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2019-2-20 · 292 Chapter 14 Stack—an opening at the top of the boiler that is used to remove flue gas, p. 297. Steam drum—the top drum of a boiler where all of the generated steam is collected before entering the distribution system, p. 293. Steam trap—a device used to remove condensate or liquid from steam systems, p. 294. Superheated steam—steam that has been heated to a very …
Get Price2014-4-1 · ENERGY, RESOURCES AND ENVIRONMENTAL TECHNOLOGY Chinese Journal of Chemical Engineering, 22(4) 455â€'468 (2014) DOI: 10.1061/S1004-9541(14)60054-9 Integration of a Gas Fired Steam Power Plant with a Total Site Utility Using a New Cogeneration Targeting Procedure Sajad Khamis Abadi1, Mohammad Hasan Khoshgoftar Manesh2, Marc A. Rosen3, …
Get Price2021-8-20 · The steam can be as hot as 560ºC. The pressures can be as high as 250 bar. To keep the power plant up and running, with minimum erosion and corrosion of steam turbine, steam boiler and condenser, we have developed fully integrated Steam and Water Analysis Systems (SWAS) that provide exact, precise measurements on all these critical parameters.
Get PriceIn a plant, CO2 gas and superheated steam are used as the main and the secondary working fluids, respectively, of a closed dual fluid regenerative gas turbine power plant. Since coal gas …
Get PriceAfter replacing a boiler at Caritas Medical Centre earlier, Towngas continued its successful collaboration with HA by extending the use of gas to the steam boiler in its Chai Wan Laundry. By using town gas as its main fuel, the steam boiler conversion reduces greenhouse gas emission and contributes to environmental protection.
Get PriceUniversal steam boiler CSB. Available in six output sizes, from 300 to 5,200 kg/h for pressures ranging between 0.5 and 16 bar. High efficiency rating of up to 95.3% with integrated economiser and helical heat exchanger tubes. Versatile design for use with different fuel types and as a multi-fuel firing unit (oil, gas, biogas, hydrogen)
Get PriceSTEAM BOILERS. Thermax offers coil type steam boilers in the range of 50 to 850 kg steam per hour. The coil type boiler generates steam instantly and is extremely easy to install and commission. These boilers are safe, reliable and designed to operate on a wide range of liquid and gaseous fuels including heavy oil, light oil, gas, and dual fuel ...
Get PriceThe hot flows of flue gas from the upstream combustion processes are conducted into the heat recovery boiler and used for steam generation purposes. Thanks to its modular design and compact dimensions, it is the ideal choice for both new plants and modernisation projects alike.
Get Price2016-10-25 · Working principles The Alfa Laval Aalborg HPNC boiler is designed to operate in a closed loop system, a so called thermo syphon system, where circulation is ensured through gravity. The steam cycle is completely sealed off to remove any risk of corrosion. Steam generation is taking place in two concentrically
Get PriceSteam Boiler - Definition, Working Principle, Types, and . Nonetheless, the report has additionally laid out the components that can lull the development of the Steam Boiler Market. Key Drivers. The report includes the key driving forces prevailing in the Steam Boiler Market.
Get Price0.5 Ton -10 Ton Oil Gas Fired Steam Boiler by Henan Yuanda . 0.5 ton -10 ton Oil Gas Fired steam boiler 1.Fuel:heavy oil,diesel,natural gas,lpg, 2.Capacity: 500g,1 ton,2 ton 3 ton,4 ton,5 ton,6 ton,8 ton,10 ton steam boiler 3.Fire tube structure 3 pass 4.Horziontal type industrial steam boiler 5.Plc touching screen intelligent control system 6.Boiler full automatic operation Boiler mian part 1 set
Get PriceSTEAM BOILERS. Thermax offers coil type steam boilers in the range of 50 to 850 kg steam per hour. The coil type boiler generates steam instantly and is extremely easy to install and commission. These boilers are safe, reliable and designed to operate on a wide range of liquid and gaseous fuels including heavy oil, light oil, gas, and dual fuel ...
Get Price2019-2-20 · 292 Chapter 14 Stack—an opening at the top of the boiler that is used to remove flue gas, p. 297. Steam drum—the top drum of a boiler where all of the generated steam is collected before entering the distribution system, p. 293. Steam trap—a device used to remove condensate or liquid from steam systems, p. 294. Superheated steam—steam that has been heated to a very high temperature so ...
