1. Can V-type high-efficiency filters reach H13 and H14 levels?
Can. The V-type high-efficiency filter (V-Bank) uses multiple filter elements without partitions to form a V-shaped structure. The filter material usually uses ultra-fine glass fiber filter paper, and is separated by hot melt glue to keep the pleats evenly spaced. This structural design enables the V-shaped filter to achieve the H13 and H14 efficiency levels specified in the EN 1822:2009 standard while achieving large air volume carrying capacity.
H13 and H14 belong to the HEPA (High Efficiency Air Filter) level, which is a widely used filter efficiency level in the clean industry. With its large filter area and optimized air flow channel design, the V-type filter can operate stably at both H13 and H14 levels.
2. Comparison of efficiency standards between H13 and H14
According to the EN 1822:2009 standard, HEPA filters are classified according to their MPPS (most penetrating particle size) efficiency. The specific efficiency requirements for H13 and H14 are as follows:
grade
MPPS overall efficiency
local penetration
0.3μm particle filtration efficiency
H13
≥99.95%
≤0.25%
≥99.97%
H14
≥99.995%
≤0.025%
≥99.995%
The total efficiency of H13 grade MPPS is not less than 99.95%, and the local penetration rate is not more than 0.25%. The total efficiency of H14 grade MPPS is not less than 99.995%, and the local penetration rate is not more than 0.025%. From H13 to H14, the local penetration rate is reduced by ten times, and H14 requires higher filtering accuracy.
In practical applications, the filtration efficiency of H13 for 0.3μm particles can reach more than 99.97%, and H14 can reach more than 99.995%. H14 usually needs to be scanned and tested for leaks one by one, while some H13 products can be scanned and tested according to customer requirements.
3. Applicable scenarios of H13 and H14
Applicable scenarios for H13 level:
ISO class 7-8 (class 10,000-class 100,000) clean room
Electronic assembly workshop, general industrial clean room
Food processing workshop
Commercial building ventilation systems
Places that require cleanliness but are not critical control points
Applicable scenarios for H14 level:
ISO Class 5-6 (Class 100-Class 1,000) clean room
Pharmaceutical GMP workshop (Class A and Class B clean areas)
Hospital operating room, ICU
biosafety laboratory
Key processes in semiconductor manufacturing
The choice of H13 and H14 mainly depends on the cleanliness level requirements. H13 is sufficient for ISO 7-8 levels, and H14 is required for ISO 5-6 and critical places such as pharmaceuticals and medical care.
4. Technical characteristics of V-type filter H13/H14
V-type filters have the following technical characteristics when achieving H13 and H14 levels:
Large filter area
The V-shaped structure allows multiple filter elements to be arranged three-dimensionally, increasing the filtration area under the same external dimensions. Under rated air volume, the speed of air flowing through the filter material is low, which is conducive to maintaining the stability of filtration efficiency.
Controllable resistance
Under the H13 and H14 grades, the initial resistance of the V-type filter can be controlled within a reasonable range. Taking common specifications as an example, the initial resistance of H13 grade is about ≤200Pa, and the initial resistance of H14 grade is about ≤250Pa. Lower initial resistance helps reduce fan energy consumption.
Stable structure
The V-shaped filter adopts a metal frame (galvanized steel plate or aluminum alloy) with a hot-melt adhesive separation process to ensure a stable structure. Under variable air volume systems and turbulent flow conditions, the shape of the filter material can be kept stable to ensure that the filtration efficiency is not reduced due to air flow fluctuations.
Test one by one
H14 grade V-type filters must undergo a leak detection test one by one before leaving the factory to ensure no leakage. Some H13 products can also provide unit-by-unit testing services according to customer requirements.
5. Suggestions for selection
When selecting the efficiency grade of a V-type filter, it is recommended to refer to the following points:
1. Determine according to the cleanliness level
Refer to the ISO 14644-1 clean room grade standard to clarify the cleanliness level required for the production environment. H13 is used for ISO levels 7-8, and H14 is used for ISO levels 5-6 and above.
2. Refer to industry standards
GMP specifications in the pharmaceutical industry usually require H14 level; H14 is recommended for key areas of advanced semiconductor processes; H13 is sufficient for food and general industrial clean rooms.
3. Consider system air volume and resistance
H14 grade filter material is denser and the initial resistance is higher than H13 under the same conditions. When selecting, you need to confirm whether the system fan pressure head meets the resistance requirements of the H14 filter.
4. Request a test report
H14 grade filters should come with a unit-by-unit scanning leak detection test report. When purchasing, you can ask the supplier for a test report to confirm that the efficiency is up to standard.
