Blog

  • Meet the Fleck 2510 AiQ Valve

    The Pentair Fleck 2510 Advanced-iQ (AiQ) Powerhead sets a new industry benchmark with its modern design and innovative features — leaving traditional valves behind. Experience effortless installation and setup with the intuitive controller interface, ensuring simple and efficient programming whether on-board or via USB port. Maintenance has never been easier, thanks to the modular design that reduces powerhead teardown steps, saving you time and effort.

    Compatible with:

    Fleck 2510 NXT2 Valve

    Fleck 2510 SXT

    Fleck 2510 Electromechanical Softener Meter

    Fleck 2510 Electromechanical Filter Time Clock

    Fleck 2510 AiQ Valve Features and Benefits

    • Lightweight and compact — The AiQ is easier to ship, store, and handle in the warehouse and in the field.
    • Modular powerhead design — Install and teardown in four simple steps, saving time in cramped workspaces.
    • Backplate hook — Hang the cover right on the backplate to keep it safe and secure while working in crowded areas.
    • Easy grip handle — Less chance of dropping and damage.
    • Full-color display with quick start menu — Easy to read and fast to configure!
    • Benchtop programming — No more hunching and squinting in the field. Program the AiQ before installation using just the cover.
    • Intuitive menu structure — Precise terminology instead of complicated jargon. Logical navigation makes programming a breeze.
    • Repetitive programming — Program multiple valves with pre-defined configurations or water-specific profiles using simple Excel files!
    • Field-updateable controller — Keep systems current without replacing any hardware.
    • Modern, functional design with enhanced visibility — Easy-to-see indicator with multi-angle wrap-around light bar.
    • Customizable support information via USB-C — Add your logo and contact info to the display.
    • Meets environmental ratings (NEMA3R/IP54) — Reliable performance in harsh environments, outdoors or wet conditions.

  • Register Early for the 2025 Pump and Water Treatment Seminar and Save!

    The 2025 Pump & Water Treatment Seminar will be held on May 7, 2025 at the Holiday Inn in East Windsor, NJ. You can save $80 by completing your registration before April 24, 2025. With at least 7.0 continuing education units and access to some of the leading pump and water treatment professionals, the Duff Co. Water Treatment Seminar is one of the best investments you can make this year.

    The Duff Co Spring Pump and Water Treatment Seminar, 2022.
    The Duff Co Spring Pump and Water Treatment Seminar, 2022.

    Registration includes breakfast, lunch, and snacks. Earn at least 7.0 continuing education credits from the WQA & New Jersey, Maryland, and Delaware. The full course description and a downloadable PDF of the schedule are below. Classes will cover high-level topics such as:

    • Grundfos – Drives
    • Hankscraft – Advance Ceramics
    • Amtrol – Pressure Tanks
    • Clack – Tank Cartridge Filtration
    • Pentair – Commercial & Residential Valve Sizing
    • ResinTech – Nitrate, Arsenic, & PFAs

    Courses hosted by Amtrol, Clack, Grundfos, ResinTech Inc., Hankscraft Inc., and Pentair.


    Pump and Water Treatment Seminar Event Registration

    Capacity is limited. Register early and save!

    $245 per person until April 24, 2025. ($325 regular per-person pricing.)


    Hotel Discount Block

    A limited number of rooms have been blocked at the Holiday Inn at 399 Monmouth Street., East Windsor, NJ.

    If you have trouble booking a room using the button below, you can place your reservation manually. Our group code is DFC.

    • Go to IHG.com
    • Scroll down the page and find the Reservation Bar
    • Fill out the necessary nights and number of rooms and people for your specific reservation (5/6 to 5/7 – one night). PLEASE NOTE: This only works for our group block’s agreed dates to stay. Please make sure you input the correct dates.
    • Under “Rate Preference”, please change “Best Available Rate” to “Group Rate”
    • Enter your group code: DFC
    • Select view prices

    Water Treatment Seminar Course Schedule


    Full Course Descriptions

    How Well Tank Sizing Can Maximize System Performance

    Presented by Steve Winkelstein, Amtrol

    Learn how smart well tank sizing strategies can help you maintain optimal water pressure, extend the life of pumps, and provide a crucial water buffer. Presented by one of the hidden gems of our industry. 

