Marlo Incorporated

MARO SERIES - Economy type RO machine designed for commercial applications requiring purified water (90%+ salt rejection). Nominal output capacities of 215-2,535 GPD. Vertically arranged membrane housings for minimal floor space requirements.

Standard Features/Benefits

• High rejection, 2.5" diameter thin-film composite (TFC) membrane elements in a spiral-wound configuration.

• Stainless steel membrane housings with PVC end-cap material.

• Brass constructed, rotary vane pump with ODP motor (120/220V, 1-Phase).

• Polypropylene pre-filter housing with 5.0-micron cartridge.

• Epoxy -coated carbon steel frame assembly.

• Automatic system inlet feed valve.

• System feed pressure gauge.

• Panel-mounted product and reject visual flow rota-meters.

Optional Equipment

• Hydraulic Upgrade Package - Replaces brass feed pump with a stainless steel pump.

• Electrical Upgrade Package - Includes a compact product water conductivity monitor and a low inlet pressure shut-off switch.

MRO-4V SERIES - Designed for commercial and light industrial applications requiring high purity water (98-99% salt rejection). Nominal output capacities of 3,600-9,000 GPD. Vertically arranged membrane housings for minimal floor space requirements.

Standard Features/Benefit

• High rejection, 4" x 40" thin-film composite (TFC) membrane elements in a spiral-wound configuration.

• Stainless steel membrane housings with PVC end-cap material (300 psig rating).

• Stainless steel multi-stage feed pump with TEFC motor (230/460V, 3-Phase).

• Polypropylene pre-filter housing with 5.0-micron cartridge.

• Epoxy -coated carbon steel skid/frame assembly.

• NEMA-4X system controller complete with operator lights and switches for simple operation. Includes pre-wired motor starter, low inlet pressure switch with alarm, and pre-treatment interlock.

• Compact product water conductivity monitor with digital display.

• Panel-mounted product, reject, and recycle visual flow rota-meters.

• Panel-mounted stainless steel system pressure gauges and sampling valves.

• PVC low pressure piping/valves and brass/stainless steel high pressure tubing and valves.

• Automatic system inlet feed valve.

• Automatic membrane flush cycle (after system shutdown).

Optional Equipment

• Hydraulic Upgrade Package - Replaces all brass high pressure tubing/valves with stainless steel for extra corrosion resistance.

• Electrical Upgrade Package - Uses a programmable logic controller (PLC) for premium system operation and control. Suggested for RO systems required to control multiple equipment. Includes a full-size product water conductivity monitor with adjustable alarm. Allows the membrane flush cycle to be programmed at various timed intervals.

• Skid-Mount Packages - RO machines are available with the necessary pre-treatment and re-pressurization equipment mounted to a structural carbon steel skid and pre-piped/pre-wired to the fullest extent. Greatly reduces installation time and costs.

MRO-4H SERIES- Designed for commercial and industrial applications requiring high purity water (98-99% salt rejection). Nominal output capacities of 10,800-28,800 GPD. Horizontally arranged membrane housings for maximum product output with the minimal smallest floor-space requirements.

Standard Features/Benefits

• High rejection, 4" x 40" thin-film composite (TFC) membrane elements in a spiral-wound configuration.

• FRP membrane housings with PVC end-cap material (600 psig rating).

• Stainless steel multi-stage feed pump with TEFC motor (230/460V, 3-Phase).

• Epoxy -coated carbon steel skid/frame assembly.

• Polypropylene pre-filter housing with 5.0-micron cartridge (Models 10,800-16,200 GPD).

• Stainless steel pre-filter housing with 5.0-micron cartridges (Models 18,000-28,800 GPD).

• NEMA-4X system controller complete with operator lights and switches for simple operation. Includes pre-wired motor starter, low inlet pressure switch with alarm, and pre-treatment interlock.

• Compact product water conductivity monitor with digital display.

• Panel-mounted product, reject, and recycle visual flow rota-meters.

• Panel-mounted stainless steel system pressure gauges and sampling valves.

• PVC low pressure piping/valves and brass/stainless steel high pressure tubing and valves.

• Automatic system inlet feed valve.

• Automatic membrane flush cycle (after system shutdown).

