Duff Co. | Phila. Plumbing & Heating Supply | Pumps | Water Conditioning

Tag: Water Treatment

Duff Co. is an industry leader in water treatment, softening, filtration, and purification. We manufacture complete water treatment systems for residential, commercial, and industrial uses of all types as well as supplying parts and components such as filters and cartridges, housings, tanks and filtration media. We also offer a vast range of the most innovative and reliable valves from all the leading manufacturers, as well as RO systems and UV systems. Millions of homes and businesses have benefitted from Duff Co.’s expertise and experience and rely on us for unsurpassed technical abilities and support.

  • Specialty Filter Cartridges Remove Arsenic, PFOS and PFAS from Drinking Water

    Telling a homeowner their drinking water is contaminated with any level of arsenic or PFOS and PFOA Forever Chemicals can cause a moment of alarm, but the diagnosis isn’t without treatment options, and Duff Co. offers exceptional solutions at competitive prices.

    Arsenic Filter Cartridges

    Duff Co.’s 2.5” x 10” arsenic removal cartridge is filled with ResinTech ASM-10-HP premium arsenic removal resin.

    It fits standard style sumps and is effective over the entire pH range of potable water.

    It is ideal for point-of-use applications requiring EPA compliance of less than 10 ppb of arsenic.

    Made in the USA!

    Aries Filter Cartridges

    Reduce PFOS & PFOA “forever chemicals” in drinking water with Aries filters.

    The oversized cartridge allows for maximum media capacity while still fitting standard residential and industrial sized housings. Also removes other Per and Poly fluorinated compounds.

    Made in the USA!

    Download the spec sheet

    PFOA/PFOS Removal Systems

    Duff Co. is also pleased to announce that the existing Freshpoint Reverse Osmosis system has received certification by IAPMO R&T for reducing up to 98% of PFOA/PFOS, commonly known as “forever chemicals.”

    Three of Pentair’s Freshpoint products have received this designation: The Freshpoint F2000-B2B Two Stage, the Freshpoint F3000-B2B Three Stage Filtration Systems and the Freshpoint GRO-575B Five Stage Reverse Osmosis System.

    These products still feature the same effortless click-in cartridge change-outs and color-coded cartridges customers love to help maintain the proper filter sequence.

    Download the Freshpoint RO System Brochure

    If you have questions or which to receive a quote for arsenic filter cartridges, Aries cartridges, or any Freshpoint RO system, contact us today!

  • GDS Germicidal Disinfection Sterilizer UV Systems

    Germicidal Disinfection Sterilizer UV Systems are effective methods for providing safe, bacteria free water for your residential or office needs. GDS UV Sterilizer systems remove microbiological contaminants without the use of expensive chemicals that require maintenance, and they destroy bacteria, viruses, and other organisms, storing them safely inside a factory-sealed stainless steel chamber. They’re American-made, too.

    GDS-8, GDS-12, GDS-20 UV System Features

    • LED Visual & Audible Alarms
    • 30 Day Replacement Alarm & Countdown Timer
    • Lamp Life Expired Alarm
    • UV Lamp Out Alarm
    • 365 Day Resettable Lamp Life Counter
    • Flow Control
    • Solenoid Valve Connection
    • Sight Port
    • Built-in Surge Protector and Fuse
    • 1″ and 3/4″ Standard Inlet and Outlet
    • Standard Warranty

    GDS-7, GDS-15 Germicidal Disinfection Sterilizer UV Systems Features

    • LED Visual & Audible Alarms
    • 30 Day Replacement Alarm & Countdown Timer
    • Lamp Life Expired Alarm
    • UV Lamp Out Alarm
    • 365 Day Resettable Lamp Life Counter
    • Flow Control
    • Solenoid Valve Connection
    • Sight Port
    • Built-in Surge Protector and Fuse
    • 1″ and 3/4″ Standard Inlet and Outlet
    • Standard Warranty

    GDS-25 UV Sterilizer UV System Features

    • LED Visual & Audible Alarms
    • Monthly Countdown Timer
    • 30 Day Replacement Alarm
    • UV Lamp Out Alarm
    • Flow Control
    • Solenoid Valve Connection
    • Sight Port
    • Built-in Surge Protector
    • Replacable 3 amp Fuse
    • 1″ and 3/4″ Female Standard Inlet/Outlet
    • 304 Stainless Steel
    • Standard Warranty

    Optional solenoids are available that work as a fail safe shut-off valve. Ask your Duff Co. Representative for more information.