    Nitrate and Arsenic Selective Resins

    Presented by Stephen Wheeler, ResinTech

    Explore cutting-edge ion exchange resins designed to target and remove nitrate and arsenic for safer, cleaner water. This class is guaranteed to open your mind and is presented by one the brightest leaders in the field!

    Tackling the Toughest Contaminants: PFAS /PFOS Remediation & Treatment Methods

    Presented by Stephen Wheeler, ResinTech

    It seems the news and suggested treatment methods are constantly changing on this topic. Get up to speed on the latest technologies and methods to effectively address “forever chemicals” in water systems. This interactive session will give you what you need to know to address the most common questions.

    Master Chemical Dosing in Water Treatment

    Joleen Sayegh and DJ Hutchinson, Grundfos

    Understand the role of dosing pumps and how to calibrate and maintain them for efficient water treatment operations. More than anything, this session takes the mystery out of chemical pumps–and let’s you offer them as a QUICK & EASY tool in your toolbox.

    Cartridge Tanks & Filters Overview

    Ty Sherman, Clack

    Learn the benefits of cartridge tank systems, including how to choose and maintain the right filters for any application–and about why they may just be the easiest treatment method yet!

    Commercial Valves Training: Solutions for Scale

    Dave Emmens, Pentair

    Hands-on insight into selecting, installing, and troubleshooting valves for larger water systems and commercial applications. This lively session will leave you with confidence to tackle almost any job. At the very least, you’ll come away knowing all the right questions to ask.

    Residential Valve Essentials: Boost System Performance at Home

    Dave Emmens, Pentair

    Unlock the secrets to smarter water flow in residential systems. From installation tips to troubleshooting tricks, this session gives you the tools to optimize efficiency and ensure long-term reliability in any home setup. Side benefit: You’ll be able to sell more after attending!

  • The Grundfos CME horizontal multi-stage pump

    A compact, reliable and quiet pump solution that pumps up to 8.4 hp.

    This horizontal multi-stage pump from Grundfos is a compact, reliable and quiet pump solution. It features a reduced footprint with high performance. Advanced processes and technologies in the design give the CM/CME pump a dimensional advantage.

    The robust design ensures secure clamping of the pump impellers via a Nordlock© washer. And the pump is engineered to prevent the shaft seal sticking that is common with SIC-SIC seal faces through the implementation of a rotation stop on the stationary ring and a different surface finishing on the stationary and rotating rings.

    Ideal for:

    • Irrigation
    • Washing & cleaning
    • Temperature control
    • Water treatment
    • Chemical and Pharmaceutical industries
    • Building services

    The CME pump

    The CME pump features an integrated variable frequency drive and PLC which provides a wide range of unique benefits:

    • The functionalities are designed for specific pump applications
    • Wide range of control parameters
    • Energy consumption reduced by up to half compared to fixed speed pumps
    • The pump, motor and VFD is a compact system manufactured by Grundfos
    • Reduced installation and wiring costs
    • Easy installation

    The CME Plus Pump

    • Constant pressure control
    • “Plug and pump” technology
    • Includes pressure sensor, preprogrammed for operation
    • The only set up required at commissioning is to adjust the setpoint pressure.