Optional Equipment

• Hydraulic Upgrade Package - Replaces all brass high pressure tubing/valves with stainless steel for extra corrosion resistance. Standard for 18,000-28,800 GPD models.

• Electrical Upgrade Package - Uses a programmable logic controller (PLC) for premium system operation and control. Suggested for RO systems required to control multiple equipment. Includes a full-size product water conductivity monitor with adjustable alarm. Allows the membrane flush cycle to be programmed at various timed intervals. Standard for 18,000-28,800 GPD models.

• Skid-Mount Packages - RO machines are available with the necessary pre-treatment and re-pressurization equipment mounted to a structural carbon steel skid and pre-piped/pre-wired to the fullest extent. Greatly reduces installation time and costs. Not available for 18,000-28,800 GPD models.

• Clean-in-Place Packages - For periodic cleaning of the membrane elements to remove mineral scale and biological fouling. Includes a skid mounted and pre-wired transfer pump, batch solution tank, inlet filter housing, isolation valves, and quick disconnect cleaning ports. Recommended for 18,000-28,800 GPD models to maximize membrane life and significantly reduce operating costs.

MRO-8H SERIES - Designed for industrial applications requiring high purity water (98-99% salt rejection). Nominal output capacities of 36,000-288,000 GPD (25-200 GPM). Flexible design allowing for easy customization to meet tight engineering specifications.

Standard Features/Benefits

• High rejection, 8" x 40" thin-film composite (TFC) membrane elements in a spiral-wound configuration.

• FRP membrane housings with PVC end-cap material, stainless steel side-entry feed/reject ports, and white polyurethane finish. Designed for 400 psig pressure rating.

• Stainless steel multi-stage feed pump with TEFC motor (230/460V, 3-Phase).

• Epoxy -coated carbon steel skid/frame assembly.

• Stainless steel pre-filter housing with 5.0-micron cartridges.

• NEMA-4 programmable logic controller (PLC) package complete with operator lights and switches for optimal system control. Includes pre-wired motor starter, low inlet and high pump discharge pressure switches with alarms, and pre-treatment interlock.

• Product water conductivity monitor with digital display and adjustable alarm.

• Panel-mounted product, reject, and recycle flowmeters with digital display.

• Panel-mounted stainless steel system pressure gauges and sampling valves.

• In-line system temperature indicator.

• PVC low pressure piping/valves and stainless steel high pressure piping and valves.

• Automatic system inlet feed valve.

• Automatic membrane flush cycle (at programmed timed intervals).

Optional Equipment

• All 304/316 stainless steel process piping and valves (low and high pressure lines).

• Premium-efficient feed pump motors.

• Inlet feed-water pH monitor/controller.

• Inlet feed-water ORP monitor/controller.

• Inlet feed-water hardness monitor.

• Inlet feed-water Silt Density Index (SDI) test assembly.

• RO product diversion valve.

• Touch-screen operator interface terminals in lieu of lights and switches.

• Skid-mounted membrane Clean-in-Place systems.

• RO system performance evaluation software packages.

• Product water storage tanks and re-pressurization pump systems.

• Multi-media, activated carbon, and water softener pre-treatment systems.

• Inlet feed-water chemical injection systems for pH adjust, dechlorination, and anti-scalant.

• Separate-bed, mixed-bed, and electro-deionization post-treatment systems.

 
MEDIA FILTRATION SYSTEMS

FILTER TYPES

• 'MID' MULTI-MEDIA FILTERS - High efficiency, in-depth filter system using a layered bed of anthracite, silica sand, and two grades of garnet for excellent filtration down to the order of 5-10 micron. Multi-Media has the highest service flow rates available in a pressure type filter and suitable for final filtration of most city water and well water supplies. Not recommended as the primary filtration means for extremely high turbidity applications.

• 'AGA' FILTER-AG® FILTERS - General service filter system using a non-hydrous silicon dioxide media for suspended solids removal down to the 20-40 micron range. The fractured edges and irregular surface of the media creates less pressure drop by allowing deeper sediment penetration without caking and blinding the bed surface. Filter-Ag has a lighter weight than traditional sand media thereby requiring lower backwash rates and thus better water conservation.