6. Why is the H13/H14 grade of V-type filter trustworthy?
When choosing a V-type high-efficiency filter, users are not only concerned about 'whether it can achieve H13/H14', but also 'whether the H13/H14 produced can be stable and reliable.'
Whether the efficiency level of the V-type filter can reach the standard depends on three links: filter material quality, manufacturing process, and factory inspection. If there is a problem in any link, the nominal H13/H14 grade will be discounted.
Filter material is the basis
The fiber diameter, weight and density of the ultra-fine glass fiber filter paper used in V-type filters need to match the target efficiency level. H14 grade filter media requires a finer fiber diameter and more uniform fiber distribution than H13 grade, which places requirements on the technological level of filter material suppliers.
Craftsmanship is the guarantee
The manufacturing process of V-shaped filters involves origami, hot-melt glue separation, V-shaped assembly, and frame sealing. If the filter material is slightly damaged during the origami process, the efficiency will be affected; uneven separation of hot melt glue will lead to excessive local air flow speeds, increasing the risk of penetration; if the frame is not tightly sealed, bypass leakage will occur. The process accuracy of each link will affect the final efficiency level.
Testing is verification
The EN 1822 standard requires filter-by-scan leak testing for H14 grade filters. This means that every H14 grade V-type filter must be tested and verified, rather than just relying on random inspections or theoretical calculations. The scanning leak detection test can detect tiny damage points on the filter material and leakage points at the frame seal, ensuring that every filter shipped from the factory meets the efficiency grade requirements.
7. Quality control of Aili Industrial V-type high-efficiency filter
In the production process of V-type high-efficiency filters, Aili Industry controls the three links of filter material selection, manufacturing process and factory inspection:
Filter material selection
Aili Industrial V-type high-efficiency filter uses ultra-fine glass fiber filter paper as the core filter material. Filter materials of different specifications are matched for H13 and H14 grades to ensure that the filter material itself has the ability to achieve the target efficiency level.
Manufacturing process
Aili industrial V-type high-efficiency filter uses automated origami equipment to fold the filter material to ensure consistent pleat height and even pleat spacing. The hot melt adhesive separation process accurately controls the position and spacing of the glue lines to maintain uniform air flow channels. The V-shaped assembly link ensures that the installation angle of each filter element is consistent, and the frame seal is filled with polyurethane (PU) sealant to reduce the risk of bypass leakage.
Factory inspection
Aili Industrial conducts scanning and leak detection tests on each H14 grade V-type high-efficiency filter one by one. The test method complies with the requirements of the EN 1822 standard. H13 grade products can provide scanning and testing services one by one according to customer requirements. Each filter comes with a test report when it leaves the factory, which contains measured data on key indicators such as efficiency, resistance and leakage rate.
Whole industry chain closed loop
Aili Industry has been deeply involved in the field of purification equipment for more than 20 years, and has built a closed loop of the entire industrial chain from fan research and development, control system development to high-efficiency filter production. The key components required for the V-type high-efficiency filter are all independently developed, produced and tested by the company, and the matching between each link is controlled by the same quality system.
If you want to know more about the selection details of V-type high-efficiency filters H13 and H14 grades, you can contact the Aili industrial engineering technical team to obtain selection suggestions for specific application scenarios.
HEPA installation should be carried out according to the airflow direction and installation drawing confirmed on site: first check the filter and frame, then clean the installation surface, press the seal evenly, and finally verify the air volume and seal under specified operating conditions.
When it is found that the HEPA installation direction is inconsistent with the product or box identification, the acceptance of this position should be suspended, the supplier's drawings and airflow arrows should be checked, and then adjusted according to the allowed installation method. Just because the filter fits into the frame doesn't mean the orientation is correct.
When purchasing HEPA, you should at least clarify the outer frame size, efficiency level and applicable standards, rated air volume, resistance, structure, sealing method, use environment and testing data requirements. The old filter element replacement project also requires installation frame and disassembly and assembly path information.
Differences in high-efficiency filter quotations may come from efficiency levels, filter materials, structural dimensions, resistance requirements, sealing methods, detection range and order quantity. When comparing prices, you should first confirm whether each quotation corresponds to the same technical conditions.
