite will work well. For homes with 1 to 2 bathrooms, a 1.5 cubic foot filter is recommended. For higher flow demands and in homes with 3 to 4 bathrooms and larger families, a 2.5 cubic foot neutralizer containing 250 lbs of calcite is recommended.
Neutralizer filter tanks contain a small amount of filter gravel in the bottom of the tank and are filled to two-thirds full with a blend of calcium and magnesium carbonates made from naturally occurring minerals. These minerals dissolve into the water, making it less corrosive. More mineral can quickly and easily be added to the filter tank, typically once per year for most residential applications. No special tools are required.

The neutralizer filter should be installed after the pressure tank but before any copper piping in the house. If the pressure tank, check valve and pressure switch are installed with copper piping the copper piping should be replaced with PVC or stainless steel pipes up to the inlet of neutralizer filter. It is OK to have copper pipes installed on the outlet of neutralizer filter since the water is neutralized at this point and the pipe will be protected.

Anti-corrosion Pipes

HDPE pipe suppliers offer pipes with low notch sensitivity

HDPE or High-density polyethylene is made with petroleum, which is also known as polythene when it is used for manufacturing water pipes. It is highly appealing for its wide strength-to-density ratio and its higher resistance against different solvents. This material is used in the production of water pipes, which are used to supply water in a building as a municipal water system part. Furthermore, with its brilliant quality features, this HDPE material is also ideal to manufacture geomambranes, plastic bottles and plastic lumber etc. In addition, pipes made from HDPE material have resistance to acid and alkaline and are available with high flow characteristics. Therefore, according to their sizes and specifications, a pipe is provided with different range of pressure rating. Basically, size of a pipe ranges from 20 to 1600 mm and these products are available with long working life such as more than 50 years in a normal condition.

With features like high ductility, non-toxic nature, smooth yet rigid construction and fine finish, the pipes are designed with a facility to easy transport them anywhere as they are light in weight and have good flexibility. Other quality characteristics of these products include resistance to abrasion, twisting, earthquake and impact, low friction coefficient and improved capability. Both types of welding that is electro fusion welding and butt welding are applied on this product in order to provide rigid joints in a reliable manner. In addition, HDPE sockets or couplers both are useful to join these pipes mechanically to provide excellent performance.

 Anti-corrosion Pipes

Uses And Benefits of Carbon Steel

All types of steel contain carbon but carbon steel has more carbon content. It also includes manganese and iron. It is considered to be one of the most widely used steel metals. It has many uses and advantages compared to other types of metals. It is also known as wrought steel and it can be formed into any shape. It is quite malleable and therefore it can be made into desired shapes. It is poured into blocks that are rolled to form desired shapes.

Carbon steel is categorized into three types which include low or mild steel, medium steel and high carbon content. The low alloy is easy to form and shape as it includes low level of carbon. Medium carbon steel is mainly used to make shafts, couplings and axles.
Another notable variety of steel includes the ultra high steel metal which is very tensile and strong. It is mainly used to manufacture knives and axles.

All these types of steel metals are used to manufacture various types of industrial tools and machines. It is also used to manufacture drilling bits as it is strong and tensile. It is even used to manufacture cutting tools and nails. High steel is mainly used to manufacture drill bits, knives and cutting tools as it is strong and versatile.

In addition to this constituent, many other elements such as manganese, chromium and tungsten are used as hardening agents. The properties of steel can be determined by the proportion of these elements.

Stainless steel which contains high level of this alloy is known to be rust proof and strong. Although this type of steel is inclusive of various benefits, it includes certain disadvantages. It is known to be brittle and therefore it can seldom be used for constructing building and bridges. Steel with low level of the main alloy can be used for various purposes as it is less brittle and stronger.

Nevertheless, it is used for manufacturing steel pipes as it tends to remain intact. It is also known to be durable and resistant. As it is anti-corrosive, it can be used for under water purposes. It has the ability to withstand high pressure and therefore it is used for various industrial purposes.

 LSAW Carbon Steel Pipe