• 'MGA' IRON REMOVAL FILTERS - Filter system capable of reducing iron, manganese, and hydrogen sulfide using manganese greensand filter media. Manganese greensand is formulated from a glauconite coated with varying types of manganese oxides. Soluble iron, manganese, and hydrogen sulfide are then oxidized and precipitated by contact with these oxides. Precipitates are then filtered and removed by the backwash step. Oxidative capacity of the media must be restored through either periodic regeneration with a weak potassium permanganate (KMnO4) solution or a continuous chemical feed of KMnO4, chlorine, or a combination of both.

• 'ACA' ACTIVATED CARBON FILTERS - Granular Activated Carbon (GAC) is designed for the reduction of tastes, odors, and dissolved organic material from municipal and industrial water supplies. The most common application is the removal of free chlorine from water supplies as pre-treatment to other water treatment systems such as reverse osmosis. Inlet water to activated carbon systems should be relatively free of turbidity and iron for optimal performance. Numerous types of activated carbon are available for specialty applications.

• 'ANA' NEUTRALIZATION FILTERS - Calcite is a crushed and screened calcium carbonate media used to neutralize acidic or low pH water supplies to a neutral, less corrosive effluent. Acidic waters slowly dissolve the calcium carbonate on contact to raise the pH which reduces the potential leaching of copper and other metals found in piping systems. Media will need to be added periodically as it depletes in the filter vessel. Since the effluent water will increase in calcium level, a water softener may be required after the neutralizing filter.

FILTER MODELS

MFG SERIES - For use with any of the above filter technologies. Designed for smaller applications under 40-GPM per filter vessel but can be configured in multi-tank parallel systems for higher flow rates. Limited to tank diameters up to 36" and service pipe connections up to 2" NPT.

Features/Benefits

• Fiberglass reinforced polyester (FRP) pressure vessels for 150 psi working pressure.
• Brass, top mounted multi-port control valves.
• Integral timeclock controller for automatic backwash/rinse cycles.
• Self-adjusting flow control to maintain accurate backwash rates.
• Internal distribution system for minimal pressure drop and proper backwashing.

Optional Equipment

• Pressure differential switch initiated backwash cycle.
• Separate source backwash valves.
• Inlet/outlet pressure gauges and sample valves.
• Potassium permanganate regenerant systems (for MGA filters).
• Skid mounted, pre-piped, and pre-wired systems (for multiple filters).
   

MFS SERIES - For use with any of the above filter technologies. Designed for larger commercial and industrial applications with multi-tank parallel systems common for high flow rates. Tank diameters up to 144" and service pipe connections to 8" flange are available.

Features/Benefits

• Epoxy lined and prime exterior finished carbon steel pressure vessels. Non-ASME construction with 100 psig working pressure.
• Galvanized steel face-piping assembly with cast iron, normally-open, "Y" pattern diaphragm control valves. Filters with service piping 6" and larger utilize flanged carbon steel face-piping and double-acting butterfly control valves.
• Pilot stager valve controller for automatic backwash operation. Pre-wired in a NEMA-12 enclosure with an adjustable timeclock for backwash initiation.
• Self-adjusting flow control to maintain accurate backwash rates.
• PVC media-retaining underdrain distribution system in either hub-radial or header-lateral configurations for minimal pressure drop and proper backwashing.

Optional Equipment

• ASME constructed, stamped, and certified pressure vessels for varying working pressures.
• "Safety Blue" finish painted vessel exteriors. Alternative colors are available.
• Pressure differential switch initiated backwash cycle.
• Separate source backwash valves.
• Inlet/outlet pressure gauges and sample valves.
• Sch 80 PVC face-piping and thermo-plastic diaphragm valves (1-3" service).
• Sch 80 PVC face-piping and butterfly valves (3-8" service).
• 304/316 Stainless steel pressure vessels, face-piping, and internal distributors.
• Manual system valves for operator-performed backwash cycle.
• Chemical pre-dosing injection equipment.
• Potassium permanganate regenerant systems (for MGA filters).
• Air-scour backwash systems (for high particulate applications).
• Steam or hot water sanitizable systems (for ACA filters).
• Programmable Logic Control (PLC) electrical packages.
• Skid mounted, pre-piped, and pre-wired systems (for multiple filters).