The installation quality of the liquid tank high-efficiency filter directly affects the sealing effect and cleanliness. Before installation, it is necessary to check that the appearance of the filter is not deformed or damaged, that the liquid tank is intact, and that the box knife edge is flat and free of burrs. During installation, pay attention to controlling the injection amount of sealant to 70%-80% of the depth of the liquid tank, and inject glue evenly and continuously along the periphery of the liquid tank. The filter must be vertically embedded in the knife edge and pushed into place; after installation, it is recommended to conduct a visual inspection, a PAO leak test and an initial resistance record. Common problems include sealant overflow (too much glue), insufficient sealant (too little glue), difficulty in pushing the filter (skew or size mismatch), and PAO leak detection frame leakage (insufficient insertion depth or missing glue). Aili industrial liquid tank high-efficiency filter is provided with polyurethane sealant and installation guidance materials, and the engineering technical team can provide installation technical guidance support.
The liquid tank high-efficiency filter and the ordinary non-partition high-efficiency filter belong to the non-partition filter category. The core difference lies in the frame structure and sealing method. The liquid tank filter frame has a liquid tank groove, and liquid sealant is injected to achieve sealing. The sealant flows and fills all irregular gaps. It has high long-term reliability and is suitable for ISO class 5 and above clean rooms. Ordinary filters without partitions are sealed by sealing tape extrusion, with a simple structure and low cost, and are suitable for ISO class 5 and below scenarios. The filtration area of the tank filter of the same size is slightly smaller (about 5%-10% less), the price is higher, and the replacement operation is cleaner. When selecting, a comprehensive judgment must be made based on the cleanliness level, leak detection requirements, replacement frequency and budget. Aili Industrial produces two types of filters at the same time, with efficiency levels covering H13, H14 and U15-U17. Each unit has been tested and a test report has been issued.
The liquid tank high-efficiency filter and the ordinary non-partition high-efficiency filter belong to the non-partition filter category. The core difference lies in the frame structure and sealing method. The liquid tank filter frame has a liquid tank groove, and liquid sealant is injected to achieve sealing. The sealant flows and fills all irregular gaps. It has high long-term reliability and is suitable for ISO class 5 and above clean rooms. Ordinary filters without partitions are sealed by sealing tape extrusion, with a simple structure and low cost, and are suitable for ISO class 5 and below scenarios. The filtration area of the tank filter of the same size is slightly smaller (about 5%-10% less), the price is higher, and the replacement operation is cleaner. When selecting, a comprehensive judgment must be made based on the cleanliness level, leak detection requirements, replacement frequency and budget. Aili Industrial produces two types of filters at the same time, with efficiency levels covering H13, H14 and U15-U17. Each unit has been tested and a test report has been issued.
V-type high-efficiency filter can reach H13 and H14 levels of EN1822:2009 standard. The total MPPS efficiency of H13 is ≥99.95%, and the local penetration rate is ≤0.25%; the total MPPS efficiency of H14 is ≥99.995%, and the local penetration rate is ≤0.025%. H13 is suitable for ISO7-8 clean rooms, electronic assembly, food processing and other scenarios; H14 is suitable for ISO5-6 clean rooms, pharmaceutical GMP, hospital operating rooms, semiconductor manufacturing and other key places. The V-shaped filter is designed with a V-shaped structure and can achieve large air volume carrying and controllable resistance in both H13 and H14 grades. When selecting, a comprehensive judgment must be made based on cleanliness level requirements, industry specifications and system air volume. Aili industrial V-type high-efficiency filters strictly comply with the EN1822 standard, and the efficiency levels cover H13 and H14. H14-level products are scanned and tested for leaks one by one, and test reports are provided.
The initial resistance is the pressure difference value of the new V-type high-efficiency filter under the rated air volume, in Pa, which is the basic parameter for selection, operation and maintenance. The initial resistance of V-type filter H13 grade is usually ≤200Pa, and the initial resistance of H14 grade is usually ≤250Pa. Under the same conditions, the resistance of H14 is slightly higher than H13. The initial resistance is used for fan head calculation and energy consumption assessment during selection, and is used as a basis for replacement judgment during operation - the final resistance is usually set to twice the initial resistance. When the actual measured initial resistance is too high, you need to check whether the actual air volume matches the rated air volume, and check whether the installation is standardized. Initial resistance is an important parameter affecting operating costs. Aili industrial V-type high-efficiency filter is designed with low resistance. The initial resistance of H13 is ≤200Pa, and the initial resistance of H14 is ≤250Pa. Each unit has been tested for resistance and a test report has been issued.
