74 Questions
What is the primary purpose of air filters produced by GAFCO?
To remove contaminants from the air
Which of the following is NOT a measure of filter performance?
Price
What does the Total Cost of Ownership include?
Purchase price, storage costs, replacement costs, and any other costs associated with owning a product
What are the 5 criteria for media selection according to GAFCO?
Efficiency, pressure drop, dust holding capacity, total cost of ownership, and supplier consistency
What type of filter is commonly used as a first stage filter in most HVAC applications?
Aluminium filters
What is a unique feature of aluminium filters?
They can be washed with water, cleaned, and reused
What standards can aluminium filters achieve?
G1, G2 to EN779 (MERV 1, MERV 3 to ASHRAE 52.2)
Which of the following contaminants can aluminium filters eliminate?
All of the above
What gives GAFCO an edge over competitors when it comes to supplying aluminium filters and aluminium filter media?
GAFCO produces has a cost advantage as it produces the filter media and can also deliver the filters or media in many configurations and number of layers.
What is a characteristic of aluminium filters in terms of airflow and resistance?
They have extremely low resistance to airflow
Where are Aluminium commonly found?
All of the above
What are the most common types of frames for aluminium filters?
Aluminium or galvanized metal frames
Why are Pleated filters named so?
Because the media is pleated to extend the filtration surface area
What standards do Pleated filters achieve?
G4 to EN779 standard (MERV 8 to ASHRAE 52.2 standard)
How many pleats does GAFCO's standard 24” x 24” x 2” Pleated filter contain?
18 pleats per filter
What advantage does the welded wire mesh backing offered in GAFCO's Pleated filters deliver?
It improves the filter rigidity against air flow
What is one feature of the frames in GAFCO Pleated filters?
They are rigid water-resistant dye-cut cardboard frames
What versions do Pleated filters come in?
Standard capacity (SC) and High capacity (HC)
What is the difference between the standard capacity and high-capacity versions of pleated filters?
The high-capacity model has more pleats
What material is used in GAFCO’s Pleated filters?
Synthetic
How can V-type filters be cleaned for reuse?
By blowing air into the filter surface downstream to upstream
How many pleats does a standard 24” x 24” x 2” V-type filter from GAFCO contain?
16 to 18 pleats per filter
What is the impact of a higher media area on filter performance?
It results in a lower velocity on the media and therefore a lower pressure drop and higher filter efficiency
What conditions can V-type filters withstand?
Variable and turbulent air flow systems and harsh operating conditions
How should the pleats of V-type filters be aligned when installed?
Both vertically (preferred) or horizontally
V-type filters can be supplied in different sizes and pleat counts.
True
Why are pocket (bag) type air filters a preferred choice in HVAC installations?
Because they are extremely configurable and economical for the performance they deliver
What makes pocket (bag) type filters economical to produce?
There is very little metal used, and very little glue needed to seal the frame against the media
How can you identify the efficiency of a pocket (bag) type filter?
By the colour of the media
What standards do pocket filters meet?
G4 to F9 to EN779 standard (MERV 8 to MERV 16 to ASHRAE 52.2 standard)
What material is GAFCO's pocket filters made from?
Progressive density synthetic media or glass fiber
What is one advantage of GAFCO pocket (bag) filters compared to competitors' filters?
They operate much longer before they reach the final pressure drop and require replacement
What is one feature of GAFCO's pocket (bag) filter design?
The filter frames are supplied with encapsulated pocket channels
How does GAFCO ensure full utilization of the media area in their pocket filters?
By using controlled media spacers that prevent pocket to pocket contact
What happens if the spacer in a pocket filter is too big?
The pockets inflate too much to the point that they touch each other under air flow
Why is mini pleated media commonly used in high efficiency filters?
Because it is very dense and efficient, requiring a high media area to generate sufficient airflow
How many pleats per inch can GAFCO's advanced mini pleating machines deliver in mini pleat filters?
8 to 13 pleats per inch
Why does GAFCO source hot melt from a special source in Portugal for their mini pleat media beads?
