Mine Hair Dryers

Why Choose Us?

Complete Qualifications
The company has now developed into a high-tech enterprise with complete products, excellent quality, large scale and strong production capacity in the same industry. The company has made more than 100 scientific and technological innovation achievements and obtained 28 national patents.

Grouped Equipment
The supporting equipment includes automatic production line of anchor rod, automatic shearing production line of anchor rod, pallet production line, anchor cable production line, W guard plate production line and other production and processing equipment.

Wide Range of Applications
The company's products cover dozens of kinds of mining lamps, concrete-filled steel tubular supports, production and processing equipment for support products, anchor rods, anchor cables, anchoring agents, various metal meshes, hose assemblies, steel ladders, steel belts, etc.

Professional Service
The company pays attention to after-sales service, has a perfect after-sales service system and a strong technical support team, to provide customers with all-round, efficient and timely after-sales service. The company's after-sales service scope includes product installation, commissioning, training, repair, maintenance and other links to ensure that customers can get high-quality after-sales service and support.

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Negative Pressure Ram
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Positive Pressure Ram
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Definition of PVC Flexible Air Duct

PVC flexible air duct, sometimes known as vinyl hose, is a very flexible and affordable hose used in the movement of material, air and dust. PVC flexible air duct are used for many commercial applications because they are affordable, durable, offer good chemical resistance, and are available in a variety of grades.

Benefits of PVC Flexible Air Duct

PVC flexible air duct is a specific type of air duct that is made from flexible materials. These flexible materials include PVC, polyurethane, and metal-reinforced plastic. PVC flexible air duct is often used in HVAC (heating, ventilation, and air conditioning) systems to create a connection between different machinery parts. The flexibility of flex ducting is what attributes so many of the well-loved benefits across engineering, construction, and commercial production.

01/

Easy Installation
PVC flexible air duct offers numerous advantages that come down to its flexibility; first and foremost, flex ducting is very easy to install, and can be used in narrow and hard-to-reach spaces. Unlike rigid ducting, flexible ducting can be routed around obstacles, and is lightweight, which means it is much easier to attach overhead.

02/

Easier To Hide
The flexibility of flex ducting also adds to the general aesthetic of a traditional HVAC system which is so often an eyesore. Flexible ducting is easier to hide behind walls, underground, behind columns, and above or within the ceiling.

03/

Simple To Maintain & Replace
As flexible ducting is easier to work with during installation, it's also easy to handle it during maintenance. PVC flexible air duct can often be patched or quickly replaced.

04/

Thermal Insulation
Not only is flexible ducting often more cost effective to purchase, but flexible ducting can also offer savings in the form of thermal insulation. You can reduce energy costs with flexible ducting, as it prevents warm or cold air from escaping, ensuring your HVAC is operating at its most efficient and effective.

05/

Noise Absorption
Another benefit of flexible ducting is that the materials will absorb noise, vibration, and movement.

06/

Environmentally Friendly
PVC flexible air ductg offers an environmentally friendly construction material. PVC, polyurethane, and metal-reinforced plastic are recyclable and resistant to rust, where other ducting materials aren't.

Are PVC Flexible Air Ducts Chemical Resistant?

PVC flexible air duct s are resistant to corrosive materials that can be extremely destructive to most metal hoses. Chemical stability is a common feature among substances containing halogens such as chlorine and fluorine. This applies to PVC resins, which possess oil/chemical resistance. Because of this excellent chemical resistance, PVC ducting is often used in applications that involve the use of hazardous chemicals and fuels.

Due to this innate resistance to damaging chemicals and fumes, PVC flexible air duct s are capable of functioning in a wide variety of situations. Whether it is as a floor duct in a laboratory, or a lightweight hose providing ventilation in an attic, PVC flexible air duct s are a superior product for virtually all situations.

What Happens if PVC Flexible Air Duct Isn't Used?