DEIONIZATION SYSTEMS

DEIONIZER MODELS

MSB SERIES - Separate-bed ion exchange system designed for industrial high-purity water applications. Individual tank capacity ranges from 100,000 grain to 3,440,000 grain with continuous flow rates of 5-600 GPM. Tank diameters from 16" to 96" and service pipe connections from 1" NPT to 6" flange are available. Single and twin alternating systems are available with a wide variety of hardware and instrumentation packages. Standard design assume use of 30% hydrochloric acid and 50% sodium hydroxide chemical for resin regeneration. Contact Marlo, Inc. for information on larger tank sizes and custom sized applications.

Features/Benefits
Heavy-gauge carbon steel pressure vessels internally lined with a chemically resistant vinylester coating. All exterior surfaces are coated with a acid and caustic resistant "Safety Blue" paint finish. Non-ASME construction with 100 psig working pressure.

DEALKALIZER SYSTEMS

DEALKALIZER MODELS

MATD SERIES - Designed for commercial and industrial boiler-feed applications demanding a continuous dealkalized water supply. All systems are twin-alternating configurations with one tank in regeneration or stand-by at all times. Individual tank capacity ranges from 5,000 grain to 150,000 grain with continuous flow rates of 1-45 GPM. Tank diameters up to 30" and service pipe connections up to 1.5" NPT are available. Water softener pre-treatment is required.

Features/Benefits

• Fiberglass reinforced polyester (FRP) pressure vessels for 150 psi working pressure.
• High capacity, strong-base anion exchange resin in chloride-form.
• Brass, top mounted twin-tank control valve with integral brine injector.
• Built-In control valve alternator for continuous dealkalized water supply.
• Automatic-reset water meter for volume initiated regeneration.
• Self-adjusting flow control to maintain accurate backwash rates.
• Internal distribution system for minimal pressure drop and optimal regeneration.
• Rigid, polyethylene brine tanks with dry-salt shelf platform and water re-fill valves.
• Caustic feed system including metering pump, pump stand, and automatic controls.

Optional Equipment

• Electronic water meter for volume initiated regeneration, flow display, and totalization.
• Skid mounted, pre-assembled, and pre-loaded systems.

MDAS SERIES - Designed for larger industrial boiler-feed applications. Individual tank capacity ranges from 50,000 grain to 980,000 grain with continuous flow rates of 10-300 GPM. Tank diameters from 20" to 72" and service pipe connections from 1.25" NPT to 3" NPT are available. Single tank, multi-tank parallel, twin alternating, and triple alternating systems are available with a wide variety of timer and water meter controllers. Contact Marlo, Inc. for information on larger tank sizes and custom sized applications.

Features/Benefits

• Epoxy lined and prime exterior finished carbon steel pressure vessels. Non-ASME construction with 100 psig working pressure.
• High capacity, strong-base anion exchange resin in chloride-form.
• Galvanized steel face-piping assembly with cast iron, normally-open, "Y" pattern diaphragm control valves.
• Pilot stager valve controller for automatic regeneration operation. Pre-wired in a NEMA-12 enclosure with an adjustable timeclock for regeneration initiation.
• Self-adjusting flow control to maintain accurate backwash rates.
• Pressure-compensated brine injector for correct brine flow and concentration.
• PVC media-retaining underdrain distribution system in either hub-radial or header-lateral configurations for minimal pressure drop and proper regeneration.
• Rigid, polyethylene brine tanks with dry or wet-salt storage and water re-fill valves.
• Caustic feed system including metering pump, pump stand, and automatic controls.

Optional Equipment

• ASME constructed, stamped, and certified pressure vessels for varying working pressures.
• "Safety Blue" finish painted vessel exteriors. Alternative colors are available.
• Mechanical automatic-reset water meters for volume initiated regeneration.
• Electronic water meters for volume initiated regeneration, flow display, and totalization.
• Twin alternating configurations with remote water meter (mechanical or electronic) and electro-mechanical controller for continuous soft water supply.
• 'MX' Electronic programmable cycle controllers for systems up to 3 softener tanks. Flexible system control for almost any configuration using timer or volume initiated regeneration. "Additive Flow Feature" for automatically bringing additional tanks on-line as service flow increases.
• Inlet/outlet pressure gauges and sample valves.
• Sch 80 PVC face-piping and thermo-plastic diaphragm valves.
• 304/316 Stainless steel pressure vessels, face-piping, and internal distributors.
• Manual system valves for operator-performed regeneration cycle.
• Bulk brine storage vessels and brine pump skid systems.
• Programmable Logic Control (PLC) electrical packages.
• Skid mounted, pre-piped, and pre-wired systems (for single/multiple softeners).

