Tag: #FRP MEMBRANE HOUSING
Why is FRP membrane Housing preferred more than PVC membrane housing and Stainless steel?
In this article, we will discuss why FRP membrane Housing is more preferred than PVC membrane housing and Stainless steel membrane housing.
Why is FRP membrane housing preferred more than PVC membrane housing and Stainless steel?
Membrane housing is nothing but a pressure vessel, and it is used for loading membrane elements for water purification / liquid process in the reverse osmosis process. There are three different types of membrane housings available with different materials for water treatment available in the market. They are FRP (fiberglass reinforced plastic), stainless steel, and PVC. Presently for more reverse osmosis water treatment systems, FRP membrane housing is the best preferable option. Everyone shows interest in choosing this FRP membrane housing because of the best design size, pressure bearing capacity, material properties, rust-free, and operating temperature compared to PVC membrane shells and stainless steel.
The following are some of the reasons why FRP membrane Housing is good or preferred more than PVC membrane shells and stainless steel:
Very High-Pressure Capacity:
As everyone knows, the reverse osmosis system depends on pressure to purify water or concentrate water. This membrane housing is nothing but a vessel that usually bears lots of pressure. In the process of reverse osmosis, the very high the concentration of raw water, the greater the pressure is required to apply.
The following table shows the pressure range comparisons for FRP membrane housing over stainless steel membrane housing and PVC membrane housing. The FRP membrane housing contains a very high pressure capacity than stainless steel membrane housing and PVC membrane housing. It seems to be one of the factors “why FRP membrane housing is preferred mainly or good for water treatment systems than PVC membrane housing and stainless steel membrane housing?”.
| Type of Membrane housing | FRP Membrane Housing | Stainless Steel Membrane Housing | PVC Membrane Housing |
| Pressure | 150–1500 psi | ≤ 600 psi | ≤ 200 psi |
Huge Design Size:
Large in terms of the size and quantity for membrane elements, then the huge the water yield and the very high working efficiency of the reverse osmosis system. The very common reverse osmosis membrane elements contain 2.5″, 4″,8” and 16″ diameters. The following table shows the design sizes comparisons for FRP membrane housing than stainless steel membrane housing and PVC membrane housing. Both stainless steel membrane housing and FRP membrane housing are used to load membrane elements, and the FRP membrane housing is designed for very long and loads more membrane elements. So many big-scale water purification projects mostly prefer FRP membrane housings compared to stainless steel membrane housing and PVC membrane housing.
| Diameter | Length | FRP Membrane Housing | Stainless Steel Membrane Housing | PVC Membrane Housing |
| 2.5” | 14”/21”/40” | 1/1/1 | 1/1/1 | 1/1/1 |
| 4” | 40” | 1–6 | 1–3 | 1–3 |
| 8” | 40” | 1–8 | 1–3 | 1–3 |
| 16” | 40” | 1-6 | 1-2 | 1-2 |
Robust material property:
FRP membrane housing is prepared with very strong materials for corrosion-free chemical resistance and greater mechanism strength. Substances produced by any membrane housing corrosion are important sources of RO membrane contaminants, and water purifying projects tend to be very long-term. Therefore, the corrosion-resistant performance and service life of the membrane housing are very important. FRP is very high in resistance to all chemical solvents, and it has a very long service life. It is hardly ageing. So FRP membrane housing is preferred for almost all water purifying projects. The stainless steel membrane housing and PVC membrane housing are very difficult to resist corrosion, especially the chlorine-containing medium. Also, FRP membrane housing contains greater strength and very high impact resistance, making it difficult to damage during installation and transportation.
Broad operating temperature range:
FRP membrane housing, PVC membrane housing and stainless steel membrane housing all these membranes work at room temperature. But in some cold regions, only FRP membrane housing is preferred because the material properties used in the FRP membrane shell is affectless by low temperature. The stainless steel membrane housing and PVC membrane housing become so hard and brittle because of very low temperature, leads the membrane housing susceptible to damage and badly affects the service life of the membrane housing.
| Type of membrane | FRP Membrane Housing | Stainless Steel Membrane Housing | PVC Membrane Housing |
| Operating Temperature | -10 °C–49 °C | 0 °C–100 °C | 0 °C–40 °C |
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All the above properties make FRP membrane housing more preferable than PVC membrane housing and stainless steel membrane housing.
