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Thread starter
guideonl
Start date
Apr 25,Tags
In summary, the conversation discusses considerations for choosing a proper hose for industrial purposes, including the maximum working pressure and type of fluid being used. It also mentions the abbreviation "inst" which likely stands for instrument air, a type of compressed air used in industrial applications. The speaker also suggests checking local laws and safety regulations for maximum pressure limits.
guideonl
Hi everyone,
What should be the considerations to choose the proper hose (max working press) installed at outlet air pressure vessels (11 bar) for industrial purposes? Please remark source\link.
Also, I've found a table which lists the max sys operating press for 4 different fluids (fuel, oil, hyd/pneu, inst air). What is the abrreviation inst mean?
Thank you
Mentor
Ask/look for standard air hose. The standard rubber air hose in a local hardware store is specified for 300 PSI (20 bar) working pressure.
Inst air is probably instrument air. Instrument air is compressed air that has been dried (moisture removed) and does not have oil added.
Science Advisor
Education Advisor
This must be some kind of generic table listing "typical" values. The plants I worked in had instrument air at around 100 psig (6.9 barg). I do not recall the system design pressure (for the piping, etc.) probably twice or three times that. Many of the air-operated instruments run at much lower pressure. Pneumatic signals are typically 3-15 psi for 4 - 20 ma signals.guideonl said:
Right, instrument air is used in industrial applications (eg, chemical plants, power plants, etc). The IA can be used to operate valves, and various control devices.This must be some kind of generic table listing "typical" values. The plants I worked in had instrument air at around 100 psig (6.9 barg). I do not recall the system design pressure (for the piping, etc.) probably twice or three times that. Many of the air-operated instruments run at much lower pressure. Pneumatic signals are typically 3-15 psi for 4 - 20 ma signals.
guideonl
Thank you jrmichlerjrmichler said:
Thank you jrmichler
Science Advisor
Gold Member
If this is for general use in areas like assembly lines for electronic equipment, pay attention to the local laws & safety regulations.
Here in California (and maybe Federal) there is a maximum pressure you must not exceed. I don't recall the exact number but believe it is around 30-50PSI (2-3bar).
We would put a pressure regulator at the head of each assembly line, but put one connector for "Supervisor Use Only" at the head end before the regulator to get the 100PSI (7bar) line pressure. That one got a lot of use!
Of course if you are powering tools or equipment you use whatever is needed.
Cheers,
Tom
When choosing a flexible hose for an outlet air pressure vessel, there are several factors to consider. These include the operating pressure and temperature, the type of fluid being transported, the size and length of the hose, and the compatibility of the hose material with the fluid.
The size and length of the flexible hose should be chosen based on the flow rate and pressure of the air being transported. It is important to ensure that the hose is not too long, as this can cause pressure drop and decrease efficiency. It is also important to consider any bends or turns in the hose, as these can also affect the flow rate and pressure.
The most commonly used materials for flexible hoses in pressure vessels are rubber, PVC, and stainless steel. Rubber hoses are suitable for most general applications, while PVC hoses are more resistant to chemicals and abrasion. Stainless steel hoses are typically used for high-pressure and high-temperature applications.
It is important to consult with the manufacturer or supplier of the hose to ensure that the material is compatible with the fluid being transported. Some fluids may be corrosive or reactive with certain materials, so it is important to choose a hose that is specifically designed for the type of fluid being used.
Regular maintenance is important for flexible hoses in pressure vessels to ensure their longevity and safe operation. This includes regular inspections for wear and tear, replacing any damaged hoses, and ensuring proper storage and handling to prevent kinks and bends that can affect the performance of the hose.
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If you&#;re in the process of selecting the right hydraulic hose for your project, it can be overwhelming with the various options and considerations. Choosing the right hose is essential for your project&#;s success, and there are several factors to consider before making your final decision. In this blog post, we will provide a guide on how to select the right hydraulic hose for your industrial hose assembly.
Industrial hoses are flexible, reinforced tubes used to transport a variety of materials such as liquids, gases, and solids in various industrial applications. They come in different sizes, shapes, and materials, and are designed to withstand different temperatures, pressures, and chemical exposures.