Because it has been proven through testing to generate a rigid media pack
What is the purpose of hot melt pleat separators in mini pleat filters?
They serve as spacers to prevent pleat-to-pleat contact ensuring smooth airflow
What is the main difference between regular mini pleat filters and compact mini pleat filters?
Compact models are capable of delivering much higher air flow volumes
Where are regular mini pleat filters most suitable for installation?
Inside cleanrooms
How can you tell if a mini pleat filter is a HEPA filter?
None of the above
How many pleats per inch can most of GAFCO's competitors deliver in their mini pleat filters?
10 pleats per inch
Where does GAFCO source its mini pleat filter production equipment?
From the most advanced German manufacturers
How does GAFCO ensure the quality of its filters?
By ensuring every step of production is Quality Assured, and the final product is Quality Controlled
Why does GAFCO claim to have superior cleanroom knowledge compared to its competitors?
Because GAFCO designs, constructs, tests and certifies cleanrooms to international standards
Who does GAFCO supply filters to?
Residential, Commercial, and Industrial applications
What is the efficiency of an H14 HEPA filter at MPPS?
Greater than 99.995%
What are the benefits of GAFCO's mini pleating technology?
All of the above
Why are the two seal types for HEPA and ULPA mini pleat filters?
Gasket and Gel seals
What is unique about the gasket offered by GAFCO?
It is a one-piece continuous polyurethane gasket that eliminates any potential of air bypass
Why are V-Bank filters commonly installed in HVAC systems rather than installed inside cleanrooms on the ceiling?
They are meant to filter large volumes of air flow
Why have V-Bank filters replaced aluminium separated filters in the industry?
Mini pleat technology is far superior and can deliver much higher media area for the same filter size
What is a key advantage of the mini pleating technology used in V-Bank filters?
It provides an exceptionally high ratio of filter media area to filter face area, allowing for higher dust holding capacities
What types of seals are used in V-Bank filters?
Gasket or gel seals
What does GAFCO offer to prevent leakage from V-Bank filters?
A one-piece continuous gasket
Where do the raw materials for GAFCO's filters come from?
The best supplier’s global manufacturers have to offer
What are Ceiling Modules or Terminal Modules?
They are HEPA or ULPA filters with enclosures ready for cleanroom installation
Where are Ceiling Modules typically installed?
In the room side of cleanrooms such as surgery and isolation rooms, laboratories, and pharmaceutical production areas
Which filter classes can ceiling modules be fitted with?
HEPA and ULPA filters
What is unique about GAFCO's ceiling modules?
They are lightweight, easy to install and maintain
How does GAFCO ensure the quality of their units?
Each unit is individually inspected, leak tested, and serial numbered
What is the characteristic of the filter housing or enclosure in ceiling modules?
It is made from clear anodized extruded aluminium profiles and is permanent
What options are available for filter seals in ceiling modules?
Gel seal or gasket seal filters
What are gas phase filters used for?
Filtering out chemicals from the air
What is another common name for gas phase filters?
Carbon filters
Which of these materials can be used in gas phase filters?
Typical activated carbon, impregnated activated carbon, alumna blend activated carbon, potassium blend activated carbon, zeolite blend
How is the lifespan of a gas phase filter usually determined?
By its weight gain over time
What is an important factor in determining the efficiency of a gas phase filter?
The residence time of airflow passing through the media
Which type of filters can offer better performance for more specific gas filtration?
Granular and pallet type filters
What is the main advantage of granular and pallet gas filters?
They efficiently remove a wide range of Odors and gases, and can target specific gases or chemicals
How does the structure of granular and pallet gas filters differ from laminated carbon filters?
The frame is fully loaded with granules, maximizing the amount of media and volume inside the filter
What is the advantages of granular and pallet gas filters compared to laminated carbon filters?
They are customizable with several types of media
What makes granular filters highly customizable?
They can fit any type of medium, whether from the activated carbon range or the engineered media range
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