PVC flexible air duct is used to transport air or contaminants from one destination to another. PVC flexible air duct gives the air a clear path to travel through, without interruption. Naturally air, like most gases, is free-flowing by nature, so it must be directed, this is what PVC flexible air duct helps to do.

So with that understanding, if PVC flexible air duct isn't used, any contaminants such as smoke, any humidity, bad smells, or dusty air roams freely in a home, settling on surfaces. Of course, PVC flexible air duct is irrelevant without hvac machinery to facilitate the movement of the air.

Some mechanisms, like extractors, only extract the indoor air and direct it to outside. Whereas mvhr systems will extract indoor air, but also replace it with fresh air that it obtains from outside at the same time.

What Is PVC Flexible Air Duct Used For?

PVC flexible air duct is the top choice for many industries when it comes to a versatile piping system. You probably use some form of flexible ducting in your industry, but have you ever wondered what else it can be used for? Here are 4 highly common uses for flexible ducting that show how versatile and ubiquitous this product truly is.

Ventilation

Fresh, breathable air is an abundant resource at ground level. But once you head deep below or above ground, it becomes scarce. A consistent airflow is an essential element for the health and safety of your employees, passengers, and yourself. PVC flexible air duct is frequently used for ventilation whether it be an underground mine or 10,000 feet high aircraft. Its flexibility is an asset as it means you can squeeze piping systems into odd shapes or small spaces and still receive exceptional air quality.

Dust collection & air purification

Sometimes on ground level our work results in contaminated air. Industries that involve woodworking – such as carpenters and sawmills – require dust removal and air purification systems to ensure their working conditions are safe. Oil refineries similarly require the removal of contaminated air from their workspace.

Heating & cooling

From commercial offices to residential building projects and even event hire; a temperature-controlled environment is ideal. Many heating and cooling systems these days use flexible ducting instead of rigid metal. It's an affordable choice, it allows for sharp turns in your system, and is easy to setup and dismantle for temporary fixtures.

Food transport

There are many flexible ducting products which qualify as food grade and are used in the transport of dry foods such as grain. They are commonly employed in the suction and discharge of materials. They are considered food safe and reinforced to prevent abrasive materials from chipping the piping and allowing contaminants to get into the ducting system.

How to Size a PVC Flexible Air Duct?

PVC flexible air duct allows easy connection from the main duct trunk to the PVC grille. Without it, there would be tons more labor and material to make that final connection. Like regular PVC duct, flex duct work needs to be sized appropriately in order to flow the air volume, which is measured in cubic feet per minute (CFM), correctly. To size a flex duct you utilize the same methods as if you were sizing regular PVC rigid duct.

Step 1

Measure the length and width of the room where the PVC flexible air duct will be supplying the air. Multiply the length and width together to get the square footage of the room. For example, a 10-by-10 room will be 100 square feet.

Step 2

Figure out the amount of CFM that is required for the room. Properly ventilated homes use 1 CFM per square foot of space. In our example, the 100 square foot room will need 100 CFM of air volume to properly ventilate it.

Step 3

Use the online duct calculator and calculate the needed flex duct size. Select the duct type on the pull down menu. Input the required CFM in the box below that. Click "calculate" and you will see the size of PVC flexible air duct you need for that room. The flex duct size may be different than the hard duct that runs to that room.

PVC Flexible Air Duct: When Is Duct Insulation Required?

Duct insulation isn't required by national law. It's governed by codes in individual states. In California, air ducts enclosed in conditioned spaces aren't required to be insulated. The ductwork in unconditioned spaces must have insulating materials rated at either R-6 or R-8 (in the typical climate zones of the Central Valley), according to Title 24 requirements. Some insulation requirements vary from one jurisdiction to another.

The R-value of insulation indicates its ability to resist the flow of heat from warm to cool areas. Therefore, it compares how well insulation keeps heat out of your home in summer and indoors during winter.

The higher the R-value, the more efficient the insulating material.

Here are some reasons why PVC flexible air duct insulation may be required:

Air Ducts Are Prone to Leakage: Joints connecting sections of sheet metal or fiberglass ducts are prone to air leakage, which reduces HVAC efficiency. Insulating the joints can provide a seal that prevents leakage.

