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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

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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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nonreturn valve for boiler feedpump - supply hot water

  • Offshore price : $20000-$100000 Get a quote on the right form
  • Minimum order quantity : 1 set :nonreturn valve for boiler feedpump - supply hot water
  • Supply Capacity : 10 units/month :nonreturn valve for boiler feedpump - supply hot water
  • Manufacturer/Brand : Fangkuai boiler
  • Port : Anyang
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θrion Gas Fired Steam Boiler

Capacity:1-20t/h

Rated thermal efficiency: 100-104%

Fixed working pressure: ≤1.6MPa

Applicable fuel:natural gas etc.

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Gas(oil) Fired Integrated Hot Water Boiler

Capacity:0.7-14MW

Rated thermal efficiency:96-98%

Fixed working pressure:≤1.25MPa

Applicable fuel:Natural gas, light oil, etc.

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H6 Gas Fired Hot Water Boiler

Capacity:0.7-2.8Mw

Rated thermal efficiency: 97.2-106%

Fixed working pressure:0.1MPa

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T7 Vacuum Hot Water Boilerr

Capacity:2.8-7.0Mw

Rated thermal efficiency:≥105.5%

Fixed working pressure:-0.02MPa

Applicable fuel:Natural gas, etc.

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V6 Gas Fired Hot Water Boiler

Capacity:99Kw

Rated thermal efficiency:97.2-104.4%

Fixed working pressure:1.0MPa

Applicable fuel:Natural gas, etc.

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Capacity:0.5-4.0 t/h

Rated thermal efficiency:98%

Fixed working pressure:≤1.25MPa

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  • Watts B911S-M3, Bronze Combo Fill Valve & Backflow Preventer

    Series 911 combination fill valve and backflow preventer con-sists of a Model 9D backflow preventer and Model 1156F feed water pressure regulator in one pre-assembled unit. Designed specifically for smaller boiler feed lines. In stock. List Price $162.99 Sale Price $140.99 (You save: $22.00) Quantity. Add to Cart. Add to WishList Add to Compare.Get Price

  • 46 CFR § 56.50-30 - Boiler feed piping. | CFR | US Law

    (2) Feed pump supply to power boilers may utilize the group feed system or the unit feed system. (3) Feed discharge piping from the pump up to, but not including the required stop and stop-check valves, shall be designed for either the feed pump relief valve setting or the shutoff head of the pump if a relief valve is not fitted.Get Price

  • What is a feed valve?

    The flow control valve on a boiler regulates the flow of hot water to the system. It is part of the hot water supply side of the boiler and one of the major components of a hot water boiler. A basic flow control valve opens and closes to adjust the rate of water in the boiler.Get Price

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    The boiler is a closed vessel, where the water is stored. Hot gases are formed by burning fuel in the furnace. These gases are made to come in contact with the water vessel, the point where the heat transfer takes place between the steam and water. Thus, the boiler's basic principle is to convert water into steam with heat energy.Get Price

  • Boiler feedwater valves: 6 reasons for leaking: oversizing

    Designing for maximum conditions can lead to some of the operating and leakage problems with feedwater valves. The feedwater valves are normally sized to accommodate an operating condition that occurs when the safety valves open during a unit trip. It is critical not to allow the HRSG to "dry out", which can cause severe thermal damage to the boiler tubes and the drums.Get Price

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    Water Feeder Valves on Hot Water and Steam Heating Systems - as check valves. On older hydronic or steam heating boilers the expansion tank and water feeder valve are separate physical units (photo at left). This automatic pressure-reducing water feeder combines a check valve and boiler water feeder.Get Price

  • Boiler Feed Pump Control Using Variable Frequency Drive

    2. BOILER FEED PUMP (BFP) A boiler feed water pump is a specific type of pump used to pump feed water into a steam boiler. Boiler feed pump is used to feed water to steam generator boiler drum at desired pressure and temperature. The water may be freshly supplied or returning condensate produced as a result of theGet Price

  • Non-Return Valves for Boilers - Nationwide Boiler Inc.

    Oct 04, 2017 · The main function of a non-return valve (NRV), otherwise known as stop or check valve, is to allow steam flow in one direction, and automatically prevent backflow. In other words, they prevent steam from flowing back to the …Get Price

  • Learn About Steam | Check Valves | Spirax Sarco

    Boiler feedlines - The check valve is used to prevent boiler water being forced back along the feedline into the storage tank when the feedpump stops running. Furthermore, a disc check valve with a heavy-duty spring and a soft seat can be fitted in the boiler feedline to prevent flow under gravity into the boiler when the feedpump is shut off.Get Price

  • pump - Why does my boiler inlet pull hot water from the

    Feb 08, 2022 · However, the typical means for that is a thermostatic mixing valve (so if 140F water leaves the boiler, and 120F return is minimum, and the return loop water is 100F, a part of the 140F water is mixed with the 100F return water to raise the return temperature. You still have a 20F delta in your floor loop.Get Price

  • Steam Boiler & Hot Water Supplies & Replacement Parts

    Advice where a combi-boiler/water heater is to be fitted and a non-return valve/check valves is already installed: If the householder is aware of the presence of a non-return valve or check valve on the water supply pipe, they should inform the gas …Get Price

  • Boiler Fixtures and Fittings - Bright Hub Engineering

    Dec 27, 2009 · 6. Boiler Feed Check Valve. The last valve before the drum, this is a non return valve used to isolate the feed water supply to the boiler. Fuel Oil System. 7. Fuel Oil Pump. The fuel oil is drawn from the storage by the pump and tank through a couple of screens and pumped into the fuel oil heater. 8. Fuel Oil HeaterGet Price

  • How does a non return isolating valve work?