    An optional 254M UV dosage metering device is available for some models.

    Click here to download the brochure

  • Fleck Puller and Stuffer Tools

    Fleck puller and stuffer tools make replacing seals and spacers a snap. These genuine Fleck parts are designed to save time when replacing seals and spacers in Fleck Valve heads. Be sure to reference the valve part number when ordering your tools to ensure compatibility.

    Fleck Puller and Stuffer shown against a white background.
    Fleck Puller and Stuffer Tools

    Fleck Pullers

    Part NumberDescription
    61669Puller 2850 9500
    36441Puller 2900 3150
    27880Puller 2510 2750
    71599Hook, Seal

    Fleck Stuffer Tool Assemblies

    Part NumberDescription
    27855Stuffer Tool 1500, 2510, 2750, 2900 Upper
    36458Stuffer Tool 2900 Lower, 3150, 3900 Upper
    36746Stuffer Tool 5000, 5600, 6700, 9000, 9100
    36426Stuffer 2850/9500

    Fleck Piston Assemblies

    A variety of piston assemblies specifically designed for each valve are available, including conversion kits for hard water and no hard water bypass, and for systems with separate source regeneration.

    Ask your Duff Co. Representative for details regarding piston assemblies to meet your requirements.

    Click here to download the brochure.

  • Water Treatment Test Kits

    An essential tool for the water treatment professional, water treatment test kits help you get the job done.

    Deluxe Water Test Kit

    The Deluxe Water Treatment Test Kit offers five testing solutions for: Hardness, Iron, pH, Chlorine and TDS. Includes TDS Meter with case. P/N .57407

    Deluxe Water Treatment Test Kit shown with its hard plastic case, chemical bottles, test strips, and instructions.

    Total Hardness Test Kit

    The Standard Water Test Kit tests for
    Hardness, Iron, and pH. P/N .57417

    The Standard Water Treatment Test Kit shown with its hard plastic case, chemical bottles, test strips, and instructions.

    Chlorine Test Strips

    A convenient way to test for total chlorine. Tests for low range levels with a range and sensitivity of 0, 0.25, 0.5, 1.3, and 10 ppm. Quantity of 25. P/N .87732

    A white, plastic container that contains chlorine test strips for use in water treatment testing.

    Other popular specialized test kits include:

    • Alkalinity
    • Arsenic
    • Chloride
    • Chlorine
    • Dissolved Oxygen
    • Hardness
    • Hydrogen Peroxide
    • Hydrogen Sulfide
    • Nitrogen
    • pH
    • Phosphorous
    • Silica
    • Manganese
    • Iron
    • Coliform
    • Copper
    Part NumberProduct Description
    .57407Deluxe Water Test Kit
    .57417Standard Water Test Kit
    .87732Chlorine Test Strips
    .31103Hardness Test Kit
    .35406Hardness Test Strips
    .38977Hardness / Iron Test Kit
    .27798Soap Test Kit
    .65943Copper Test Kit
    .87160Iron Test Kit
    .79351Nitrate Test Kit
    .87145pH Test Kit
    .52503ColorQ Pro-7 Plus Pool Test

    Click here to download the flyer

  • PFOS and PFAS Reduction Cartridges and Filtration Media

    “Forever chemicals” derive from a variety of industrial and manufacturing operations related to non-stick and stain resistant coatings, fireworks and munitions, and other applications. PFOS and PFAS can appear in potable water by leeching into groundwater and through other means. PFOS and PFAS filtration and removal can be achieved through a variety of Ion Exchange and other resins, including these two products, both made in Camden, NJ.

    PFAS and PFOS Filtration Recommended Uses:

    • Residential Drinking Water
    • Commercial
    • Industrial
    • Point-of-Entry (POE)
    • Private Wells
    • Groundwater

    Perchlorate (PFAS) Reduction Filters

    PFAS Perchlorate Reduction Filters and filter housings

    Highest-capacity perchlorate removal
    filters featuring Resintech® SIR-110-HP.

    Fits standard residential & industrial size
    housings (10 and 20 inches).

    Oversize cartridges available for maximum media.

    SIR110HP Filtration Media

    SIR110HP Filtration Media to remove PFOS and PFAS forever chemicals from drinking water

    Chloride form perchlorate, nitrate, and PFAS selective gel strong base anion resin.