Best manufactures of FRP membrane housing in India – The life span of FRP membrane housing
FRP membrane housing is manufactured in the brand name of ALFA ≈ AEROSOL. In this article, We will discuss the Best manufactures of FRP membrane housing in India, also about the life span of FRP membrane housing, the materials used in FRP membrane housing, and the Precautions you need to take while replacing FRP membrane housing.
Best manufactures of FRP membrane housing in India:
Alfa Aerosol is one of the best manufactures of FPR membrane housing and exporters of quality water purifying equipment in India. Alfa Aerosol has advanced technological machines like CNC Filament Winding Machine, Engineering Plastic Molding Machines, and Precision resineincertion machine and qualified team. Along with the FRP membrane housing product, there are many more technically advanced products with the best quality and service for your low maintenance of liquid processing industry like Reverse Osmosis, ETP, STPEtc
Precaution you need to take while replacing FRP membrane housing:
As FRP membranes are manufactured with robust materials, there is no need to change the FRP membrane housing because of minimum life span is 25 years. The following is the only precaution you need to take while replacing FRP membrane housing:
Before opening the endcap, you need to completely down the pressure, and all the pump needs to be off.
Materials used in the manufacture of FRP membrane housing:
The following two materials are used to manufacture FRP membrane housing:
- Epoxy resin
- Fiberglass
The life span of FRP membrane housing:
The minimum life span of FRP membrane housing is 25 years because of filament winding with robust materials called epoxy resin, fiber glasses. The epoxy resin helps for chemical resistance, and fiberglass provides strength and bears the pressures.
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Maintenance Guide for FRP Membrane Housing
FRP membrane housing performance makes as the perfect product for water purifying than PVC membrane housing and stainless steel membrane housing. Today, in this article, we will discuss maintenance guidance and uses of FRP membrane housing.
Maintenance Guide for very Long and best Performance of FRP Membrane Housing:
After successfully installing your water processing system, you need to carefully check all the equipment used in the system is installed according to technique and necessary operating requirements to avoid any improper operation. After the perfect check, the shell needs to be used based on the installation and maintenance guide.
Safety and requirements:
FRP Membrane vessels are mainly designed for the long term with chemical resistance usage as housing for only osmosis membrane elements. The allowable maintain temperature is -7°C to 49°C. The filament wound FRP shell is composed of continuous fiberglass impregnated with a heated epoxy resin system. The PH range of water allowable is 3–10 pH with very normal operating conditions, and it should be 2–12 pH if the vessel needs to be cleaned. Cleaning agents need to be wiped off and cleaned from that vessel after the cleaning process.
In the case of the water processing system, sometimes there may be potential for explosive head failure, resulting in very serious injury or loss of life. But, again, this is because so many factors need to be taken to guarantee safety.
For example:
- Abnormal backpressure always need not be above 125PSI
- Use of unallowable solutions.
- Forbid to remove shell under working conditions.
- Vibratory of environmental factors.
- Process fluid, shell, and assemblies compatibility.
- The shell need not use beyond that designed specific pressure.
- Professionals must train the users, and they need to use the shell-based to the requirements.
- The shell needs not to use as support. Do not apply excessive force to any fittings which are connected directly to a pressure vessel.
Uses of FRP Membrane housing:
The following are the use of FRP Membrane housing:
- The primary use of FRP membrane housing gives pressure to the membrane to help in treat dirt water to clean water.
- It is having chemical resistance.
- It contains excellent mechanical strength.
- FRP membrane Housing is a corrosion-free product.
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Conclusion:
Follow the above maintenance guide tips for the best performance of FRP membrane housing.
Evaluation of FRP Membrane housing – Features of FRP Membrane Pressure Vessels
During1990’s stainless steel and PVC membrane housings are used, but now FRP membrane housings are used. So in this article, we will discuss about the evaluation process, industrial places for the usage of FRP membrane housing and also the feature of FRP membrane housing.
FRP membrane Housing is introduced for chemical resistance, corrosion-free for the water purifying process. If anyone is facing issues such as corrosion, less chemical resistance power, less mechanical strength, and very high maintenance, they can now choose FRP membrane housing to resolve the problem.
