Compressor Intake Filter (CIF)
The CIF is manufactured of weatherproofed 14 gage galvanized steel. Aluminum, double wall, stainless and cold-rolled steel may also be specified. Along with the different materials of construction, the CIF can be epoxy coated to prevent corrosion on the exterior of the unit. Standard features: rain louver with bird screen; 12-24 inch bag filter; 2 or 3 passes of Purafil chemical media in disposable MediaPAK modules; plenum with mesh cone; 1 or 2 inch prefilter; 5 or 12 inch final filter. Optional features: 12 inch HEPA filter; booster fan.

Corrosive Air Unit (CA)
The CA is a self contained air purification system designed to recirculate and clean the air within controlled environments. It can be used alone or in conjunction with Purafil’s PPU. Standard features: full charge of media manufactured by Purafil; direct drive fan; variable frequency drive; inlet and outlet grilles; vibration isolation for quiet operation; 0.1 iwg external static (saturated filters); full particulate filtration; grey polyurethane finish; painted cold-rolled steel. Optional features: aluminum or stainless steel housing; special motors; openings for connection to Purafil PPU; floor casters (vertical unit only); additional sound insulation for occupied spaces; weatherproofing (horizontal unit only); additional external static; gage units to measure particulate pressure differential; reverse airflow in vertical limits (downward).

Deep Bed Scrubber (DBS) – Corrosion Control
The DBS is designed to sit outside the protected space and provide clean pressurization air to rooms equipped with electronic process control systems. Standard features: OnGuard CCT for clean air verification; 3003 H-14 aluminum construction; MERV 6 efficient prefilter; high-efficiency final filter; up to four different dry-chemical media manufactured by Purafil; mill and chemical duty motor; skid mounted; 1.0 iwg (249 Pa) external static. Optional features: stainless steel or double wall construction; explosion-proof motor; rain louver with bird screen; redundant blower, motor and back draft damper; direct drive blower; additional external static; air measuring station; pre and final filter gages.

Deep Bed Scrubber (DBS) – Odor Control
The DBS is used at small headworks, large pump stations, in screening rooms and at the discharge of biofilters for control of sewage odors. It is sized for airflows from 500 to 8,000 cfm (850 to 13,592 m3/hr). Standard features: aluminum or stainless steel construction; full charge of media manufactured by Purafil; externally mounted, enclosed blower system, skid mounted, up to four media bed sections for multiple contaminant challenges; mist eliminator/prefilter; designed for 1.0 iwg (249 Pa) external static pressure.

Drum Scrubber (DS)
The Drum Scrubber is used in industrial applications to eliminate odors vented from industrial tanks and at pump stations, lift stations and wet wells to eliminate sewage odors. Standard features: linear, low-density polyethylene canister; integrated motor housing; TEFC motor; high-density, rotomolded, polypropylene blower assembly, adjustable damper (PVC); stainless steel and rubber latches; stainless steel fasteners; thermoplastic packing and FRP lid, polypropylene impellers and motor shaft bushings; integrated rainhood, Fernco flexible coupling at inlet; airflows up to 1,000 cfm (1,700 m3/hr). Media volume by model: DS-100: 5 ft3 (0.14 m3); DS-300: 10 ft3 (0.28 m3); DS-500: 17 ft3 (0.48 m3); DS-1000: 39 ft3 (1.10 m3).

Electronic Cabinet Unit (ECU)
The ECU protects freestanding electronics and electric remote controls from the damaging effects of corrosive airborne contaminants. Standard features: 100 cfm (170 m3/hr); direct drive motor; prefilter and final filter for control of dust and particulates; Purafil MediaPAK modules for control of corrosive gases. Optional features: variable frequency drive motor; cabinet paint colors to match computer or electronic cabinet.

Manhole Scrubber
The MOLE Manhole Scrubber is a passive odor control system for street-level sewer manholes. Odors enter the MOLE through the bottom of the unit and flow upwards through two vertically stacked disposable sacks of Odormix media.

Parallel Bed Scrubber
The PBS is used at large headworks, full treatment plants and large digesters. It is sized for airflows from 8,000 cfm (13,592 m3/hr) to greater than 40,000 cfm (67,968 m3/hr). Standard features: aluminum or stainless steel construction; full charge of media manufactured by Purafil; externally mounted or enclosed blower system, skid mounted, up to four media bed sections for multiple contaminant challenges; mist eliminator/prefilter; designed for 1.0 iwg (249 Pa) external static pressure.

Positive Pressurization Unit (PPU)
The PPU is a self-contained system designed to provide pressurization air that is free of corrosive gases to environments containing sensitive electronics. Standard features: full charge of media manufactured by Purafil; direct drive fan; variable frequency drive; integral balancing damper; 0.2 iwg external static (saturated filters); particulate filtration; grey polyurethane paint; high efficiency particulate final filter; disposable media modules. Optional features: aluminum or stainless steel housing; special motors; reverse airflow in vertical units (upward); optional air openings to match other equipment; floor casters (vertical unit only); additional sound insulation for occupied spaces; weatherproofing (horizontal unit only); additional external static; gage units measuring room pressure, outside air, and particulate pressure; air measuring station.

Purafil Side Access System (PSA)
Standard features: aluminum double-wall casing, custom prefilter and/or final filter sections, doors on one side on units up to 3 feet , doors on both sides on units 4 feet and above, nylon glass fibre reinforced compression latches and handles, filter tracking, heavy support channels, user’s choice of Purafil dry-chemical media, J-Track technology (patent-pending). Optional features: painted aluminum, galvanized and stainless steel; rain louver with bird screen; fan-powered options for retrofit applications. The PSA incorporates the patent-pending J-Track technology, which offers a higher filtration efficiency than other side access system designs. Call Purafil for more information.