    CME Pump Features:

    • Filling plug – sealed by o-ring for easy maintenance
    • Rotation Indicator – Quickly check if 3-phase electrical connection is correct. Indicator shows black if correct, white if incorrect.
    • Nordlock© Washer – Ensures secure clamping of pump impellers and provides quick and easy assembly and disassembly
    • Mechanical o-ring shaft seal – Offers superior dry running capabilities and reduced sticking problems
    • Encapsulated sleeve o-ring – Design retains o-ring when temperature changes cause expansion and contraction
    • Labrynth Seal – Provides protection for motor bearings and reduces maintenance.
    • DIN, ANSI & JIS Flange Adapter
    • Tri-Clamp and Victaulic Coupling Adapters
  • Versatile E-pumps Functionality with Grundfos CUE

    Wall-mounted solutions for speed-controlled pumps

    The Grundfos CUE is the newest addition to their line of speed-controlled pump systems for industry, building services, municipal water supply, municipal wastewater, and irrigation applications. The CUE offers E-pump functionality and user interface for pumps above 30 hp, as well as for power supplies outside their E-pump program.

    VERSATILE RANGE & APPLICATIONS

    • Suitable for most centrifugal pump types and all application areas.
    • Compatible with new and existing Grundfos pumps and most ranges outside of E-pumps
    • Can be used where integrated solutions will not fit, is not wanted or is prohibited such as:
    • Submersible installations
    • Wastewater applications
    • Water supply and irrigation applications
    • Hazardous or explosive areas
    • Sanitary installations

    EASY INSTALLATION

    Simply designate a few application-specific settings and variables such as pump family, control functions, sensor type, and setpoint, and the CUE automatically sets necessary parameters such as ramp times, minimum speed, controller constants, and more. The optional Grundfos R100 Remote Control helps complete the task in just minutes.

    • Plug-and-pump installation and operation
    • Extensive control and monitoring possibilities
    • The same user-interface and functionality of the E-pumps, plus an advanced controller and a number of monitoring functions
    • Extensive possibilities for monitoring, frequency converter, and surroundings – as well as remote control and supervision via bus interface and input/outputs

    EFFICIENCY & SUSTAINABILITY

    Achieve energy savings of up to 50% while increasing comfort and convenience for both installers and end users!

    Approximately 70% of the total costs incurred during the life of a variable-speed pump is attributed to power consumption. By controlling pump speed according to demand, the Grundfos CUE helps users reduce CO2 emissions and save energy.

    COMPARE

    E-solution versus fixed-speed solution in a typical pump application with variable pumping demand*:

    • Annual Energy Savings: Up to 50% (typically 25-35%)
    • Annual Reduction in CO2 Emissions: Typically 2,150 lbs. per 5 hp
    • Reduction in Life Cycle Costs: Typically 25%
    • Payback Time for the Extra Investment in an E-solution: 2 to 3 years

    *Figures are based on a pump with a 5 hp motor in an application running 12 hours per day, 220 days per year. Average CO2 per kWh is set to 0.82 lb. Life cycle cost calculation is based on a 10-year period.

    FEATURES AT-A-GLANCE

    • Plug-and-pump convenience with easy installation and commissioning.
    • Soft start and stop feature that eliminates water hammering.
    • Built-in PID controller offers constant pressure independent of the required flow.
    • More than 100 configuration possibilities, encompassing a power range from 0.75 hp to 300 hp.
    • Available with five different power supplies, two enclosure classes, and more than 24 different output powers.
    • Automatic detection and setting of correct rotation direction to ensure that the pump is running in the proper direction, eliminating the need for manual interchange of motor wires.
    • User-friendly operating panel with backlit graphical display and buttons
    • Menu settings structured identical to the R100 Remote Control operating panel used in conjunction with E-pumps.
    • User friendly functions for proportional pressure, stop function, dry-running protection, duty/standby, and motor bearings supervision.
  • Pulsafeeder and Chem-Tech 100-Series Chemical Metering Pumps

    A-Plus

    The Pulsatron Series A Plus offers manual function controls of stroke length and stroke rate standard, with the option to select external pace for automatic control. Other optional features include external stop function and 2000:1 turndown control. Ten distinct models are available.