Industrial hoses are used in various industries such as food and beverage, chemical, petroleum, pharmaceuticals, material handling, and construction. They are also used in agriculture, mining, automotive, and marine applications. Industrial hoses are essential in transferring materials between processing equipment, storage vessels, and transport vehicles. They are used in fluid transfer, suction and discharge, and conveying dry bulk solids.
There are several types of industrial hoses, each designed to perform a specific function and to withstand different environmental conditions. These include the following:
This hose is used for a variety of applications, including air compressors, pneumatic tools, and water transfer.
This hose is designed for the transfer of corrosive and aggressive chemicals, acids, and solvents.
This hose is used in food and beverage processing and transportation, as it is made from materials that are safe for contact with food products.
This hose is used for the transfer of liquefied petroleum gas (LPG) in applications such as forklifts, heating appliances, and outdoor cooking.
This hose is designed for the transfer of abrasive materials, such as cement, sand, and gravel.
This hose is used for the transfer of petroleum-based products, such as gasoline, diesel, and jet fuel.
This hose is made from polyvinyl chloride (PVC) and is used for a variety of applications, such as water transfer, suction and discharge, and air transfer.
This hose is used in high-temperature steam applications, such as for cleaning and sterilization.
This hose is used for a variety of water transfer applications, such as irrigation, firefighting, and water suction and discharge.
This hose is used for welding and cutting applications, such as in metal fabrication and repair.
Each type of hose is designed with specific properties, materials, and construction methods to ensure optimal performance and safety in their respective applications.
When selecting a hydraulic hose, it&#;s essential to consider the built-in safety factor. The safety factor is the ratio of the burst pressure of the hose to the maximum pressure. For example, if the maximum working pressure is psi, and the safety factor is 4:1, then the burst high-pressure hose should be at least 12,000 psi.
The safety factor is crucial because it ensures that the hydraulic hose can handle the pressure spikes and surges that occur during normal use. It also helps to prevent accidents and injuries caused by hose burst failure. The safety factor is typically specified by the hose manufacturer and should be considered when selecting a hydraulic hose for your project.
The hose end assembly is an essential component of a hydraulic hose system. It includes the hose fittings and connectors that attach the hose to the rest of the system. The end assembly affects the performance of the hydraulic hose by ensuring a secure and leak-free connection between the hose and the other components.
The end assembly should be selected based on the specific requirements of the hydraulic system, including the hydraulic system pressure rating, temperature, and compatibility with the fluid being used. Improper end assembly selection can lead to leaks, hose failure, and safety hazards.
Rubber hoses are a popular choice for hydraulic systems because they offer several advantages. They are flexible, durable, and have a high resistance to abrasion and corrosion. Rubber hoses are also capable of handling high pressure and temperature fluctuations, making them suitable for a wide range of applications.
However, rubber hoses have some disadvantages to consider. They are vulnerable to ozone and UV exposure, which can cause them to crack and degrade over time. They are also susceptible to contamination from the hydraulic fluid and can deteriorate quickly if exposed to incompatible fluids.
Thermoplastic hoses are another option for hydraulic systems. They are lightweight, flexible, and have a high resistance to abrasion and chemicals. Thermoplastic hoses are also compatible with a wide range of hydraulic fluids and have a low permeation rate, which reduces the risk of fluid loss.
However, thermoplastic hoses have some disadvantages to consider. They are less durable than rubber hoses and have a lower temperature and pressure range. They are also more expensive than rubber hoses, which can be a factor in some projects.
Understanding the essentials of hydraulic hoses is critical to selecting the right hose for your project. The safety factor, the entire hose assembly, and the advantages and disadvantages of rubber and thermoplastic hoses should all be considered when making your selection. By taking the time to evaluate these factors, you can ensure the safety, performance, and long hose life of your hydraulic system.
Selecting the right industrial hose requires a comprehensive understanding of the hose specifications of your system. The process for selecting the right hydraulic hose typically involves considering the key factors outlined below.
The hose size refers to its inside diameter and affects the rate of flow of the medium being transported. It is essential to select a hose that is appropriately sized for the system to ensure optimal performance.
The hose diameter is critical in determining the volume of fluid that can flow through the hose. Selecting the correct inner diameter will ensure efficient fluid transfer.
The outer cover of the hose should be selected based on the available space in the system, ensuring that the hose does not become too bulky and restrict movement.