Get PriceSteam traps play the important role in maintaining the productivity and efficiency of steam system. This exhaustive guide answers all the questions one might have about steam traps, their working principles, troubleshooting etc. What is a steam trap? A Steam trap an automatic drain valve which distinguishes between steam and condensate.
Get Price2021-8-16 · Optimize boiler system operational efficiency. Refinery boilers operate at highly variable pressures. Vigilance is required for operational efficiency and reliability. A problem in a 1,500 psig (10.3 MPa) boiler could result in severe steam turbine damage. Hydrocarbon processors also face unique challenges like boiler system hydrocarbon intrusion.
Get Price10t coal boiler industrial factory direct supply philippines. 8t Industrial Biomass Pellet Steam Boiler Manufacturer. 8t Industrial Biomass Pellet Hot Water Boiler 8t Industrial Biomass Pellet Hot Water Boiler Manufacturer Case In 2018 Sitong boiler company delivery 1.4MW gas fired hot water to Philippines for swimming pool the is a safe and high (98%) heating equipment with high automation it ...
Get PriceIn a plant, CO2 gas and superheated steam are used as the main and the secondary working fluids, respectively, of a closed dual fluid regenerative gas turbine power plant. Since coal gas composed ...
Get PriceSyngas Steam Boiler 5 Ton - dorfwirt-hagendorf.de. 35 tons gas boiler price. 35 tons of hot water boiler offer - knorrs . 35 ton steam boiler generate electricity - delunchbar.nl. 3 sets of 35 tons of biomass power generation boiler CFB boiler and In Dec 2012 there was a set 75 ton coal fired steam boiler 36.3 bar(a) 440176;C Biomass Power
Get Price2021-8-27 · The Velox boiler is a forced circulation water tube boiler that uses high velocity to rapidly produce steam. The principle of the Velox boiler is built on the velocity of the gas, which moves faster than the speed of sound and increases the rate of heat transfer. ... and boiler working as an integrated system. Much of the efficiency of the boil ...
Get PriceFusible Plug in Boiler. Fusible Plug is a fitting used in Steam Boilers to enhance the safety during operation. It's working depends upon the water level in the Boiler shell. It is a threaded metallic cylindrical object, with a tapered hole in it which goes through its entire length. It …
Get Price0.5 Ton -10 Ton Oil Gas Fired Steam Boiler by Henan Yuanda . 0.5 ton -10 ton Oil Gas Fired steam boiler 1.Fuel:heavy oil,diesel,natural gas,lpg, 2.Capacity: 500g,1 ton,2 ton 3 ton,4 ton,5 ton,6 ton,8 ton,10 ton steam boiler 3.Fire tube structure 3 pass 4.Horziontal type industrial steam boiler 5.Plc touching screen intelligent control system 6.Boiler full automatic operation Boiler mian part 1 set
Get PriceSTEAM BOILERS. Thermax offers coil type steam boilers in the range of 50 to 850 kg steam per hour. The coil type boiler generates steam instantly and is extremely easy to install and commission. These boilers are safe, reliable and designed to operate on a wide range of liquid and gaseous fuels including heavy oil, light oil, gas, and dual fuel ...
Get Price2019-2-20 · 292 Chapter 14 Stack—an opening at the top of the boiler that is used to remove flue gas, p. 297. Steam drum—the top drum of a boiler where all of the generated steam is collected before entering the distribution system, p. 293. Steam trap—a device used to remove condensate or liquid from steam systems, p. 294. Superheated steam—steam that has been heated to a very high temperature so ...
Get PriceSteam traps play the important role in maintaining the productivity and efficiency of steam system. This exhaustive guide answers all the questions one might have about steam traps, their working principles, troubleshooting etc. What is a steam trap? A Steam trap an automatic drain valve which distinguishes between steam and condensate.
Get Price2021-8-16 · Optimize boiler system operational efficiency. Refinery boilers operate at highly variable pressures. Vigilance is required for operational efficiency and reliability. A problem in a 1,500 psig (10.3 MPa) boiler could result in severe steam turbine damage. Hydrocarbon processors also face unique challenges like boiler system hydrocarbon intrusion.