WATER SOFTENER SYSTEMS

SOFTENER MODELS

MGT SERIES - Designed for a wide range of commercial and industrial applications. Individual tank capacity ranges from 15,000 grain to 1,200,000 grain with continuous flow rates of 1-215 GPM. Tank diameters up to 42" and service pipe connections up to 3" NPT are available. Single tank, multi-tank parallel, twin alternating, and triple alternating systems are available with a wide variety of timer and water meter controllers.

Features/Benefits

• Fiberglass reinforced polyester (FRP) pressure vessels for 150 psi working pressure.

• High capacity, sulfonated polystyrene cation exchange resin in sodium-form.

• Brass, top mounted multi-port control valves with integral brine injector.

• Self-adjusting flow control to maintain accurate backwash rates.

• Internal distribution system for minimal pressure drop and optimal regeneration.

• Rigid, polyethylene brine tanks with dry-salt shelf platform and water re-fill valves.

Optional Equipment

• Attached mechanical automatic-reset water meters for volume initiated regeneration.

• Attached electronic water meters for volume initiated regeneration, flow display, and totalization.

• Twin alternating configurations with remote water meter (mechanical or electronic) and electro-mechanical controller for continuous soft water supply.

• 'MX' Electronic programmable cycle controllers for systems up to 3 softener tanks. Flexible system control for almost any configuration using timer or volume initiated regeneration. "Additive Flow Feature" for automatically bringing additional tanks on-line as service flow increases.

• Skid mounted, pre-piped, and pre-wired systems (for single or multiple softeners).

MAT SERIES - Designed for commercial and industrial applications demanding continuous soft water supply. All systems are twin-alternating configurations with one tank in regeneration or stand-by at all times. Individual tank capacity ranges from 15,000 grain to 450,000 grain with continuous flow rates of 1-45 GPM. Tank diameters up to 30" and service pipe connections up to 1.5" NPT are available.

Features/Benefits

• Fiberglass reinforced polyester (FRP) pressure vessels for 150 psi working pressure.

• High capacity, sulfonated polystyrene cation exchange resin in sodium-form.

• Brass, top mounted twin-tank control valve with integral brine injector.

• Built-In control valve alternator for continuous soft water supply.

• Automatic-reset water meter for volume initiated regeneration.

• Self-adjusting flow control to maintain accurate backwash rates.

• Internal distribution system for minimal pressure drop and optimal regeneration.

• Rigid, polyethylene brine tanks with dry-salt shelf platform and water re-fill valves.

Optional Equipment

• Electronic water meter upgrade for volume initiated regeneration, flow display, and totalization.

• Skid mounted, pre-assembled, and pre-loaded systems.

MR SERIES - Designed for larger commercial and industrial applications. Individual tank capacity ranges from 150,000 grain to 1,050,000 grain with continuous flow rates of 20-190 GPM. Tank diameters up to 42" and service pipe connections up to 3" NPT are available. Single tank, multi-tank parallel, twin alternating, and triple alternating systems are available with a wide variety of timer and water meter controllers.

Features/Benefits

• Epoxy lined and prime exterior finished carbon steel pressure vessels. Non-ASME construction with 100 psig working pressure.

• High capacity, sulfonated polystyrene cation exchange resin in sodium-form.

• Galvanized steel face-piping assembly with cast iron, normally-open, "Y" pattern diaphragm control valves.

• Pilot stager valve controller for automatic regeneration operation. Pre-wired in a NEMA-12 enclosure with an adjustable timeclock for regeneration initiation.

• Self-adjusting flow control to maintain accurate backwash rates.

• PVC pressure-compensated brine injector for correct brine flow and concentration.

