Gauge glass for boilers and process vessels lj star. It indicates the level of water in the boiler so the operator can be assured that the level is within safe limits. In low pressure steam boilers, two methods of determining water level are try cocks and gauge glasses. The gage glass must be kept clean to ensure the visible water level in the chamber accurately represents the water level in the boiler. Ibr boiler gauge glass ibr boiler reflex gauge glass. A sight glass or water gauge is a type of level sensor, a transparent tube through which the operator of a tank or boiler can observe the level of liquid contained within.
The purpose of the water column is to slow down the turbulence of the boiler water to obtain a more accurate reading of the water level in the gauge glass. Bronze gauge glass valves, boiler mounting, glass tube assembly, protector glass assembly, manufacturer, exporter, supplier, india highlights an iso 9001. After the pressure reaches approximately 15 psig, close the boiler air vents. Check that the operating systems are working properly, including the boiler and the boiler feed. The gauge glass will fail due to stress, temperature and fittings problem. Glass level gauge gauge series 03 selection guide 0405 seriesl 0607 seriesm 0809 seriesh 101 1 tubular gaugesu 12 tubular gauge value26 weld padwpm 1415 gauge connection options 1617 standard visible length chart 18 optional accessories 1920 index. Note the patterned backplate to help reading and toughened glass shroud. The prism molded into the reflex borosilicate glass on the process side will display black for water, and white for steam. When testing the gauge glass steam connection, the water cock should be closed. The other is usually a remote reading gauge in the control room which should regularly be compared with the boiler. Duran tubular gage glass is offered as red line, standard, heavy wall, high pressure, and heavy wall red line. The worry free, leak free alternative to tubular gauge glass. Here the water is at the top nut, the maximum working level. A stain or coating can develop on the inside of the glass where it is in contact with boiling water.
If the is a problem occur during inspection, this gauge glass have to be repair or replace. This is also to check that, water and steam cocks are not leaking. Boiler gage glass installations steam generating boilers are equipped with at least one gage glass. After draining water from the sight glass, there is nothing come out, both steam and water cocks are good in. The water gage glass on a boiler enables the operator to visually observe and verify the actual water level in the boiler. Watch the gauge glass on the boilers low water cutoff to make sure the proper level is maintained. We are the manufacturer of heat resistant glasses from chennaiindia to globally and furnaces and boiler peep hole sight glasses. The water gauge glass and water test cocks are installed on the column. This is a physical mean of showing the correct level of water in the boiler. Boiler waterlevel the first duty when taking over a boiler room shift is to make certain the pipe, fittings and valves. In this article,i have discuss boiler gauge glass blow through procedure. Combination temperaturepressure gauge or altitudetemperature gauge d. These gages can be used as process steam gages and direct reading sight glass for boilers in compliance with a. There is always a possibility for the fitting of the boiler to have failure.
Boiler gauge glass regular gauge glass 58 x 8 58gg0812 product information technical details. Pdf analysis of gauge glass failure possibility for boiler nur. Shut blowdown valves off after water level in boiler gauge glass drops about 4 see step 7. Because gauges and gauge glass are important to understanding your boilers performance, any failure of the gauges or damage to the gauge glass can have potentially serious consequences. Approximately 60 glass types are produced in large. Also if you want a gauge glass cutter that works better buy a squeeze and pop cutter or wheelerrex.
The level must be high enough to completely cover all parts of the. Center to center distance for vessel connections inch mm no corrosion up to 150f 66c psig kpa steam boiler service up to 425f 218c psig kpa. Tubular glass gauges for low pressure process and boiler drum application. Introducing rites high quality reflex water gauge at a very affordable price. The boiler operates under high temperature and pressure. Steam boiler sight glass, how to use the sight gauge to. Boiler gauge glass blow through procedure marinerspoint. It is an emergency case of necessity because the water level must be maintained for proper functioning of the boiler. Star announces gauge glass for boilers and process. Today we are discussed about the top 50 boiler information booster question answers these question is very helpful for those who worked in power plant as a boiler first class, boiler operator, boiler fireman, boiler operation engineering, energy manager or as a energy auditor these question answers are selected by the well. Pressure ratings range from 90 psi to 600 psi depending on end finish, diameter, and. There must be two independent means of determining the water level, one of which must be a direct reading gauge glass. We explain where the sight glass will be found, how to read its water level, and the relationship between the sight glass reading and the procedure for adding makeup water to the boiler. The series 900 steam boiler is available with firing inputs from 600,000 btuhr to 900,000 btuhr.