Get Price10t coal boiler industrial factory direct supply philippines. 8t Industrial Biomass Pellet Steam Boiler Manufacturer. 8t Industrial Biomass Pellet Hot Water Boiler 8t Industrial Biomass Pellet Hot Water Boiler Manufacturer Case In 2018 Sitong boiler company delivery 1.4MW gas fired hot water to Philippines for swimming pool the is a safe and high (98%) heating equipment with high automation it ...
Get PriceIn a plant, CO2 gas and superheated steam are used as the main and the secondary working fluids, respectively, of a closed dual fluid regenerative gas turbine power plant. Since coal gas composed ...
Get PriceSyngas Steam Boiler 5 Ton - dorfwirt-hagendorf.de. 35 tons gas boiler price. 35 tons of hot water boiler offer - knorrs . 35 ton steam boiler generate electricity - delunchbar.nl. 3 sets of 35 tons of biomass power generation boiler CFB boiler and In Dec 2012 there was a set 75 ton coal fired steam boiler 36.3 bar(a) 440176;C Biomass Power
Get Price2021-8-27 · The Velox boiler is a forced circulation water tube boiler that uses high velocity to rapidly produce steam. The principle of the Velox boiler is built on the velocity of the gas, which moves faster than the speed of sound and increases the rate of heat transfer. ... and boiler working as an integrated system. Much of the efficiency of the boil ...
Get PriceFusible Plug in Boiler. Fusible Plug is a fitting used in Steam Boilers to enhance the safety during operation. It's working depends upon the water level in the Boiler shell. It is a threaded metallic cylindrical object, with a tapered hole in it which goes through its entire length. It …
Get Price2016-10-25 · Working principles The Alfa Laval Aalborg HPNC boiler is designed to operate in a closed loop system, a so called thermo syphon system, where circulation is ensured through gravity. The steam cycle is completely sealed off to remove any risk of corrosion. Steam …
Get PriceFind out about the principles of steam engineering and heat transfer, including a comprehensive guide to engineering best practice covering all aspects of steam and condensate systems; from the boiler house and steam distribution system up to the point of use; through the condensate recovery system and returning to the boiler. Virtually all major applications and products are discussed.
Get PriceAfter replacing a boiler at Caritas Medical Centre earlier, Towngas continued its successful collaboration with HA by extending the use of gas to the steam boiler in its Chai Wan Laundry. By using town gas as its main fuel, the steam boiler conversion reduces greenhouse gas emission and contributes to environmental protection.
Get PriceHeat recovery steam generator is a high-efficiency steam boiler that uses hot gases from a gas turbine for reciprocating engine to generate steam in a thermodynamic Rankine Cycle. This system is able to generate steam at different pressure levels according to …
Get Price2021-9-2 · Numerous integrated scope options are available, including supplementary firing for peak power output, SCR, CO catalysts for emissions control, accessories for noise abatement, and exhaust gas bypass systems for simple cycle operation in combined-cycle configuration.
Get PriceE-boilers convert electrical power into steam or hot water, reducing the use of fossil energies and reducing CO2 emissions of the asset and enabling flexible solutions for the electrification of heat production. Stork is your partner in the UK, Netherlands and Belgium for the implementation of Zeta E-boilers.
Get PriceContact a gas or mechanical contractor, licensed with Technical Safety BC, to install your boiler (s). Complete your steam boiler rebate application and email it to [email protected] within 365 days of the purchase date (as shown on the paid invoice). Be sure to provide copies of the fully paid invoice including make and model ...
Get Price2015-4-15 · Recovery Steam Generators are key components in the combined cycle. Starting from the early 90's, we began developing our proprietary HRSG design for: - Horizontal gas path, natural circulation, cold casing and top supported HRSG. - Vertical gas path and assisted circulation HRSG.
Get Price2020-8-9 · The gas jets play onto a heat exchanger connected to a pipe carrying cold water. The heat exchanger takes the heat energy from the gas jets and heats the water to something like 60°C (140°F). Photo: The gas jets inside a boiler fire up to heat the water. Natural gas burns blue when it has the right amount of oxygen.
Get Price2021-8-31 · SYNOPSIS. Mini boiler is convert water into steam energy. A mini boiler is consisting of a boiler, heater and gate valve. This pressurized steam is given to the generator. The output of this generator is connected to the Battery or system grid. The battery is connected to the inverter. The inverter is used to convert DC voltages to AC voltages.