    • Manual control by onboard adjustable stroke rate and stroke length knobs
    • Highly reliable timing circuit
    • Solenoid protection by thermal overload with auto-reset
    • Water resistant for outdoor and indoor applications
    • Internally dampened to reduce noise
    • Guided ball check valve systems to reduce back flow and enhance outstanding priming characteristics
    • Few moving parts
    • Wall mountable
    • Safe and easy priming with durable leak-free bleed valve assembly (standard)


    E-Plus

    The Pulsation Series E Plus offers manual control over stroke length and stroke rate standard with the option to choose between 4-20mA and external pace inputs for automatic control. Twenty distinct models are available.

    • Safe and easy priming with durable leak-free bleed valve assembly (standard)
    • Automatic control available with 4-20mADC direct or external pacing with stop function
    • Manual control by on-line adjustable stroke rate and stroke length
    • Auto-Off-manual switch
    • Highly reliable timing circuit
    • Panel mounted fuse
    • Solenoid protection by thermal overload with auto-reset
    • Water resistant for outdoor and indoor applications
    • Indicator lights panel mounted
    • Guided ball check valve systems to reduce back flow and enhance outstanding priming characteristics

    Pulsafeeder Chem-Tech 100-Series

    Chem-Tech Series 100/150 pumps with motorized-diaphragm technology deliver dependable performance and extended longevity. Provides quiet, consistent metering over long periods of time in a compact form. Ideal for applications where economical, consistent performance is required. Capable of a wide range of flows, from less than 3 gpd (0.47 lph) up to 30 gpd (4.72 lph) and pressures up to 100 psi (7 bar). Offered in 115v and 230v options.

    • Guided quad check valve system
    • Bleed valve assembly standard
    • Feed rate control
    • Duplex Models – Both series are configurable for dosing two chemicals at different rates
  • Stenner Chemical Metering Pumps

    Stenner Fixed Output Pumps

    Stenner Fixed Output Pumps inject solution at a fixed rate. They are used for pH control, oxidation, corrosion and scale control, for proportional dosing applications for drinking water disinfection, and used in conjunction with a controller for swimming pool sanitation. Stenner’s Fixed Output Pumps conform with ANSI/NSF standard 50 when used with ANSI/NSF 50 listed controllers.

    The Double Head Pump can inject two compatible liquids at the same ratio. As such, it’s commonly used on large commercial swimming pools, wastewater and water treatment plants. It runs at a 100% fixed flow rate output and can be installed to an ORP type controller to manage output.


    Stenner Adjustable Output Pumps

    Stenner Adjustable Output Pumps are designed for injecting solutions for pH control, to oxidize iron, manganese or hydrogen sulfide for filtration removal. They are ideal for use in water conditioning, industrial, wastewater and water treatment, in cooling towers, and irrigation, where it can be used to prevent Legionella, for disinfection, pH control, corrosion and scale control, and oxidation. Stenner’s Adjustable Output Pumps are also idea for horticultural use, in the metal finishing industry, and for commercial pool use for maintaining equipment and sanitizing swimming water.

    The Double Head Adjustable Pump features a second pump head and can inject two compatible solutions at the same ratio, for twice the output of the single head. Ideal for commercial pool and aquatic facilities, municipal wastewater and water treatment plants.


    Stenner Econ FP Pump

    The Stenner Econ FP Pump is a compact flow activated peristaltic pump for light duty applications. It can inject solutions into water or disinfect water lines with acids, chlorine dioxide, or chlorine. It is ideal for drinking water disinfection, pH adjustment in residential or farm private water wells, and in animal health applications such as poultry hatcheries.

    Three operating modes are accessible through the tamper-proof, LCD control panel: Seconds, Flow Switch, and Auxiliary and their optional percentage settings. The Wall-mountable, enclosed housing features cULus for indoor and outdoor use. Mounting accessories are available for vertical outdoor and wet environment installation.

    The Econ FP Pump operates at a set time or speed, activated by dry contact signal or 12-24 VAC/VDC. It is flow activated from a water meter, control valve, flow switch, or from other control equipment that responds to flow.