Different industrial places for the usage of FRP membrane housing:
The following are the different industrial places for the usage of FRP membrane housing:
Water Treatment,
Reverse Osmosis,
Desalination plants,
Effuent Treatment Plants (ETP)
Sewage Treatment Plant (STP)
Food & Beverage Industry
Cooling Towers,
Power Plants,
Hospitals,
Railway stations,
Bus station,
Schools,
Colleges,
Houses,
Temples,
In some coaching centres and Many More
Features of FRP Membrane Pressure Vessels:
The following are the features of FRP Membrane Pressure Vessels:
- All these are approved designs by only USDA for clean filtration of water.
- The Design parameters of FRP Membrane Housings are as per ASME standards.
- Available in different sizes of diameters and lengths
- You can safely consume clean and fresh water.
- It can be available in both high and low pressures of PSI units
- Low operational cost.
Evaluation of FRP Membrane housing:
During the 1990s, in place of FRP membrane, everyone used stainless steel, mild steel. After that, they observed corrosion, rust, and less resistance power if the water contains chemicals during filtration.
Now FRP membrane Housings are used to replace stainless steel, mild steel as they are corrosion-free had the best mechanism strength and chemical resistance. It also contains operating pressure from 300to 1500 PSI.
Different types of FRP membrane housing models:
There are two types of FRP membrane housing models. They are:
- End port
- Side port
End port:
The end port FRP membrane housing model is used for a plant with less than five membranes. So if we send feed water in one direction, wastage, purified water will come from the end side.
Side port:
To make an easy pipe, you need to prefer the side port model as the end port model is complex for large membranes. The side-port membrane housing model is used for plants with more than five membranes. If we send water in one direction, wastage, purified water will come from opposite directions.
How to calculate a number of elements in FRP membrane:
Follow the below procedure to calculate a number of elements in FRP membrane housing:
One element length= 40 inches.
Suppose if we consider 8 inches with five membranes:
The formula for calculating 8 inches with five membranes = 80 after (length (total membranes)).
(40(5)) = 200,
Then we need to place this 200 after 80.
= 80200
Therefore it 80200 model.
Suppose if you observe like 40240 model, then you think like this:
40 after (length (total membranes)
40 after (240)
40 after (40 inches (6 membranes)
Therefore it is 4 inches membrane housing with 6 membranes.
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Characteristics and requirements of FRP membrane housing
Characteristics of FRP membrane housing made it special, and even small scale to large scale industries prefer FRP membrane housing for liquid treatment only because of its characteristics and performance.
In this article, We will explain about the characteristics, performance and requirements of FRP membrane housing.
Characteristics of FRP membrane housings:
The following are the characteristics of FRP membrane housings:
Excellent and reliable internal quality:
The FRP membrane housing is manufactured by a controlled CNC Filament winding unit with the best performance processing equipment. The primary materials are epoxy resin and fibreglass. This unique process is used to prepare the FRP membrane housing for temperature, pressure, and corrosion resistance. Its advantages are compared to any ordinary steel, plastic, and other materials that can’t match.
Good insulation performance:
The thermal conductivity of every FRP membrane housing is usually 0.15 – 1.36 W (m.k), only about 1/200 at room temperature, these thermal insulation properties are unmatched by all metal materials. This property greatly benefits the reverse osmosis membrane in the membrane housing and affects the membrane’s external temperature.
Best corrosion resistance:
The combination of both glass fiber and epoxy resin primarily acts as a natural anti-corrosion product. The inner surface is also very smooth, and the coating has the best stability to solvents like acid, alkali, salt, and oil with low concentrations. The seawater, microorganisms, etc. Which are entering the FRP Membrane housing are very effectively smothered so that there is no corrosion for Life term usage.
Structural design:
The design of the barrel, head, and groove of the FRP membrane housing is separated, and the calculation details are constantly optimized to make sure the structure’s safety. The concentrated water side opening is constantly optimized to meet all the necessary safety pressure for opening, especially the head’s four side ports, and improves variability during installation.
Component reliability:
The endplate is an important accessory of FRP membrane housings and has the best strength, best pressure resistance power, and high-pressure impact resistance. The seal is professionally designed as a “V+X” ring with an O-shaped endplate seal to ensure that it never leaks under any low or high-Pressure ranges. The side opening seal design combined with L-shaped drum round pads ensure the best sealing effect of the side opening mouth under that angular offset. The side opening is secured with a lifting-up affixing to make it more flexible.