Get PriceUniversal steam boiler CSB. Available in six output sizes, from 300 to 5,200 kg/h for pressures ranging between 0.5 and 16 bar. High efficiency rating of up to 95.3% with integrated economiser and helical heat exchanger tubes. Versatile design for use with different fuel types and as a multi-fuel firing unit (oil, gas, biogas, hydrogen)
Get Price2018-11-14 · the compression phase, the gas-air mixture is ignited by a small amount of liquid pilot fuel. After the working phase the exhaust gas valves open and the cylinder is emptied of exhaust gases. The inlet air valves open when the exhaust gas valves close, and the process starts again. The dual-fuel engine is also equipped with a back-up fuel system.
Get Price2013-3-13 · systems, regardless of the emitter principle in question, and these must be strictly forbidden by appropriate instruction of the Figure 6: Sectional view of a modern three-pass steam boiler with integrated probe system inside protective sleeve.
Get Price2014-1-29 · for evaporating steam from other exhaust gas boilers.the design and performance is a result of solid experience and high technical standards. the boiler is supplied with a circular furnace, has a convection section and is designed for forced draught. the boiler will work with natural circulation. the boiler meets high equipment standard and is ...
Get Price2010-11-15 · the steam demand from boiler varythe steam demand from boiler vary depending upon change in process requirement or power requirement. the fuel fed to the boiler should be controlled tofed to the boiler should be controlled to give the necessary quantity of steam. the steam …
Get Price2021-8-5 · Boilers are used in power plants in order to produce high pressured steam, so that the plant can generate electricity.The process that does this is known as the Rankine cycle.The boiler takes in energy from some form of fuel such as coal, natural gas, or nuclear fuel to heat water into steam.All but a small fraction of the world's primary energy comes from fuels, and about three-quarters of ...
Get Price2021-4-7 · The GE pre-engineered STAGTM (STeam And Gas) combined-cycle power generation systems consist of factory-packaged components, includ- ing an integrated control system. It may contain from one to six gas turbines, including the MS5001, the MS6001, the MS7001, or MS9001. The STAG combined cycles include single- and
Get Price2020-12-17 · The commercial development of steam and gas turbine combined cycles has proceeded in parallel with gas turbine development. The first gas turbine installed in an electric utility in the United States was applied in a combined cycle. This was a 3.5 MW gas turbine that used the energy from the exhaust gas to heat feedwater for a 35-MW conventional
Get Price2021-2-15 · live-steam conditions of approximately 100 bar and 520˚C and, as an option, controlled steam extraction at a pressure of between 2 and 16 bar. Customized plants of modular design Thanks to the modular design principle that has been adopted, the ATP1 and ATP2 steam turbines cover the full power range with only two sizes of casing. By
Get Price2015-3-13 · Integrated gasification combined cycle coal (IGCCC) ... Components and working principle of . steam generator (boiler) There are different type of steam generator. Basic components of a steam generator are: Furnace: to burn the fuel and generate heat, the heat is
Get Price0.5 Ton -10 Ton Oil Gas Fired Steam Boiler by Henan Yuanda . 0.5 ton -10 ton Oil Gas Fired steam boiler 1.Fuel:heavy oil,diesel,natural gas,lpg, 2.Capacity: 500g,1 ton,2 ton 3 ton,4 ton,5 ton,6 ton,8 ton,10 ton steam boiler 3.Fire tube structure 3 pass 4.Horziontal type industrial steam boiler 5.Plc touching screen intelligent control system 6.Boiler full automatic operation Boiler mian part 1 set
Get PriceSTEAM BOILERS. Thermax offers coil type steam boilers in the range of 50 to 850 kg steam per hour. The coil type boiler generates steam instantly and is extremely easy to install and commission. These boilers are safe, reliable and designed to operate on a wide range of liquid and gaseous fuels including heavy oil, light oil, gas, and dual fuel ...
Get Price2019-2-20 · 292 Chapter 14 Stack—an opening at the top of the boiler that is used to remove flue gas, p. 297. Steam drum—the top drum of a boiler where all of the generated steam is collected before entering the distribution system, p. 293. Steam trap—a device used to remove condensate or liquid from steam systems, p. 294. Superheated steam—steam that has been heated to a very …
Get PriceSteam traps play the important role in maintaining the productivity and efficiency of steam system. This exhaustive guide answers all the questions one might have about steam traps, their working principles, troubleshooting etc. What is a steam trap? A Steam trap an automatic drain valve which distinguishes between steam and condensate.