Room Air Purifier (RAP)
The RAP is a free-standing, powered filtration system designed for local odor control in meeting rooms, waiting rooms, offices and conference rooms. The system is available in 100 cfm (170 m3/hr) and 750 cfm (1274 m3/hr) designs. Standard features: 115 Volt, 60 Hz fan; variable speed controller, sound level: 49 dbA for the 100 cfm model and 55 dbA for the 750 cfm model. Constructed of particle-board or galvanized metal. The 100 cfm model contains a carbon tandem filter. The 750 cfm model contains a polymedia prefilter, 3 PK-18 MediaPAK modules with Purafil media, and a JFL-90 final filter.

Tub Scrubber System (TSS) – Corrosion Control
The TSS provides clean air in controlled environments housing sensitive electronics. Standard features: OnGuard A-Prompt monitor for clean air verification; full charge of media manufactured by Purafil; three-foot media bed depth; constructed of fiberglass, 3003 H-14 aluminum, or 304 or 315 stainless steel; 1.0 iwg (249 Pa) external static pressure; easily accessible fill port and clean-out port; MERV 6 efficient prefilter; high-efficiency final filter preceded by a MERV 6 efficient pre-final filter; externally mounted, enclosed blower system; damper controlled air inlet; prefilter housing for blow-through system. Optional features: air measuring station, cfm gage, room pressure gage and housing (shipped separately for field installation); particulate pre and final filter gages and housing; other media manufactured by Purafil; rain louver with bird screen for inlet.

Tub Scrubber System (TSS) – Odor Control
The TSS is used at small headworks, large pump stations, in screening rooms and at the discharge of biofilters for control of sewage odors. It is sized for airflows from 500 to 6,000 cfm (850 to 10,194 m3/hr). Standard features: full charge of media manufactured by Purafil; three-foot media bed; fiberglass construction; easily accessible fill and clean-out ports; externally mounted, enclosed blower system; damper control air inlet; prefilter housing for blow-through systems; mist eliminator/prefilter.

MONITORS

Corrosion classification coupons are used to characterize the destructive potential of an environment and to verify the need for or effectiveness of chemical filtration. Purafil offers a variety of coupon types for various environments and applications. Purafil’s copper and silver coupons are helpful in determining the level of acid gases, including chlorine gas, present in pulp and paper mills as well as other industrial applications. Use Purafil’s copper, silver and gold coupons in applications where instrumentation with gold-plated edge card connectors are present. Purafil’s Silver 6-Pack includes six silver coupons designed to monitor contaminants specific to museum and preservation environments. The following is included in Purafil’s coupon analysis report: photograph of returned coupon strips, corrosion film thickness on coupons, information on general classes of gases present, and estimated concentration levels and humidity effects.

OnGuard 2000-INS (Intelligent Network Station)
The OnGuard 2000-INS can be used in applications were an external PC/DCS serves as the interface to the OnGuard unit or to a network of units, and where the need for controlling and monitoring the OnGuard unit itself is not necessary. The OnGuard 2000-INS offers all of the features and functions of the OnGuard 2000, except for the LCD display and keypad. Available as optional features: 4-20 mA multiplexer, differential pressure sensor, and relay output. Replacement copper, silver and relative humidity sensors are available separately for reorder.

OnGuard 2000-RSM (Remote Sensor Module)
The OnGuard 2000-RSM is strictly an environmental monitor and can only be accessed through a host OnGuard unit (OnGuard 2000 or OnGuard 2000-INS) or through an external PC via a host OnGuard unit. The OnGuard 2000-RSM cannot control an OnGuard network. The OnGuard 2000-RSM has all of the capabilities of the OnGuard 2000 and OnGuard 2000-INS to monitor corrosion, temperature and relative humidity, but it is not equipped for independent communications. The OnGuard 2000-RSM provides an economical alternative to applications that require multiple testing points but are close enough that the individual units can be wired together for a network. Up to 31 OnGuard 2000-RSMs can be connected to a host OnGuard 2000 or OnGuard 2000-INS to create an OnGuard network. Available as optional features: differential pressure sensor and relay output. Replacement copper, silver and relative humidity sensors are available separately for reorder.

OnGuard 2000
The OnGuard 2000 Atmospheric Corrosion Monitor provides real-time information on the severity level of corrosive gases in the local environment. The device monitors corrosion on a continuous basis and calculates cumulative and incremental corrosion rates. It also measures temperature and relative humidity. All functions and features on the OnGuard 2000 can be accessed via the device’s LCD and keypad. Available as optional features: 4-20 mA multiplexer, differential pressure sensor, and relay output. Replacement copper, silver and relative humidity sensors are available separately for reorder.

OnGuard A-Prompt
The OnGuard A-Prompt Monitor, when read by an OnGuard 2000 Monitor, can be used to immediately verify the cleanliness of discharge air from your dry-scrubbing system or to pinpoint corrosion-causing events. The A-Prompt is a standard feature in Purafil’s Tub Scrubber Systems.

OnGuard CCT (Continuous Corrosion Transmitter)
The OnGuard CCT measures in real-time the amount of corrosion forming on copper and silver surfaces and transmits this data to the control system via a 4-20mA output signal. The OnGuard CCT has a service life of 4000 Angstroms and is accurate within 0.5 to 1 percent of full span. Updated readings are provided once every hour.

OnGuard ERM (Environmental Reactivity Monitor)
The OnGuard ERM measures in real-time the reactivity level of airborne molecular contaminants (AMC) in cleanrooms and transmits this data to the control system via a 4-20mA output signal. The OnGuard ERM provides continuous monitoring of contaminants at levels equal to or less than 1 ppb and is accurate within 0.5 to 1 percent of full span. The OnGuard ERM provides updated readings once every minute.