Predictive Maintenance

Valve Maintenance

Preventive maintenance coal handling and conveyor, Repair belt, Cold splicing, Pulley lagging, Rubber lining.

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Coating and Welding

Coating and Welding

Our company has long been enganged in the field of coating and welding.

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Online Leak Sealing

Online Leak Sealing

online leak sealing (OLLS) for : Flange gland packing, elbow pipe/bushing,etc.

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Different Types of Gate Valves That Exist in the Market


It is the commonly used valves to open and close the path of a fluid from straight line mediums. It may find applications in a number of areas. For example, these valves can be used for the purpose of irrigation and also in various chemical plants to control the flow of different types of fluids.

There are many ways to classify it. In fact, these valves exist in a variety of designs to offer suitable functionality for different applications. Each type of it is popular for its acceptance in different fields. As a valve dealer, you must offer different types of it to the customers. The following discussion will help you learn about the most popular types in detail.

Gate Valves in Different Materials

There are many popular materials that are used for manufacturing it. Those made of bronze and brass are among the popular varieties. Various forms of iron, including cast iron and ductile iron, too are used for it manufacturing. Among the different varieties of steel, stainless steel, forged steel, cast carbon steel and alloy steel are the quality materials for durable gate valves. Finally, there are valves made of gun metal that you can obtain from different manufacturers.

Rising and Non Rising Stem Gate Valves

The most important way to classify it is on the basis of the behavior of the stem attached to these valves. A rising stem gate valve is one in which the stem rises when the valve is rotated to open. However, this type of valve may not work when there is less vertical space. For example, rising stem valves are not suitable for underground operations. Non rising stem valves are used in such situations. Stems don’t rise during the operation of these valves.

Gate Valves with Different Bonnet Styles

It can also be classified on the basis of the type of bonnet they have. Screw-in bonnet style it is small in size and used for simple applications. On the other hand, high pressure applications make use of large valves with bolted bonnets. For extremely high pressure applications, the use of its with pressure seal bonnet is popular for offering high safety. A valve with union style bonnet is another option and used for applications where regular inspection is required.

Wedge and Parallel Gate Valves

Depending upon the shape that the gate valve faces form, these valves can be divided into wedge and parallel valves. Wedge valves can be further classified into single gate type, dual gate type and flexible gate type. Parallel gate valves too can be classified into single and double plate types.

Another type of it consists of those which regulate the flow of fluid. However, it is rarely used for the regulation purposes due to the fear of damage. You must guide your customers about the safety and maintenance of it to exhibit your expertise in these products. In order to obtain different gate valve models, you can find the listings of reputed manufacturers at online business directories.

Valves (Types)

valve typesValves are devices which are used to regulate liquids, gases and slurries. Valves do this by controlling the flow through pipes and other passageways by opening and closing and partially obstructing the passageway or pipe.

The majority of these mechanical valves are used on pipes and some of the major industries which use them are:

o    Oil industry

o    Gas industry

o    Mining industries

o    Water and sewage industries

The most noticeable type of valve is the hot and cold tap which is found in every household and many types of industries.

Many other types of valve are also found in the average household such as the valves which regulate the gas to a gas cooker, or valves which are used by washing machines to regulate the flow of water going to and from the machine.

Simple valves such as hand operated valves can be manually controlled by the use or turning of a handle or wheel. Other more complex valves are automated and work by external input. These types of valve usually require an actuator. The actuator works by stroking the valve depending on the set-up and input. This type of set-up allows the valve to be positioned and in turn allows control across a range of requirements.

There are many different types of mechanical valves and just some of these are:

  • Check
  • Ball
  • Diaphragm
  • Pinch
  • Plug
  • Needle
  • Gate
  • Poppet
  • Globe
  • Butterfly

The above fall into the category of basic valves, but there are many other types of valve which vary widely in their use and design.

Valves such as the Vacuum delay valve work by delaying a vacuum signal. these types of valve are commonly found in automobiles to change the behaviour of vacuum motors and vacuum switches and many other vacuum devices.

Proportioning valves work by the fluid pressure exerted on them to distribute the input forces to one or more output lines.

There are valves in the human body and heart valves are such an example. There are four valves in the heart and they maintain blood pressure by closing and opening depending on the pressure of each side.

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Online Leak Sealing

online leak sealingObjective :

To provide the service of sealing the leak without stopping production and damaging the leaking apparatus (without any shutting down the plant)


  1. Sealing the leak without stopping production and damaging Leak Apparatus (without any plant shut down)
  2. The sealtite (compound) method stops leaks of Different fluids, steam, water, air, gas. Hidrocarbons and chemical products
  3. Applicable for fluids pressure up to 3500 Psig and Fluids temperatures from -300 F to 1500 F

The process consists of fitting around the leakage Part, than preparing and enclosure which will be filled with under pressure compound

Scope of works

  • Flange
  • Elbow
  • Gland packing
  • Pipe/bushing
  • By using clamp, by using stuffing box
  • By using wire brass for gland packing

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In – Situ / In – Shop Valve Repair

In-situ valve repair-          Isolation Valve : Gate Valve, Globe Valve, Check Valve, Ball Valve, Plug Valve, Butterfly Valve

-          Control Valve :  Valve Body, Actuator, Positioner, Controller (Pneumatic, Electric and Hydraulic Type)

-          Pressure Relief Valve : Conventional Type, Balance Type, Pilot Type

General process


  1. Recording
  2. First Testing
  3. Dismantling, Cleaning and Inspection
  4. Machining
  5. Seating Faces
  6. Flange Faces
  7. Replacing Gasket
  8. Re-Assembling and Testing
  9. Painting
  10. Certification

Test with : API 598, API 527 ANSI B. 16. 34, or B. 16. 104

We can repair all common size of valves accustomed with International Standard

American National Standard Institute (ANSI)

American Petroleum Institute (API)

Manufacturers Standarization Society (MSS)


Race Face Check Valve

Lapping Gate Valve

Testing Control Valve

Calibration Control Valve