The Duct Material Has Poor Efficiency: Sheet metal ducts are among the most energy-efficient. However, flexible air ducts tend to lose energy due to tears and other types of damage. Insulation can compensate for the lower efficiency rating of thin, flexible ducts.

In Unconditioned Areas: Ducts in unconditioned areas like basements, ceiling spaces, and other locations should be insulated to avoid condensation that can increase humidity and allow mold growth. Insulation can also block noise from ducts and other parts of your home.

To Help Keep Ductwork Sanitary: Dust particles and bacteria don't settle on insulated ductwork as easily as uninsulated ducts. Therefore, insulation can help improve indoor air quality and avoid airborne illnesses associated with poorly insulated and maintained ducts.

Old Ducts: If your older ductwork is in relatively good condition but not highly efficient, you can choose to insulate it. This can avoid having to replace ducts immediately and improve your HVAC system's performance.

Our Factory

Founded in 1997, Jining Luoling New Mining Products Co., Ltd. is a wholly-owned state-owned mining new product enterprise, located in Zoucheng, which is known as the hometown of Confucius and Mencius and the state of etiquette. As a subsidiary of Jining Energy Development Group Co., Ltd., we have strong financial and technical strength, and are high-tech enterprises with complete products, excellent quality, large scale and strong production capacity in the same industry in China.
The company's products cover dozens of kinds of mining lamps, concrete-filled steel tubular supports, production and processing equipment for support products, anchor rods, anchor cables, anchoring agents, various metal meshes, hose assemblies, steel ladders, steel belts, etc. Our support product production and processing equipment mainly includes bolt production line, anchor cable production line, pallet production line, W guard plate production line, bolt automatic cutting production line, bolt bevel automatic shearing production line, etc., all using exquisite production technology and technical equipment, to provide customers with high-quality, reliable products and services.

Our Certificate

Production Equipment

The supporting equipment includes automatic production line of anchor rod, automatic shearing production line of anchor rod, pallet production line, anchor cable production line, W guard plate production line and other production and processing equipment.

Ultimate FAQ Guide to Mine Hair Dryers

Q: How to select a PVC flexible air duct?

A: Measure the length and width of the room where the flex duct will be supplying the air.
Figure out the amount of CFM that is required for the room.
Use the online duct calculator (see References) and calculate the needed flex duct size.

Q: What are the rules for PVC flexible air ducts?

A: Designated chases that maximize the efficiency of the airflow.
Seal the Ducts With Mastic All ducts should be sealed using UL-181–rated duct mastic, and PVC flexible air ducts should be held in place with tie wraps at all connectors.
Use Only What You Need Friction is the enemy of airflow.

Q: How do I know what size PVC flexible air duct I need?

A: You generally need at least 1 CFM per square foot, meaning that room's duct should have a 144 CFM capacity. Although a 4" x 8" duct is ideal for a 12' x 12' room, the actual duct size you need varies based on different aspects of your home (size/number of windows, insulation type, etc.).

Q: Does PVC flexible air duct reduce airflow?

A: We like PVC flexible air duct. However, in many homes, flex duct is overused because it's relatively easy to install compared to hard pipe duct. In addition to being overused, it's frequently installed sloppily. Over time, it sags or gets bent and inhibits precious airflow through your system.

Q: How long do PVC flexible air ducts last?

A: The longevity of PVC flex ductwork hinges on several key factors, including material quality, installation, and maintenance. Typically, well-installed and properly maintained flex ductwork can endure for 15 to 25 years.

Q: What is the rule for PVC flexible air duct size?

A: The formula for calculating duct size often involves the airflow rate and the air velocity. The cross-sectional area of the duct (A) can be found using the equation A = Q / V, where Q is the airflow rate and V is the air velocity.

Q: Should PVC flexible air duct be hung?