• PVC media-retaining underdrain distribution system in either hub-radial or header-lateral configurations for minimal pressure drop and proper regeneration.

• Rigid, polyethylene brine tanks with dry-salt shelf platform and water re-fill valves.

Optional Equipment

• ASME constructed, stamped, and certified pressure vessels for varying working pressures.

• "Safety Blue" finish painted vessel exteriors.

• Mechanical automatic-reset water meters for volume initiated regeneration.

• Electronic water meters for volume initiated regeneration, flow display, and totalization.

• Twin alternating configurations with remote water meter (mechanical or electronic) and electro-mechanical controller for continuous soft water supply.

• 'MX' Electronic programmable cycle controllers for systems up to 3 softener tanks. Flexible system control for almost any configuration using timer or volume initiated regeneration. "Additive Flow Feature" for automatically bringing additional tanks on-line as service flow increases.

• Inlet/outlet pressure gauges and sample valves.

• Sch 80 PVC face-piping and thermo-plastic diaphragm valves.

• Manual system valves for operator-performed regeneration cycle.

• Programmable Logic Control (PLC) electrical packages.

• High temperature constructed and condensate polisher designs.

• Skid mounted, pre-piped, and pre-wired systems (for single/multiple softeners).

• 'SRS' Salt Recycler System for 25% less salt consumption without loss in treated water quality. Requires additional control valves, enhanced stager controller, and modified brine tank.

MHC SERIES - Designed for large industrial applications. Individual tank capacity ranges from 1,200,000 grain to 5,400,000 grain with continuous flow rates of 100-1,150 GPM. Tank diameters from 48" to 96" and service pipe connections from 3" NPT to 8" flange are available. Single tank, multi-tank parallel, twin alternating, and triple alternating systems are available with a wide variety of timer and water meter controllers. Contact Marlo, Inc. for information on larger tank sizes and custom sized applications.

Features/Benefits

• Epoxy lined and prime exterior finished carbon steel pressure vessels. Non-ASME construction with 100 psig working pressure.

• High capacity, sulfonated polystyrene cation exchange resin in sodium-form.

• Galvanized steel face-piping assembly with cast iron, normally-open, "Y" pattern diaphragm control valves. Filters with service piping 6" and larger utilize flanged carbon steel face-piping and double-acting butterfly service control valves.

• Pilot stager valve controller for automatic regeneration operation. Pre-wired in a NEMA-12 enclosure with an adjustable timeclock for regeneration initiation.

• Self-adjusting flow control to maintain accurate backwash rates.

• Pressure-compensated brine injector for correct brine flow and concentration.

• PVC media-retaining underdrain distribution system in either hub-radial or header-lateral configurations for minimal pressure drop and proper regeneration.

• Rigid, polyethylene or FRP brine tanks with wet-salt storage and water re-fill valves.

Optional Equipment

• ASME constructed, stamped, and certified pressure vessels for varying working pressures.

• "Safety Blue" finish painted vessel exteriors. Alternative colors are available.

• Mechanical automatic-reset water meters for volume initiated regeneration.

• Electronic water meters for volume initiated regeneration, flow display, and totalization.

• Twin alternating configurations with remote water meter (mechanical or electronic) and electro-mechanical controller for continuous soft water supply.

• 'MX' Electronic programmable cycle controllers for systems up to 3 softener tanks. Flexible system control for almost any configuration using timer or volume initiated regeneration. "Additive Flow Feature" for automatically bringing additional tanks on-line as service flow increases.

• Inlet/outlet pressure gauges and sample valves.

• Sch 80 PVC face-piping and thermo-plastic diaphragm valves (2-3" service).

• Sch 80 PVC face-piping and butterfly valves (3-8" service).

• 304/316 Stainless steel pressure vessels, face-piping, and internal distributors.

• Manual system valves for operator-performed regeneration cycle.

• Bulk brine storage vessels and brine pump skid systems.

• Programmable Logic Control (PLC) electrical packages.

• Skid mounted, pre-piped, and pre-wired systems (for single/multiple softeners).

• 'SRS' Salt Recycler System for 25% less salt consumption without loss in treated water quality. Requires additional control valves, enhanced stager controller, and modified brine tank.