V-type high-efficiency filters are suitable for both constant air volume (CAV) and variable air volume (VAV) HVAC systems. The air volume of the CAV system is constant and the working conditions are stable. The V-shaped filter can take advantage of low resistance and high efficiency when selected according to the designed air volume. The air volume of the VAV system is dynamically adjusted as the load changes. The V-shaped filter has a strong structure and good adaptability to wide wind speeds. The wind speed can reach 2.5m/s under the initial resistance condition of 250Pa, adapting to wind speed fluctuation conditions. When selecting the VAV system, the maximum design air volume should be used as the basis, and a 20%-30% fan pressure head margin should be reserved. It is also recommended to configure a differential pressure transmitter to monitor the resistance in real time. V-type filter efficiency grade (H13/H14) does not affect the air volume system adaptability. Aili Industrial V-type high-efficiency filter has a solid structure, rated air volume covering 2400-4200m³/h, and is suitable for CAV and VAV systems. Each unit has been scanned and tested for leaks one by one and a test report has been issued.
The selection of large air volume V-type high-efficiency filter requires comprehensive consideration of four core parameters: rated air volume, overall size, initial resistance and efficiency level. Common specifications include rated air volume covering 850-4200m³/h, external dimensions ranging from 287×592×292mm to 1220×610×292mm, and initial resistance as low as ≤200Pa. The selection steps include calculating the total air volume of the system, determining the air volume requirement of a single unit, selecting the overall dimensions according to the parameter table, checking the installation space (especially the depth direction, the standard is 292mm), selecting the efficiency level (H13 or H14), checking the initial resistance and evaluating the replacement cycle. It is recommended to reserve 10%-20% air volume margin when selecting a model to avoid neglecting the depth size, the impact of efficiency level on air volume, and the difference between initial resistance and final resistance. Aili Industrial provides a variety of dimensions and V-shaped configurations, with rated air volume covering 850-4200m³/h. It strictly complies with the EN1822 standard. Each unit has been scanned and tested for leaks one by one and a test report has been issued.
The V-type high-efficiency filter is arranged in a V-shape with multiple filter elements without partitions, which increases the filtration area to 3-5 times that of ordinary flat-plate filters under the same external dimensions. Its core principle is to expand the filter material from a two-dimensional plane to a three-dimensional space, making full use of the depth direction of the frame. The increased filtration area brings practical advantages such as low resistance (initial resistance can be as low as ≤200Pa), large air volume (rated air volume can reach 2400-4200m³/h), high dust holding capacity and reduced number of filters. V-type filters are suitable for large air volume scenarios in limited spaces such as the end of air-conditioning boxes, compact HVAC systems, return air ducts in clean factories, and upgrades of existing systems. When selecting, you need to confirm the installation depth, select a V-shaped configuration according to the air volume, and check the system resistance. Aili industrial V-type high-efficiency filters strictly comply with the EN1822 standard and are available in 3V, 4V, and 5V specifications. Each unit has been scanned and tested for leaks one by one and a test report has been issued.
V-Bank high-efficiency filter (V-type combined high-efficiency filter) uses multiple filter elements without partitions to form a V-shaped structure. The rated air volume can reach 2400-4200m³/h. It is suitable for constant air volume (CAV) and variable air volume (VAV) HVAC systems. Typical application scenarios include hospital operating rooms and ICUs, pharmaceutical GMP workshops, electronic and semiconductor clean workshops, food processing plants, data centers, hotels and schools and other commercial buildings, as well as industrial ventilation facilities such as power plants. V-Bank filters can be used as high-efficiency filtration or ULPA pre-protection at the end of air conditioning boxes in HVAC systems. They have technical advantages such as large air volume carrying capacity, low operating resistance, high dust holding capacity, and saving installation space. Aili Industrial V-Bank high-efficiency filters strictly comply with EN1822 standards, with efficiency levels covering H13 and H14, adapting to the needs of various HVAC air treatment systems. Each unit has been scanned and tested for leaks one by one and a test report has been issued.
The V-type partitionless high-efficiency filter uses multiple partition-less filter elements to form a V-shaped structure. The filtration area can reach 3-5 times that of ordinary filters, the rated air volume can reach 2400-4200m³/h, and the initial resistance can be as low as ≤200Pa. In large air volume systems, compared with ordinary high-efficiency filters, V-type filters have the advantages of reducing the number of filters, saving installation space, reducing installation costs, reducing operating energy consumption, and extending the replacement cycle. The efficiency level covers H13 and H14, and is suitable for large air volume scenarios such as terminal filtration of air-conditioning boxes, electronic semiconductors, pharmaceuticals and medical care, and power plants. When selecting, you need to pay attention to parameters such as rated air volume, initial resistance, efficiency level, and overall dimensions. Aili Industrial V-type partitionless high-efficiency filter strictly complies with the EN1822 standard and provides large air volume design, low resistance and high dust holding capacity, optional multi-material frames and unit-by-unit inspection services.