    Gold Seal Certified by the WQA for potable water applications.

    Recommended for removal of perchlorate, nitrate, iodide, pertechnetate, and most PFAS compounds.

    Click here to download the flyer and spec sheets

  • Lead Reduction Filter Kit

    Filter out lead, VOCs, chlorine, bad taste and odor from your drinking water. Great for kitchens, water fountains, vending equipment, and more! Cost-effective and easy to install. Cartridges should be changed every three months (estimated), depending on water quality and usage.

    Lead Filter Kit image. Kit includes cartridge, housing, wall bracket and wrench.

    Specifications:

    • .5 Micron Rating
    • Dimensions: 2 7/8” x 9 ¾”
    • Capacity Based on Contaminant (see below)
    • Temp Range: 40-165F
    • Flow Rate: 0.5 – 1 GPM
    • NSF Standard 42 Tested and Certified
    • Removes chlorine taste & odor, cysts, lead, VOC, MTBE and extra fine sediment
    • Removes 99.95% of Cryptosporidium and Giardia Cysts

    Capacity for Removal Per Contaminant:

    • Chlorine Taste & Odor 20,000 Gallons
    • VOC & Cysts 600 Gallons
    • MTBE 500 Gallon

    What’s Included:

    • 2.5” x 10” replaceable advanced multi-media cartridge
    • Clear housing (¾” FIP connections)
    • Wall bracket
    • Wrench
    Click here to download the brochure

  • Ceramic Core Ball Valves

    Precisely constructed ball valve for heavy commercial use.

    Introducing New Ceramic Core Ball Valves! These valves have a self-balancing design that creates very low torque while operating. These hermetically-sealed valves have extremely high corrosion, abrasion, and chemical resistance to stand up to the toughest water treatment challenges.

    Ceramic Ball Valves Image

    The ball cores and seats are precisely ground in pair to ensure zero leakage. They come in various drive styles including manual, pneumatic, and electronic. Constructed with durable materials, they meet the most demanding requirements.

    Connections can be configured for threads, flanges, UPVC and more.

    They are ideal for water saving systems, industrial automatic control systems, automatic sewage systems, environmental protection projects, water supply and drainage, food and water treatment, and irrigation systems.

    Ceramic Core Ball Valve Features:
    • Low torque operation
    • High corrosion, abrasion, and chemical resistance
    • Precisely fitted ball cores and seats
    • Various materials and connection options
    • Lifetime guarantee on ceramic internals

    Ceramic Ball Valve Parts: NPT Male, UPVC Glue, Metric Female, and Flange

    Plastic Ceramic Core Ball Valves

    TypeConnectionSizes
    ManualNPT Male Thread3/4”, 1”, 1.25”, 1.5”, 2”
    ManualUPVC Glue1/2”, 3/4”, 1”, 1.25”, 1.5”, 2”
    ManualMetric Female Thread15, 20, 25, 32, 40, 50, “mm”
    Manual3-Way NPT Male1”, 1.25”, 1.5”, 2”
    Manual3-Way UPVC Glue1”, 1.25”, 1.5”, 2”
    TypeConnectionSizes
    ElectronicNPT Male Thread3/4”, 1”, 1.25”, 1.5”, 2”
    ElectronicUPVC Glue1/2”, 3/4”, 1”, 1.25”, 1.5”, 2”
    ElectronicMetric Female Thread15, 20, 25, 32, 40, 50, “mm”
    Electronic3-Way NPT Male1”, 1.25”, 1.5”, 2”
    Electronic3-Way UPVC Glue1”, 1.25”, 1.5”, 2”

    Metal Ceramic Core Ball Valves

    TypeConnectionSizes
    ManualFemale NPT Thread1/2”, 3/4”, 1”, 1.25”, 1.5”, 2”
    ManualFlange1/2”, 3/4”, 1”, 1.25”, 1.5”, 2”
    ElectronicFemale NPT Thread1/2”, 3/4”, 1”, 1.25”, 1.5”, 2”
    ElectronicFlange1/2”, 3/4”, 1”, 1.25”, 1.5”, 2”
    PneumaticFlange1/2”, 3/4”, 1”, 1.25”, 1.5”, 2”
    Click here to download the brochure

  • Introducing ResinTech CNS, Made-in-the-USA Softening Resin

    ResinTech CNS is a solvent-free, premium black softening resin. It is a sodium form, strong acid cation resin. CNS has standard cross-linkage, optimized for residential and commercial applications. This type of resin is easier to regenerate than the higher crosslinked resins. It has marginal resistance to chlorine and other oxidants and is not ideal for high temperature and other high stress applications. This product is made right in our backyard, in Camden, NJ.

