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Showing posts from 2015


National Bank for Agriculture and Rural Development
NABARD is the apex development bank in India, head quartered in Mumbai.
It was established in 12-July-1982 by a special act of parliament and its main focus was upliftment of rural India by increasing the credit flow for elevation of agriculture and rural non farm sector.

NABARD was established on the recommendations of Shivraman Committee, on 12-July-1982 to implement the National Bank for Agriculture and Rural Development Act, 1981.
It is one of the premier agencies providing development credit in rural areas.

It replaced the Agriculture Credit Development (ACD) and Rural Planning and Credit Cell (RPCC) of Reserve Bank of India (RBI) and Agricultural Refinance and Development Corporation (ARDC).

NABARD is the apex institution in the country which looks after the development of cottage industry, small industry and village industry and other rural industries.

NABARD's refinance is available to State Co-operative Agriculture and …

Check Valve

A Check Valve, Non Return Valve or a One way Valve is a valve that normally allows fluid (Liquid or Gas) to flow through only one direction.
Check Valves are two port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. Check Valves work automatically and most are not controlled by a person or any external control, accordingly, they do not have any valve handle or stem.  

Check Valves are automatic valves that open with forward flow and close with reverse flow. The pressure of the flow passing through the system opens the valve, while reversal of flow will close the valve.

Types of Check Valves
Swing Check Valve
A basic Swing Check Valve consists of  a Body, a Bonnet and a disc that is connected to a hinge. The disc swings away from the valve seat to allow flow in forward direction, and returns to the valve seat, when upstream flow is stopped, to prevent backflow.
The disc in a swing check valve is unguided as it fully opens or closes.…

NACE Standards

NACE InternationalNACE International formerly known as National Association of Corrosion Engineers, established in 1943 by eleven corrosion engineers from the pipeline industry.
The founding engineers were originally part of the regional group formed in 1930s when the study of cathodic protection was introduced.
Since then NACE International has become the global leader in developing corrosion prevention control standards, certification and education.
NACE has published standards since 1969 and has been accredited by the American National Standards Institute (ANSI), which is the U.S. member of International Standards Organisation (ISO) as a standards developer for many years.  
NACE Standards for Sour Gas Applications
Natural Gas and Crude Oil, as raw materials, contain greater or lesser high levels of Hydrogen Sulfur (H2S).  If there is a minimum amount of H2S and a minimum amount total pressure, such a mixture is known as "Sour Gas" or "Sour Oil". NACE Standards describ…

Importance of Infrastructure in Emerging India

India an emerging economic power, like that of the neighboring China, has been spurred by momentous growth rates in the past few decades.

But years of under-investment in infrastructure have left the country with poorly functioning transit systems and power grids that further endangered its slowing economy.

Burgeoning trade is putting pressure on India's inefficient ports, and rapid urbanization is straining the country's unreliable electricity and water networks.

Fulfilling India's aggressive economic growth aspirations, would be seriously challenged due to this infrastructure shortage.
The country needs to urgently accelerate the conceptualization and implementation of all its infrastructure development to enable a planned growth.

In a recent report McKinsey & Company, estimated that India could suffer a GDP loss of $ 200 billion in fiscal year 2017 due to inefficiencies in infrastructure, which is around 10 % of it's current GDP.

In terms of GDP grow…

Gate Valve

A Gate Valve is also know as Sluice Valve, is a valve that opens by lifting a round or rectangular gate/ wedge out of the path of the fluid.

Gate valves are primarily designed to start or stop flow, and when a straight-line flow of fluid and minimum flow restriction are needed. In service, these valves generally are either fully open or fully closed.
Construction of a Gate ValveGate valves consists of three main parts: body, bonnet, and trim. The body is generally connected to other equipment by means of flanged, screwed or welded connections. The bonnet, which containing the moving parts, is attached to the body, usually with bolts, to permit maintenance. The valve trim consists of the stem, the gate, the disc or wedge and the seat rings.

Discs of Gate Valve
Gate valves are available with different disks or wedges.
The most common types of Discs are :
Solid Wedges Solid wedge is the most commonly used disk by its simplicity and strength. A valve with this type of wedge can be installed in e…

Piping Dimensions (DN Vs NPS)

The size of pipes, fittings, flanges and valves are given in two Units NPS = Nominal Pipe Size (Inches) DN = Diameter Nominal (Metric)
Following is the comparison :
Diameter Nominal
Nominal Pipe Size
6 1/8 8 1/4 10 3/8 15 1/2 20 3/4 25 1