Get Price2021-8-16 · Optimize boiler system operational efficiency. Refinery boilers operate at highly variable pressures. Vigilance is required for operational efficiency and reliability. A problem in a 1,500 psig (10.3 MPa) boiler could result in severe steam turbine damage. Hydrocarbon processors also face unique challenges like boiler system hydrocarbon intrusion.
Get Price10t coal boiler industrial factory direct supply philippines. 8t Industrial Biomass Pellet Steam Boiler Manufacturer. 8t Industrial Biomass Pellet Hot Water Boiler 8t Industrial Biomass Pellet Hot Water Boiler Manufacturer Case In 2018 Sitong boiler company delivery 1.4MW gas fired hot water to Philippines for swimming pool the is a safe and high (98%) heating equipment with high …
Get PriceIn a plant, CO2 gas and superheated steam are used as the main and the secondary working fluids, respectively, of a closed dual fluid regenerative gas turbine power plant. Since coal gas …
Get PriceSyngas Steam Boiler 5 Ton - dorfwirt-hagendorf.de. 35 tons gas boiler price. 35 tons of hot water boiler offer - knorrs . 35 ton steam boiler generate electricity - delunchbar.nl. 3 sets of 35 tons of biomass power generation boiler CFB boiler and In Dec 2012 there was a set 75 ton coal fired steam boiler 36.3 bar(a) 440176;C Biomass Power
Get Price2021-8-27 · The Velox boiler is a forced circulation water tube boiler that uses high velocity to rapidly produce steam. The principle of the Velox boiler is built on the velocity of the gas, which moves faster than the speed of sound and increases the rate of heat transfer. ... and boiler working as an integrated system. Much of the efficiency of the boil ...
Get PriceFusible Plug in Boiler. Fusible Plug is a fitting used in Steam Boilers to enhance the safety during operation. It's working depends upon the water level in the Boiler shell. It is a threaded metallic cylindrical object, with a tapered hole in it which goes through its entire length. It is usually of brass, bronze or even gunmetal.
Get Price2021-9-2 · Numerous integrated scope options are available, including supplementary firing for peak power output, SCR, CO catalysts for emissions control, accessories for noise abatement, and exhaust gas bypass systems for simple cycle operation in combined-cycle configuration.
Get PriceContact a gas or mechanical contractor, licensed with Technical Safety BC, to install your boiler (s). Complete your steam boiler rebate application and email it to [email protected] within 365 days of the purchase date (as shown on the paid invoice). Be sure to provide copies of the fully paid invoice including make and model ...
Get Price2015-4-15 · Recovery Steam Generators are key components in the combined cycle. Starting from the early 90's, we began developing our proprietary HRSG design for: - Horizontal gas path, natural circulation, cold casing and top supported HRSG. - Vertical gas path and assisted circulation HRSG.
Get Price2020-4-16 · • Steam boilers are used to produce steam for process heating, space heating and water heating. They consist of a burner, a pressure vessel containing a heat exchanger, and associated burner control systems and boiler control equipment. • Steam boilers are available in a range of different designs and efficiencies. The ETL aims to encourage the
Get Price2013-3-13 · systems, regardless of the emitter principle in question, and these must be strictly forbidden by appropriate instruction of the Figure 6: Sectional view of a modern three-pass steam boiler with integrated probe system inside protective sleeve.
Get Price2014-1-29 · for evaporating steam from other exhaust gas boilers.the design and performance is a result of solid experience and high technical standards. the boiler is supplied with a circular furnace, has a convection section and is designed for forced draught. the boiler will work with natural circulation. the boiler meets high equipment standard and is ...
Get Price2010-11-15 · the steam demand from boiler varythe steam demand from boiler vary depending upon change in process requirement or power requirement. the fuel fed to the boiler should be controlled tofed to the boiler should be controlled to give the necessary quantity of steam. the steam …
Get Price2018-3-22 · The Aalborg AV-6H exhaust gas boiler is a water tube boiler for heat recovery, typically after gas engine. The boiler comes in a horisontal layout and compact work-shop assembled module. It is easy and fast to install while allowing maximised access for convenient maintenance and service. • High-efficient counterflow design for heating of hot ...