    How to Remove a Non-Return Valve on a Boiler The non-return valve, also called a stop check valve, is usually positioned on a pipe between the boiler and the feed pump. Through this valve, hot water vapor from the boiler can be stopped or started. Step 1 – Turn the power off. Step 2 – Let the boiler cool down. Step 3 - Drain the boiler.Get Price

  • Boiler feed pump - KSB

    Boiler feed pumps operate at fluid temperatures of 160 to 210 ºC. In exceptional cases the temperature of the fluid handled may be higher still. Feed pumps for 1600 MW nuclear power stations are constructed for mass flow rates of up to 4000 tonnes/h and feed pump discharge pressures of 70 to 100 bar.Get Price

  • Boiler Feed, Backflow Preventer & Combination Valves

    Taco Boiler Feed Valves have set the standard for dependable service. The Backflow Preventer offers added protection, preventing the system from emptying if supply pressure should fail. Coupling dependable service with added …Get Price

  • Boiler Feed Water Pressure Regulators

    Boiler feedlines - The check valve is used to prevent boiler water being forced back along the feedline into the storage tank when the feedpump stops running. Furthermore, a disc check valve with a heavy-duty spring and a soft seat can be fitted in the boiler feedline to prevent flow under gravity into the boiler when the feedpump is shut off.Get Price

  • Boiler Stop-Check & Non-Return Valves - Boilersupplies.com

    Learn About Steam | Check Valves | Spirax SarcoGet Price

  • What is theFunction of arc valve in boiler feed - Answers

    Sep 01, 2009 · The feed check valve of a boiler is on the line coming out of the boiler it is usually to prevent the water from going back in to the boiler its coming out of …Get Price

  • Boiler Feed, Backflow Preventer & Combination Valves

    Taco Boiler Feed Valves have set the standard for dependable service. The Backflow Preventer offers added protection, preventing the system from emptying if supply pressure should fail. Coupling dependable service with added protection into one quality product is Taco's Combination Boiler Feed & Backflow Preventer Valve.Get Price

  • Normal hot water heating boiler operation - FMLink

    To fill a hot water heating system, use the following procedure: Review the manufacturer's recommendations. Make sure that the air vents on all radiators and/or convectors are closed. Open all valves in the circulating lines. This includes the valves on the supply and return lines at the boiler, the suction and the discharge valve on the Get Price

  • What is a boiler? What are parts of a boiler - mech4study

    Jun 10, 2018 · It is used to blow off mud and water whenever required. It is situated at the bottom of the drum. It is use to empty the boiler, when required. 6. Feed check valve: It is a NRV (Non Return Valve). It regulates supply of water in drum, by the feed pump. It is fitted to the drum slightly below the normal water level. 7. GrateGet Price

  • What is the function of a feed check valve in a boiler

    Answer (1 of 4): Feed check is a combination of 2 valves in one; one is feed valve and the other one is check valve. The function of feed valve is to allow or stop the supply of water to the boiler. The check valve is automatic in operation and its function is stop the back flow of water i.e. tGet Price

  • Main Types of Steam Boiler Valves or - Thermodyne Boilers

    Gate valve. Gate valve is a sliding type of Boiler valve. In the gate valve the closure membrane is a metal gate. These gates slide down to close the valve. The flow area is equal to the area of the pipe in fully open condition which results in negligible pressure drop across the valve. These valves are usually used in on/off condition.Get Price

  • Non return valves necessary? - Screwfix Community Forum

    Nov 27, 2019 · Heat Screwfix Select. Your water is equal pressure on hot and cold being a Combi boiler system both pipes coming from mains. On gravity hot/mains cold systems or any system where the pressure is not balanced you need non return valves on pipes to mixer taps etc. Heat, Nov 27, 2019. #4.Get Price

  • Boiler Circulating Pump Hot To Touch? (Possible Causes

    If your boiler's circulating pump is hot to the touch, this could be due to a blocked rotor from worn-out bearings, or possibly a buildup of dirt. However, it's important to note that while it's common for the pump to get warm, or even hot, it should never become dangerously hot. Below we'll discuss circulator pumps, switches, controls Get Price

  • CN202118887U - Energy-saving water feeding system for

    The utility model discloses an energy-saving water feeding system for a boiler, which comprises a soft water tank, a deoxidizing pump, a deoxidized water tank, a boiler water feeding pump, a coal economizer, a coal economizer blow-off cooling pond and a boiler water feeding control system. A water outlet pipe of the coal economizer is connected to an outlet on the lateral wall …Get Price

  • Your guide to safer boiler operation

    Oct 12, 2013 · This feed water pump works by two check valves positioned one behind the other. By pulling back the plunger is formed in the pump housing, a negative pressure so that the upper non-return valve closes and the fresh water is drawn into the pump at the bottom inside. When the plunger is moved forward again due to excessive pressure in the interior.Get Price

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  • BOILER FEEDPUMP RECIRCULATION

    Therefore, the boiler feedpump recirculation valve will be in the closed position for 90% to 95% of the time in most power plants. This valve will also have the highest differential pressure across the seat of any other valve in the plant. This makes the recirculation valve one of the most severe duty valves in a generating plant.Get Price

  • Boiler Basics Part 4 - Piping - HVAC School

    Jan 28, 2017 · The loop is used to prevent water from leaving the boiler through the return if the pressure is lower than the supply or if there were to be a leak on the return. This piping configuration was mandated by code for a long time to prevent low water conditions causing the boiler to dry fire.Get Price

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