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Domestic hot water and heating series: gas hot water boiler, vacuum hot water boiler, vertical atmospheric pressure hot water boiler, electric hot water boiler Factory use, high temperature steam: wns fuel gas steam boiler, szs water tube steam boiler, vertical steam boiler, electric steam boiler

About Us

FANGKUAI is founded in 1998, which is a clean fuel boiler enterprise integrating R&D, manufacturing, sales and service. In the past 20 years of development and innovation, the company has grown into a global enterprise, and its products have been exported to more than 80 countries including Russia, Mongolia and Thailand, and have established long-lasting cooperative relations with local enterprises!

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cast iron hot water boiler and radiator system efficiency

  • Offshore price : $20000-$100000 Get a quote on the right form
  • Minimum order quantity : 1 set :cast iron hot water boiler and radiator system efficiency
  • Supply Capacity : 10 units/month :cast iron hot water boiler and radiator system efficiency
  • Manufacturer/Brand : Fangkuai boiler
  • Port : Anyang
  • payment terms : Letter of Credit, Wire Transfer, VISA

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Popular products


θrion Gas Fired Steam Boiler


Rated thermal efficiency: 100-104%

Fixed working pressure: ≤1.6MPa

Applicable fuel:natural gas etc.


Gas(oil) Fired Integrated Hot Water Boiler


Rated thermal efficiency:96-98%

Fixed working pressure:≤1.25MPa

Applicable fuel:Natural gas, light oil, etc.


H6 Gas Fired Hot Water Boiler


Rated thermal efficiency: 97.2-106%

Fixed working pressure:0.1MPa

Applicable fuel:Natural gas, etc.


T7 Vacuum Hot Water Boilerr


Rated thermal efficiency:≥105.5%

Fixed working pressure:-0.02MPa

Applicable fuel:Natural gas, etc.


V6 Gas Fired Hot Water Boiler


Rated thermal efficiency:97.2-104.4%

Fixed working pressure:1.0MPa

Applicable fuel:Natural gas, etc.


Electric Steam Boiler

Capacity:0.5-4.0 t/h

Rated thermal efficiency:98%

Fixed working pressure:≤1.25MPa

Applicable fuel:electric energy


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  • Best Practices in Modern Hydronic Heating - AN OVERVIEW

    with cast-iron sectional boilers, and most fire tube boilers allows full system flow to pass through boiler. 0 5 10 15 20 25 0 2 4 6 8 10 12 pressure drop (psi) flow rate (gpm) 100,000 Btu/hr ! compact mod/con 100,000 Btu/hr ! cast-iron sectional VENT conventional boiler! with low flow resistance Conventional boilersGet Price

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    Jan 08, 2016 · Many residential homes use boilers to heat water, and provide either hot water or steam for heating. Steam is distributed via pipes to steam radiators, and hot water can be distributed via baseboard radiators or radiant floor systems, or can heat air via a coil. Steam boilers operate at a higher temperature than hot water boilers, and are inherently less efficient.Get Price

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    Nov 07, 2013 · Boilers - Home Heating Steam and Hot Water Systems - Cast iron radiator not getting hot - Hi guys I had my boiler replaced about 6 month ago I now have a Budures g115 with the Logamatic. I have been told that I have cast iron baseboards on a venturi system. It's a two-story house with only 1 zone the kitchen has theGet Price

  • cast iron hot water boiler and radiator system efficiency

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  • Best Boiler Buying Guide - Consumer Reports

    Nov 10, 2021 · Steam is sent to radiators, while hot water flows to radiators or radiant heating systems. Boilers are fueled by natural gas, heating oil, propane, electricity or a biodiesel-oil blend.Get Price

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    When installing a central heating system, you will need a hot water radiator.In a hot water radiator, the heat is conveyed via a heat transfer fluid, water, which circulates in the body of your device. The radiator therefore works with a central heating system since the water is heated in a boiler (gas, wood or fuel), using a heat pump or via solar heating.Get Price

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    The system is two pipe with a 2" parallel setup in the basement. Each radiator is fed from the 2" by a pair of 1/2 to 3/4 lines. My contention is that the amount of cold water being returned to the boiler by the circulator on the return side is overwhelming the boiler. The efficiency of the boiler was written on a service tag years ago at 75%.Get Price

  • High efficiency boiler and radiators : HVAC

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  • Should I convert cast-iron radiators to Runtal wall panels

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  • Cast iron radiator? - Community Forums

    Oct 03, 2013 · Boilers - Home Heating Steam and Hot Water Systems - Cast iron radiator? - I got an awesome deal for a bunch of cast iron radiators. The price of them was simply me getting them out of the house. They were in use until a little over a year ago in a hot water system. They are all Gurney brand, all but 1 are piped onlyGet Price