Get PriceAn integrated power plant comprises a gas-turbine set with a compressor, a combustion chamber and a gas turbine, a heat-recover boiler arranged downstream of the gas turbine, and a water/steam circuit with a steam turbine, a condenser, a feedwater tank and a separately fired steam generator having a flue-gas NOx-reduction unit arranged on the flue-gas side downstream of the steam generator ...
Get PriceThe steam drum is furnished with the necessary internal fittings to ensure an even distribution of the feed water, of the circulation water from the exhaust boiler and to ensure a sufficient dryness of steam. The burner cone in the furnace opening are an integrated part and accordingly no refractory are provided in the top of the furnace room.
Get Price0.5 Ton -10 Ton Oil Gas Fired Steam Boiler by Henan Yuanda . 0.5 ton -10 ton Oil Gas Fired steam boiler 1.Fuel:heavy oil,diesel,natural gas,lpg, 2.Capacity: 500g,1 ton,2 ton 3 ton,4 ton,5 ton,6 ton,8 ton,10 ton steam boiler 3.Fire tube structure 3 pass 4.Horziontal type industrial steam boiler 5.Plc touching screen intelligent control system 6.Boiler full automatic operation Boiler mian part 1 set
Get PriceSTEAM BOILERS. Thermax offers coil type steam boilers in the range of 50 to 850 kg steam per hour. The coil type boiler generates steam instantly and is extremely easy to install and commission. These boilers are safe, reliable and designed to operate on a wide range of liquid and gaseous fuels including heavy oil, light oil, gas, and dual fuel ...
Get Price2019-2-20 · 292 Chapter 14 Stack—an opening at the top of the boiler that is used to remove flue gas, p. 297. Steam drum—the top drum of a boiler where all of the generated steam is collected before entering the distribution system, p. 293. Steam trap—a device used to remove condensate or liquid from steam systems, p. 294. Superheated steam—steam that has been heated to a very high temperature so ...
Get PriceSteam traps play the important role in maintaining the productivity and efficiency of steam system. This exhaustive guide answers all the questions one might have about steam traps, their working principles, troubleshooting etc. What is a steam trap? A Steam trap an automatic drain valve which distinguishes between steam and condensate.
Get Price2021-8-16 · Optimize boiler system operational efficiency. Refinery boilers operate at highly variable pressures. Vigilance is required for operational efficiency and reliability. A problem in a 1,500 psig (10.3 MPa) boiler could result in severe steam turbine damage. Hydrocarbon processors also face unique challenges like boiler system hydrocarbon intrusion.
Get Price10t coal boiler industrial factory direct supply philippines. 8t Industrial Biomass Pellet Steam Boiler Manufacturer. 8t Industrial Biomass Pellet Hot Water Boiler 8t Industrial Biomass Pellet Hot Water Boiler Manufacturer Case In 2018 Sitong boiler company delivery 1.4MW gas fired hot water to Philippines for swimming pool the is a safe and high (98%) heating equipment with high automation it ...
Get PriceIn a plant, CO2 gas and superheated steam are used as the main and the secondary working fluids, respectively, of a closed dual fluid regenerative gas turbine power plant. Since coal gas composed ...
Get PriceSyngas Steam Boiler 5 Ton - dorfwirt-hagendorf.de. 35 tons gas boiler price. 35 tons of hot water boiler offer - knorrs . 35 ton steam boiler generate electricity - delunchbar.nl. 3 sets of 35 tons of biomass power generation boiler CFB boiler and In Dec 2012 there was a set 75 ton coal fired steam boiler 36.3 bar(a) 440176;C Biomass Power
Get Price2021-8-27 · The Velox boiler is a forced circulation water tube boiler that uses high velocity to rapidly produce steam. The principle of the Velox boiler is built on the velocity of the gas, which moves faster than the speed of sound and increases the rate of heat transfer. ... and boiler working as an integrated system. Much of the efficiency of the boil ...
Get PriceFusible Plug in Boiler. Fusible Plug is a fitting used in Steam Boilers to enhance the safety during operation. It's working depends upon the water level in the Boiler shell. It is a threaded metallic cylindrical object, with a tapered hole in it which goes through its entire length. It …
Get Price