The length of the hose should be selected to ensure proper routing, allowing for optimal flow and minimal pressure drop.
The operating temperature of the system should be taken into account when selecting the right hose. Different materials and constructions are suitable for different temperature ranges, ensuring that the hose does not become brittle or too pliable.
The temperature of the fluid being transported through the hose must be considered when selecting the right hose.
The temperature of the surrounding environment can also affect the performance of the hose, making it essential to select a hose with the appropriate temperature range for the system.
The specific application for which the hose will be used is a crucial factor to consider when selecting the right industrial hose. Factors to consider include the medium being transported, the environment in which the hose will be used, and the required performance parameters of the system.
The medium being transported through the original hose must be compatible with the material and construction of the hose to prevent degradation or failure. Proper hose selection for the medium being transported ensures optimal performance and prolongs the life of the system.
The pressure rating of the system and the pressure of the medium being transported must be considered during hydraulic hose assembly. Selecting a hose with the correct pressure rating ensures that the hose will not rupture or fail under pressure.
Hose ends are crucial components of hydraulic hoses, and selecting the right hose end fitting is essential for ensuring proper connections and preventing leaks. The selection of hose ends should be based on the specific requirements of the system.
The delivery requirements of the system, such as flow rate and distance, must be considered when selecting the right hydraulic hose. The correct hose selection will ensure that the system can deliver the required flow rate with minimal pressure drop.
Selecting the right hydraulic hose can be a complex and challenging process. Seeking expert guidance from knowledgeable professionals can help ensure that the proper hose is selected for the specific needs of the system. All Hose & Valves is a trusted supplier that can provide technical support and guidance to help ensure optimal system performance and longevity.
Hydraulic fittings are components that connect and seal hydraulic hoses, tubes, and pipes in a hydraulic system. They are designed to withstand high pressures, vibration, and temperature variations, and provide a leak-free connection between hydraulic components. Hydraulic fittings come in different shapes, sizes, and materials to suit various applications and pressure ratings.
Hydraulic hose fittings are typically made of common materials such as stainless steel, brass, steel, aluminum, or thermoplastic. The material selection depends on the application, operating pressure, and temperature range. For example, stainless steel fittings are commonly used in corrosive environments, while brass fittings are suitable for low-pressure applications.
There are various types of hydraulic fittings, including:
These fittings have a cone-shaped flare at the end of the fitting that mates with a flared tube or hose end. They provide a strong and reliable connection but require a special tool for installation.
These fittings use a compression nut and ferrule to create a tight seal between the fitting and the tube or hose end. They are easy to install and suitable for low-pressure applications.
These fittings have barbs that grip onto the inner diameter of a hose or tube without the need for hose clamps or ferrules. They are quick and easy to install and suitable for low-pressure applications.
These fittings require a hydraulic crimping machine to attach the fitting to the hose or tube. They provide a strong and reliable connection and are suitable for high-pressure applications.
These fittings have threads on the end of the fitting that mate with a threaded port or component. They provide a secure connection but require sealants or tape to prevent leaks.
Permanent fittings are crimped onto the hose or tube and cannot be reused once installed. Field-reusable fittings, on the other hand, can be installed and removed without the need for specialised tools or equipment. They are suitable for applications where the hose or tube needs to be frequently disconnected and reconnected.
Hydraulic fitting ends come in different shapes and sizes, such as:
These fittings have a straight end that mates with a corresponding port or component.
These fittings have a 90-degree or 45-degree angle that allows for a change in direction.
These fittings have a T-shaped end that allows for the connection of three hoses or tubes.
These fittings have a + shape that allows for the connection of four hoses or tubes.
Connector types include male and female fittings, as well as different thread types and sizes.
JIC stands for Joint Industry Council and refers to a type of hydraulic fitting that uses a 37-degree flare to create a metal-to-metal seal between the fitting and the hose or tube. JIC fittings are widely used in hydraulic systems and are known for their high-pressure capacity and leak-free performance.
Hydraulic hose fittings can be identified by their shape, size, and thread type. The most common thread types are SAE (Society of Automotive Engineers) and NPT (National Pipe Thread), which have different thread pitches and taper angles. It is important to correctly identify the fitting to ensure a proper and secure connection.
Here are some tips for installing hydraulic hose fittings:
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