  • Home Heating: Understanding Hot Water Boiler Systems | Hunker

    May 15, 2021 · Many older boiler heating systems are gravity systems and rely on the fact that steam naturally rises to the highest point in the system. Contemporary systems, on the other hand, circulate hot water through the pipes at a temperature between 180 and 190 degrees Fahrenheit, which reduces the amount of energy needed to heat the water but requires the …Get Price

  • The Ugly TRUTH About Cast Iron Boilers - Energy Kinetics

    It's simply a better material for hot water boilers and it's this design that lasts longer and runs at higher efficiency than cast iron. System 2000 by Energy Kinetics was not only the first steel boiler to successfully compete with cast iron boilers, …Get Price

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    Hey guys, I currently have cast iron radiators with a heating oil boiler (circa 1985), no natural gas lines in my area. I'm thinking of going solar and have been researching electric boilers to replace my heating oil boiler.Get Price

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    The boiler has to work it's self up to a boiling point to create steam. Even the most efficient boiler in the world has to work harder than a traditional forced hot water boiler. With forced hot water, you can also use it as a hot water heater (for tap water/showering/etc). A radiator is nice, real nice, but you're gonna end up paying for it.Get Price


    Steam pipes comes under I.B.R. inspection if­ (i) Steam pressure exceeds 5.5 kglcm. 2 . and internal diameter exceeds 250 nun. (ii) Steam pressure exceeds 3.5 kglcm. 2 . and internal diameter exceeds 254 rom. . (iii) Steam pressure exceeds . 1.5 . kglcm. 2 . and internal diameter exceeds 25 mm. (iv) Steam pressure exceeds 3.0 kglcm. 2 . and Get Price

  • What are Combi Fault Codes? | Kombisan Energy Systems

    Make sure that the gas valve next to your boiler is open. Press the OK button 2 times on the Combi Panel, the problem is solved. 151E Fault Code: Combi control card failure. Check the ignition electrode position. Fault Code 155E: Exceeding the maximum reset attempt (n°5) Press the "RESET" button on the boiler.Get Price

  • Tips For A Successful Cast Iron Water Boiler Installation

    Jul 16, 2018 · You will need a minimum of a 20°F rise. If this is a large water volume system, like cast iron radiation, increase the ΔT through the boiler to 35 – 40°F ΔT. Quick Tip: If the bypass is hotter than the return pipe, the flow is backwards and you have piped a system bypass as opposed to a boiler bypass.Get Price

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    Answer (1 of 2): "Cast iron radiators typically operate at about 130 to 140F. "So, it made sense to go to a high-efficiency condensing boiler," a person added. A low-temperature system like this takes maximum advantage of modern condensing boiler technology. The demand for domestic hot water was Get Price

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    Oct 24, 2018 · I'm looking for some guidance on where to go with our hot water, cast iron radiator heat. We love the radiant heat of the cast iron radiators, so not looking to switch to a different type of heat. We have two boilers for our 130 year old 6700 sqft house. One newer boiler (7-8 years) and one old boiler that is on it's last leg.Get Price

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    Nov 11, 2011 · Boilers - Home Heating Steam and Hot Water Systems - Proper bleeding method - hot water cast iron radiators - hi folks. I am reading conflicting information on the web about how to bleed radiators and searched these forums pretty thoroughly to no avail, so I though I would ask in this forum. I have pressurized oilGet Price

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    The boiler heats this water to about 180 degrees Fahrenheit, and a pump pushes the heated water to the radiator where the heat spreads to the air around it. Then the cooled water returns to the boiler to be heated again. Types of Radiators. Radiators can be made from several different types of metals. Older systems tend to have cast iron Get Price

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    If the system could supply adequate heat with 140SWT on a design day, and lower on milder days, the mod con may run in 90% plus efficiencies most of the year. A conventional boiler, maybe mid to high 80%. You cannot "fool" or design that efficiency number higher in a non condensing boiler. Bob "hot rod" Rohr.Get Price

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    May 17, 2010 · Is installing a condensing modulating boiler w/ indirect hot water in an old home with cast iron radiators in Minneapolis still efficient if the house has old 2"+ dia. cast iron piping and cast iron radiators? I've read that if the water returning to the boiler isn't under a certain temperature the heat exchanger won't function efficiently.Get Price

  • Connecting New Boilers to Old Pipes - Heating Help #1

    Aug 13, 2015 · To raise the incoming water temperature from the ground temperature to 140°F, the boiler water has to be higher than 140°F. It may be 20°F higher than the domestic water temperature. If that is the case, the boiler water temperature will be at 160°F and the boiler efficiency will be around 84-86% efficient.Get Price

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