Tubular gauge glass and industrial boiler gauge repair. Gauge valve gauge valve 22 series 10 23 series 20 24. High pressure clear standard wall tubular gage glass from. For use with low maintenance stuffing box gauge valves nipple connected models. If you need your items by a certain date, please contact us prior to placing your order. Top 50 boiler information booster question answers. Any sign of corrosion or erosion indicates that a new glass is required. Series 900 steam low pressure boiler superior boiler. Marine boilers marine engineering knowledge part 1.
Bronze gauge glass valves, boiler mounting, glass tube. The gauge glass is fitted to your boilers gauge frame to allow the boiler water level to be seen. End finishes may be cut, ground, or fire polished depending on application. The steam line rb20 units are designed for steam service to 300wsp. Hjc40 welding gauge detect boilers bridges pipes gage metric. Steamer boiler replacement part 12 water gauge valve set for 58 diameter sight glass water gauge valves are made of brass with aluminum red wheels. This gives the glass outstanding vibration and shock impactresistant properties. Raw makeup water feedwater contains dissolved oxygen, suspended solids such as dirt, minerals and organic materials that can cause corrosive failure and a buildup of scale inside the boiler.
The asme boiler and pressure vessel code section i establishes the requirements for steam drum water level measurement in fired steam drums. However, many millions of btus can be delivered by creating an efficient, fully modular system of multiple vessels properly sequenced by a control panel. Boiler waterlevel the first duty when taking over a boilerroom shift is to make certain the pipe, fittings and valves. For testing the water level in the boiler should the water glass be out of service temporarily for any reason. Level and flow control engineers manufacturing and supplying boiler gauge glasses and level gauges. Armored transparent flat glass liquid level gauges suitable for steam service on boiler drum, feedwater heater and other vessel level indication applications features suitable for indoor or outdoor installation. Blowdown tanks for high pressure process steam boilers. The orifices and glass will develop lime over time and need preventative maintenance cleaning or replacement. Type a, plain is designed for moderate pressure steam boilers and for liquid level indicators. Boiler gauge glass blow down procedure and maintenances. Gauge glass is available for fast delivery, even for mil spec and highpressure applications. Two water level indicators are used on all boilers. Sight glass level gauge with mica sheets, boilerlevel gauge 17 6.
Sale is for 2 valves, the top valve and the bottom valve with the drainage. Shut steam and water cocks than open the drain cock. Duran tubular gage glasses product information many years of experience allow schott to provide duran tubular gage glasses that are preferred in a wide variety of industrial and commercial applications. B1 is a reflection gauge for direct reading water level in steam boilers. One way to lower the amount of dissolved oxygen in feedwater is use a sparge tube. Colorport water level gauges, yarway, regulators emerson. Tubular type gauge glasses are assembled with heavy wall thickness glass tubes which can withstand hydro test pressure upto 30 bar and temp upto 300 deg c. Gauge glass blow down is made to know the boiler and gauge glass connection is clear or not and to give the exact water level in the boiler. After a time, this stain gives the appearance of water. Note that the frequency and method of blowdown may affect service life and performance of glass level gauges. The three basic types of gauge glass are noted below. However, if not properly cleaned and maintained, a gage glass can seem to show that there is sufficient water, when the boiler is actually operating in a low or low water condition. These thermostats open the control circuit if the temperature of the boiler exceeds the set point.
A steam boiler is a closed vessel, generally made of steel, in which water is heated by some source of heat produced by combustion of fuel and ultimately to generate steam. They are equipped with sight glasses with grooves for. With the boiler at its nowl, the gauge glass is approximately half full. Proper cleaning and maintenance of flat glass gages in steam service is vital for enhanced performance and service life. The purpose of this study is to find the failure possibility of the gauge glass through literature and simulation. In a boiler the gauge glass reading is very confusing. Gauge glasses are prone to damage from a number of sources, such as corrosion from the chemicals in boiler water, and erosion during blowdown, particularly at the steam end. Tubing is one of the worlds leading manufacturers of glass tubes, rods and profiles. Gauge glass lowest visible water level 51mm lowest permissible water level 25mm heating surface ce. Boiler gauge glass needs to be blow down, regularly, to make sure that it is showing the correct reading and there is no blockage in the line of water and steam. Electric boilers are furnished with both an adjustable automatic reset type high limit and a manual reset high limit thermostat with a manual reset button. Ensure you can track your boilers operations when you discuss gauge options with the experts at manleys boiler. Maximum permitted working pressure varies with length refer to.
Boiler gauge glass blow through procedure archives. Blow down the low water cutoff and its gauge glass. Apollo conbraco brand, made in usa, gauge valves come with complete instructions. This gauge comes ready to mount directly onto virtually any mcdonnell miller water column pump start control including 193, 194.
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