Electrostatic Precipitator Spares

Emitting/Discharge Electrodes:

NTNN offers replacement Emitting / Discharge Electrodes for many Precipitator designs. The standard Emitting Electrode is designed for longer life with a high tensile strength. For Discharge Electrodes of Alstom style ESP’s, the shrouded hook ends of Electrodes are manufactured with the Electrode wire inserted through the shroud prior to forming the hook, thus eliminating the requirement for crimping. We manufacture different designs of Discharge Electrodes to OEM standards, using varieties of raw materials. There are many more designs & shapes of Discharge Electrodes, which are part of our product range, but not displayed below. Please contact us for all your requirements of Discharge / Emitting Electrodes.

Collecting Electrodes:

Collecting Plates / Electrodes are manufactured in our groups’ facility. In house engineering and design, and a dedicated quality assurance staff ensures that you receive the most durable & precision made Collecting Electrodes to suit all most all styles of Electrostatic Precipitators.
We, at NTNN, offer Collecting Plates in thickness of 1.25 to 1.6 mm, to different profiles and in lengths up to 16.5 meters.

All Types of ESP Insulators & Heaters:


NTNN High Voltage Porcelain Insulators Mechanically support & Electrically isolate the ESP Electrodes from the casing. Support Insulators are suitably designed to withstand required load as well as temp. We offer Cylindrical / Conical support Insulators & shaft Insulators for different types of ESPs.

  • Excellent electric resistance
  • Withstands temperature variations
  • High functional efficiency
  • Precision technical design
  • Withstand high voltage & mechanical load

  • Types
    • Support/Conical Insulator
    • Support Insulator
    • Shaft Insulator
    • Pin Insulator
    • Wall Through Bushing Insulator

  • Hopper Heaters: The fly ash from the flue gases passing through the ESP fields are collected in the hoppers below and then carried by ash handling system. Due to moisture content and low temperature inside hoppers, choking & accumulation of fly ash occurs frequently affecting the performance of ESP. Heaters are provided on all 4 sides of hoppers to maintain temperature inside hoppers for effective flow of fly ash to ash disposal system. High Temperature Hopper Heaters are manufactured from incoloy for ESP application for long life. These are designed to withstand Shock & Vibration and when installed on the sides of Hopper and insulated, they provide a blanket Heat Coverage effect.

  • Insulator Heaters: For optimum performance of the ESP the temperature inside the ESP should be maintained suitably. The air ingress through the insulator openings are to be kept hot and for this purpose, heating elements are provided on the Insulators.


NTNN has acquired an unrivalled reputation in the field of supply of Replacement Parts for Electrostatic Precipitators, for both Dry & Wet designs. To bring comprehensive facilities offering ESP parts to customers, a pioneering initiative has been taken for the first time that we offer replacement parts for all makes & types of both Wet & Dry ESPs under one roof.

We, at NTNN,started our facility with manufacturing parts for just for Dry types of ESPs. But subsequently we are equipped to supply O&M spares for Wet Electrostatic Precipitators(WESP).


WESP technology is very popular in various types of applications since removal of fine particles has been very effective& it also provides low energy consumption compared to other dust separation methods. We are familiar with all designs of WESP and are able to provide .Wet Electrostatic Precipitators (WESPs) are also used for simultaneous removal of acid gases and particulate matter. WESP technologyis very effective in removing fine acid mists and fine particulates, which cannot be collected as efficiently with a dry ESP. A WESP also offers the additional benefit of some heavy metal removal. We have observed regular requirements of replacement spares for WESP & hence we added these spares to our range.


NTNN Replacement spares for WESP provides unparalleled performance and reliability for a variety of utility and industrial applications.


Our Product range includes all the fast moving high voltage internals consisting of Rigid Electrode type Ionizers, Supports, Insulators etc etc.We offer Ionizing Rods(discharge electrodes) using different types of materials which includes LEAD, Stainless steel & any other customised raw materials as per the plants requirements.


Material of construction can range from:
  • Carbon Steel
  • LEAD
  • Stainless Steel
  • FRP
  • Hastelloy

A WESP can be configured with flat plate Collecting Electrodes or up-flow tubular structure. Each industry and plant site is therefore unique. Due to the saturated conditions of the process gas WESPs are susceptible to corrosion. Proper selection of the materials of construction depends upon analysis of the process gas, expected pH and chloride levels in the water.


Different manufacturers of WET Electrostatic Precipitator use different designs & shapes of Ionizing Rods & Collecting Electrodes. We are in a position to supply all these parts as per customers’ requirements.


Wet Electrostatic Precipitators are used in a wide range of applications including, hazardous and medical waste incinerators, metals refining, Sulphite Pulp Mill Recovery Boilers, Copper Roasters, Sulphuric Acid Plants, Smelters and Wood Dryers including Oriented Strand Board (OSB), Medium-density Fibreboard (MDF) or Pellet Mill dryers.


With state-of-the-art manufacturing facility& trained team of qualified engineers, NTNN can offer replacement parts for all the popular designs of WET & Dry ESP.

Soot Blowers

Soot Blower Spares

  1. Lance Tubes
  2. Feed Tubes
  3. SBV Head Assembly

What is a Soot blower ?

A soot blower is a system for removing the soot that is deposited on the furnace tubes of a boiler during combustion.

Types of Soot Blowers:

  • Wall Blower.
  • Long Retractable Soot Blower
  • Air Heater Blower.

Steam blowing medium:

  • Steam
  • Air

Steam is normally used as a medium for blowing away the soot since capital cost of steam pressure reducing equipment and drain is less than the cost of compressors, motors and control of air systems.

Soot deposited on the heating surfaces of a boiler acts as a heat insulator. The result is that less heat is transferred to the water to raise steam and more heat is wasted up the chimney. This leads to higher fuel consumption and/or poor steaming.

A soot fire can be damaging to a boiler because it can cause localized hotspots to occur in the tubes. These hotspots may reach temperatures that weaken the materials of the tubes. Soot blowers reduce the risk of soot fires and their resulting damage.

A sootblower may be operated manually or by a remotely controlled motor. The soot, which is removed from the heating surfaces, will be blown out with the flue gases. If the boiler is equipped with a dust collector, it will trap the soot. Otherwise, the soot will be ejected into the outside air through the chimney stack.

What do we do for Soot Blowers?

We, at NTNN, offer spares for Soot Blowers and Wall Deslaggers installed in various plants. We regularly manufacture Lance Tubes, Feed Pipes, Swivel Tube Assembly, SBV Head Assembly and other such fast moving parts of Soot Blowers.

We understand that plants have in service, many such Soot Blowers and Wall Deslaggers and are sure that there may be requiring various O&M spares for the same. We shall welcome entire requirement for Soot Blower spares or a budgetary quote request for spares for Soot Blowers and Wall Deslaggers.