The V-type high-efficiency filter (V-Bank) uses multiple filter elements without partitions to form a V-shaped structure. The filtration area can reach 3-5 times that of ordinary filters. The designed air volume is more than 2 times higher than that of high-efficiency filters with partitions. The initial resistance can be as low as ≤200Pa. Compared with ordinary high-efficiency filters, V-type filters require fewer installations, smaller installation space, lower operating resistance, higher dust holding capacity and longer service life under the same air volume. The efficiency level covers H13 and H14, and is mainly used in scenarios such as terminal filtration of air-conditioning boxes, large air volume HVAC systems, electronic semiconductors, pharmaceuticals, medical and power plants. Aili industrial V-type high-efficiency filters strictly comply with the EN1822 standard, provide multiple specifications and are tested one by one, and support customized production.
The thickness (50mm, 70mm, 90mm, 120mm) and filter area of the high-efficiency filter without partitions directly affect the air volume carrying capacity, initial pressure difference, dust holding capacity and service life. 70mm is the standard configuration of FFU, which strikes a balance between space occupation and performance; 90mm and 120mm are suitable for equipment with ample space such as air-conditioning boxes, with larger filter area and longer replacement cycle. When selecting, a comprehensive judgment must be made based on the size of the installation space, system air volume, fan head margin and full life cycle cost. If space allows, choosing a thicker filter, lower energy consumption and longer replacement intervals can usually pay back the cost difference within 1-2 years. Aili Industrial provides multiple thickness specifications of 50-120mm and non-standard customization services. Each unit is scanned and tested for leaks one by one and a test report is issued. The engineering and technical team can assist in air volume calculation and resistance calculation.
The partition-less high-efficiency filter uses ultra-fine glass fiber filter paper and hot-melt adhesive line separation technology, and can cover the full range of efficiency levels of H13, H14 and ULPA U15, U16, and U17. According to the EN1822 standard, H13 efficiency ≥ 99.95%, H14 ≥ 99.995%, U15 ≥ 99.9995%, U16 ≥ 99.99995%, U17 ≥ 99.999995%. Different levels correspond to different cleanliness requirements - H13 is suitable for ISO 7-8 clean rooms, H14 is suitable for ISO 5-6 clean rooms, and the local penetration rates of H13 and H14 differ by ten times. ULPA conducts efficiency assessments in the particle size range of 0.1-0.2μm and is suitable for high cleanliness environments of ISO level 4 and above. When selecting a model, a comprehensive balance must be made based on the cleanliness level, industry standards, system air volume and budget. Aili Industrial has independent production capabilities throughout the industry chain and strictly follows the EN1822 standard. Each filter is scanned and tested for leaks one by one and a test report is provided. It supports full series customization of H13, H14 and U15-U17.
When the installation space of FFU, EFU, clean shed or other clean equipment is limited, high-efficiency filters without partitions can be considered. The partition-less structure uses glue lines to fix the fold distance of the filter material, and has a certain design space in terms of filter thickness, filter area and internal structure. The actual selection should not only focus on the thickness of the filter, but also need to comprehensively consider the filtration efficiency, target air volume, initial resistance, fan static pressure, sealing method and later replacement space. Aili Industry can match the specifications of high-efficiency filters without partitions based on the equipment installation dimensions and operating parameters.
Partitionless high-efficiency filters can be used in clean environments such as semiconductors, electronic manufacturing, photovoltaics, pharmaceuticals, laboratories and precision manufacturing according to different specifications, and are often used in conjunction with FFU, EFU, clean sheds and clean room terminal air supply equipment. Different applications have different requirements for filtration efficiency, air volume, resistance, size, thickness and sealing methods, so selection needs to be based on specific equipment and clean environments. Aili Industry can match the specifications of high-efficiency filters without partitions based on industry applications, equipment structures and project parameters.
High-efficiency filters without partitions usually adopt filter material folding, glue line separation and outer frame sealing structure, without using traditional paper partitions or aluminum partitions. Its specifications mainly include overall dimensions, thickness, filtration efficiency, air volume, initial resistance, outer frame material and sealing method, etc. When used in FFU, EFU, clean sheds and clean room terminal air supply equipment, it needs to be matched based on the installation space, fan performance and target air volume. Aili Industry can provide corresponding specifications and configurations of high-efficiency filters without partitions based on equipment size, air volume, filtration efficiency and usage environment.
Aili Industrial develops and manufactures
FFU, EFU, HEPA/ULPA air filters, high-efficiency air supply vents, fan boxes and other clean air equipment. Relying on motors, fans, control systems, filters and complete machine supporting capabilities, we provide selection and customization support for clean room and production equipment projects.