Temperature maintenance:
The FRP membrane housing can mainly be used continuously for filter purposes for a long time, but to make sure long-term and best use of the FRP membrane housing strictly comply only with the temperature in between (-7c to 49c) that the product can withstand. Therefore, it is not safe to exceed this (-7c to 49c) temperature range and work under these conditions. Also, read the instructions pressure range for your FRP Membrane Housing.
Performance of premium FRP membrane housing:
The following are some of the performances of premium FRP membrane housing:
The internal structure performance is perfect, safe, trusted, and designed with good quality materials.
The matching components provide excellent sealing pressure performance.
Stoving varnish for external surface treatment always makes FRP membrane housing as best as new in hot and humid environments.
The universal property of pressure vessels is matched with multiple standard membrane elements, E.g., Filmtec, Koch, Hydranautics, Toray, Vontron, Kora, Osmonics, CSM, LG and BDX, etc.
Requirements for the usage of FRP membrane housing:
The following are the requirements for the usage of
FRP membrane housing:
- Comply with the best-rated design pressure index, ensure to use only allowable value; overpressure operations are strictly banned.
- The average working temperature of FRP membrane housing is usually between -7°C to 49°C. It is strictly banned to work beyond those temperature ranges.
- The FRP membrane pressure vessels can withstand at any pH range.
- The backpressure need not exceed up to 125PSI.
- Conventional fluid media is clear water, sewage, seawater; if used for special fluids, don’t hesitate to contact us (ALFA AEROSOL) in advance to avoid accidents.
- When the system is working, or there is pressure in the membrane pressure vessels, it is strictly banned to knock, disassemble or move that membrane shell and control the influence of surrounding vibration sources.
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All the characteristics, performance, and requirements of FRP membrane housing make it more preferable than PVC membrane housing and stainless steel membrane housing.
What is FRP membrane housing? Process to remove endcap
FRP membrane housing is one of the best-advanced technology manufactured products in this modern era. So today,
In this article, we will discuss “what is FRP membrane housing? And process to remove endcap from the housing”.
What is FRP Membrane Housing?
FRP membrane housings also called membrane pressure vessels, are used in throughout worldwide in areas like Reverse osmosis, ultrafiltration, sodium filtration, and other processes in Liquide Treatment.
The manufacturing process involves computererised programmed filament winding units and very high-performance processing equipment.
The process to remove 4 inches End Cap of FRP Membrane Housing:
The following process is required to remove 4 inche End Cap of FRP Membrane Housing:
Equipment used to remove 4″ End Cap of FRP Membrane Housing:
1. Allen spanner 6mm.
2. 1/2 BSP pipe.
• Use Allen spanner to unscrew 6mm Allen screws.
• Then slide those lockplates in an inward direction to remove them.
• Now you need to connect a 1/2 BSP thread pipe.
• Slowly pull that end cap in an outward direction.
The process to remove 8 inches End Cap of FRP Membrane Housing:
The following process is required to remove 8 inches End Cap of FRP Membrane Housing:
Equipment used to remove 8 inches End Cap of FRP Membrane Housing:
1. Allen spanner 6mm.
2. 1” BSP pipe.
• Use Allen spanner to unscrew 6mm Allen screws.
• Then slide those lockplates in an inward direction to remove them.
• Now you need to connect a 1” BSP thread pipe.
• Slowly pull that end cap in an outward direction.
The process to remove 2.5 inches End Cap of FRP Membrane Housing:
The following process is required to remove 2.5 inches End Cap of FRP Membrane Housing:
Equipment used to remove 2.5 inches End Cap of FRP Membrane Housing:
1. Allen spanner 6mm.
2. 1/4 BSP pipe.
• Use Allen spanner to unscrew 6mm Allen screws.
• Then slide those lockplates in an inward direction to remove them.
• Now you need to connect a 1/4 BSP thread pipe.
• Slowly pull that end cap in an outward direction.
The process to remove 16 inches End Cap of FRP Membrane Housing:
The following process is required to remove 16 inches End Cap of FRP Membrane Housing:
Equipment used to remove 16 inches End Cap of FRP Membrane Housing:
1. Allen spanner 20mm.
2. 3” BSP pipe.
• Use Allen spanner to unscrew 6mm Allen screws.
• Then slide those lockplates in an inward direction to remove them.
• Now you need to connect a 3” BSP thread pipe.
• Slowly pull that end cap in an outward direction.
Explore more details about here FRP Membrane Housing.
Better choose FRP membrane housing for a long-lasting time. So follow the above process carefully to remove the endcap.