    CNS Resin is a dark brown / black filtration media.

    CNS is Gold Seal Certified by the WQA for potable water applications. It is intended for residential and commercial water softening of waters that do not contain significant chlorine residual and where potable water certification is required. CNS is setting a new standard for water softening resin.

    Data about the CNS Resin for water softening.

    Available in 1 cubic foot bags, boxes and drums, 7 cubic foot drums and 42 cubic foot super sacks.

    Download the CNS Media Spec Sheet

    ABOUT RESINTECH

    Not only is CNS made in the USA, it’s locally produced in the brand-new ResinTech facility in Camden, NJ.

    ResinTech's 360,000 sf facility in Camden NJ

    After years as a chemical engineer and recognized expert in ion exchange for water treatment, Michael Gottlieb started ResinTech in the basement of his New Jersey home. Three decades later, the company has expanded to include offsite resin regeneration, closed-loop wastewater treatment solutions, RO membrane restoration, resin and water analysis, and Aries Filterworks, which manufactures cartridges and lab water systems with ResinTech premium media.

    In 2020, ResinTech opened its LEED® Silver certified global headquarters in Camden. The 360,000sf facility, which employs 040 workers, is the first new ion exchange factory in America in the last thirty years.

  • Introducing Manual Multiport Filter Valves

    This manual multiport filter valve features a flow rate of 17.6 gpm and utilizes a corrosion resistant gasket for opening and closing functions.


    It can be used as a service, backwash, and fast rinse valve, even under pressure. With a handle, you can switch the settings easily without turning off the pump or the power. When selecting a valve setting, make sure to always depress the handle before turning.

    ModelF56A1-A2 (51104/51204)
    Handle MaterialMetal / Plastic
    Mount TypeTop Mount
    Inlet / Outlet1″ F
    Drain1″ F
    Mounting Base2.5″ -8NPSM
    Riser Pipe1.05″ OD
    Flow Rate17.6GPM
    Filter Tank6″ – 12″
    Water PressureUp to 87 psi
    Water Turbidity41-122°F
    Application<20FTU
    Filter MediaActivated Carbon Filter, Sand Filter
    Click here to download the flyer

  • New! Fleck 125 In-and-Out Valve

    Fleck 125 In-and-Out Valve

    Simple And Reliable Water Transfer

    The Pentair® Fleck® 125 In-and-Out Valve is the ideal choice for water treatment professionals who require simple and reliable water transfer to and from water pressure vessels. With its straightforward design and rugged engineering, this valve is not only versatile and easy-to-use, but will hold up to the rigors of high flow rates over time.

    Insist on the Fleck 125 In-and-Out Valve as your valve of choice for applications utilizing upflow, downflow, carbon filtration, deionization exchange, and more.

    New Fleck 125 In-and-Out Valve heads shown with and without bypass.
    621134 fleck 125 in and out valve front

    ACCOMMODATES MOST TANK SIZES

    • Available in both 2.5” and 4” base size
    • Compatible with most pressure tanks up to 24”.
    • One-piece design eliminates the need for a reducer.

    REDUCED LEAK POINTS

    • Two 1/4” pre-tapped and threaded ports
    • Design allows for addition of differential pressure gauges.

    BUILT TO INTEGRATE

    • Accommodates multiple plumbing connections
    • Inlet and outlet ports connect to a common bypass and an assortment of 3/4” to 1-1/2” plumbing connections fitting multiple applications.
    • 90-degree adaptors available for use in tight spaces (sold separately).

    FASTER INSTALLATION

    • Top-mounted hex head
    • Install the Fleck 125 In-and–Out Valve in a fraction of the time with its uniquely designed top-mounted hex nut.
    Product #DescriptionBase SizeDownflow Rate (continuous)Dowflow CVUpflow Rate (continuous) Upflow CV
    62134-01 Fleck 125 In-and-Out Valve 2.5″54.5 gpm 14.148.5 gpm 12.6
    62134-02 Fleck 125 In-and-Out Valve 4.0″61.3 gpm15.862.8 gpm16.2
    Click here to download the flyer