A: If ducts are to be installed in a vented, uninsulated attic or crawl space, hang the ducts with supporting straps or saddles of sufficient width and frequency to adequately support the ducts so that the ducts do not sag and are not pinched or compressed in a manner that would cause damage to the ducts, the duct insulation, or the duct air barrier covering.

Q: How do I choose a PVC flexible air duct size?

A: One simply needs a ruler or measuring tape along with the end of the hose or outlet. Keep in mind that you have to begin the measurements from the interior wall of the circle. The distance to the opposing point of the circle is the measure of the flex duct sizing for the inner diameter.

Q: How do you secure a PVC flexible air duct?

A: Secure PVC flexible air duct liner to hard connections with zip tie and tensioner tool. If using duct wrap, follow the same procedure after adding insulation where missing, being careful not to compress the insulation. Verify ducts are connected and air sealed at metal connections and any other holes within the liner.

Q: What is the rule thumb for PVC flexible air duct sizing?

A: One of the most used methods is the PVC duct sizing rule of thumb. In fact, even professional AC contractors might use this method to size the AC ducts in your home. According to this rule, you need to install an air conditioner of one-tonne capacity for every 500 square feet of the floor area of your residence.

Q: How do you connect flexible duct to PVC pipe?

A: Start by aligning one end of the flexible pipe with the PVC fitting. Be sure to leave enough space between them to make a secure connection. Once everything is in place, use a hose clamp or adhesive tape to secure the connection. Hose clamps are ideal for securing flexible pipes to PVC fittings.

Q: Should PVC flexible air duct be pulled tight?

A: One interesting bit of info that many installers need to understand is that PVC flexible air ducts need to have the inner liner pulled tight. If it's not tight, the friction rate jumps significantly, and that means the air flow takes a hit.

Q: Is PVC flexible air duct OK to use?

A: In general, PVC flexible air ducts are fine by themselves. They can be just as effective as sheet metal ducts and work exceptionally well in hot climates. The main problem comes from contractors cutting corners during installation.

Q: What is the main problem with PVC flexible air ducts?

A: The most common problems we see with flex ducts are: Kinks. Sharp turns. Long duct runs without proper support.

Q: Does PVC flexible air duct reduce airflow?

A: Sometimes the best route for a flexible duct run is up and over an obstruction. But without proper support, ducts can develops sags or kinks that reduce airflow. To prevent problems, use saddles or straps to support at regular intervals.

Q: What is the function of PVC flexible air duct?

A: PVC flexible air ducts are regularly used to transfer light dust particulate away from a specific area. This is often done for safety reasons in many occupational fields because dust can be harmful to health. The type of dust involved in these applications can vary from very fine wood dust to fertilizer particulate.

Q: What is the use of PVC flexible air duct?

A: The most common applications for PVC duct involve venting gas and exhaust. PVC and CPVC ducting have the same properties as PVC and CPVC, respectively, when it comes to chemical and temperature resistance. PVC and CPVC duct resist many chemicals that would make iron alloys rust.

Q: How do you stop condensation in PVC flexible air duct?

A: Systems using Roof Vents or Ducting rising vertically carrying extract air to outside benefit with the use of a condensate trap, this is to prevent any moisture forming inside the ductwork, dropping back down and into the fan unit. This should then be connected to a suitable soil vent pipe using a 21.5mm overflow pipe.

Q: Does a PVC flexible air duct need to be insulated?

A: The Duct Material Has Poor Efficiency: Sheet metal ducts are among the most energy-efficient. However, flexible air ducts tend to lose energy due to tears and other types of damage. Insulation can compensate for the lower efficiency rating of thin, flexible ducts.

Q: Is PVC flexible air duct work good?

A: The material's flexibility allows it to adapt to temperature fluctuations. With PVC flexible air duct work, you're less likely to deal with mold issues caused by condensation forming inside your air conditioning unit or heater. This type of ducting also allows you to run your heater uninterrupted.

We're professional mine hair dryers manufacturers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale bulk mine hair dryers in stock here from our factory. For price consultation, contact us.

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