  • FloPlus Heavy Duty Filtration Cartridges

    Pentair FloPlus Cartridges boast high flow rates and low pressure drops. They offer the benefit of small particle reduction at a flow rate comparable to a 10-micron rated cartridge and are ideal for applications where extremely low pressure drops and low flow have been chronic problems in the past. Its efficiency is so high that very small particles can be removed to create cleaner, safer water. FloPlus cartridges are suitable for whole house water treatment.

    • NSF/ANSI Standard 53 certified to reduce cysts such as Cryptosporidium and Giardia by mechanical means
    • Outstanding reduction of chlorine taste and odor
    • High flow rates and low pressure drop similar to a nominal 10 micron cartridge
    • Available in 10” and 20” lengths, for standard or Big Blue housings
  • Acid Washed Carbon Sale!

    The secret is out! Clean and dust free, the best in Acid Washed Carbon is now available.

    Acid Washed Carbon is favored by the highest caliber of water treatment professionals for its for its purity and exceptional adsorption capabilities. The acid washing process enhances surface area and pore structure, significantly improving the media’s ability to adsorb contaminants.

    Acid Washed Carbon is the gold standard for chlorine and chloramine removal. It undergoes special processing and is pre-wetted to ensure it is DUST FREE—which means NO RINSE NEEDED!—and acid washing neutralizes pH and conductivity when first placed into service.

    Acid washed carbon granules spilling from a container turned on its side.
    • Gold Seal-certified
    • This Acid Washed Carbon has large pores and high capacity for large organic molecules
  • Filtering PFAS and Microplastics from Bottle Fillers

    Elkay’s 71300C Filter for PFAS, Lead, and Microplastics

    WaterSentry® PFOA/PFOS (PFAS) + Lead + Microplastics NSF/ANSI Certified Filter (Enhanced Bottle Fillers) for Elkay water coolers, drinking fountains, bottle fillers, classroom bubblers and cold water dispensers.

    Provides cleaner, healthier water for enhanced bottle filling stations. The PFAS filter is made with activated carbon to improve taste and odor, and reduce contaminants such as lead, PFOA and PFOS and Class 1 particulates. It is easy to connect and its self-contained replaceable cartridge limits exposure to contaminated media.

    • Tested and certified to NSF/ANSI standards 42 and 53 for the reduction of PFOA and PFOS; two prevalent PFAS chemicals, lead, Class 1 particulates, cysts and chlorine taste and odor.
    • Tested and certified to NSF/ANSI 401 for the reduction of microplastics.
    • Filter should be replaced every 2,250 gallons; expires 1 year after installation.
    • Equipped with quick-disconnect, 1/4-turn installation, and automatic inlet shut-off valve.

    Elkay’s 51300C Filter for Lead, and Microplastics

    WaterSentry® Lead + Microplastics NSF/ANSI Certified Filter (Bottle Fillers & Liv Pro) for Elkay water coolers, drinking fountains, bottle fillers, classroom bubblers and cold water dispensers.

    Provides cleaner, great tasting water for drinking fountains, water coolers and bottle fillers. Made with activated carbon to improve taste and odor. Elkay® filters are easy to connect and are self-contained replaceable cartridges, limiting exposure to contaminated media.

    • Filter is tested and certified to NSF 42 and 53 for lead, Class 1 particulate, chlorine taste and odor reduction.
    • Filter is tested and certified to NSF/ANSI 401 for the reduction of microplastics.
    • Also reduces odors and discoloration from incoming water.
    • Filter should be replaced every 3,000 gallons (expires 1 year after installation).
    • Equipped with quick-disconnect, 1/4-turn installation, as well as automatic inlet shut-off valve that closes when filter is removed.
  • Blue Monster Products for Sale at the Parts Counter

    Did you know that the most popular Blue Monster™ products are available at our parts counter? You can find LLFA compression seal tape, PTFE thread seal tape, and pipe thread sealant and more.

    LLFA Compression Seal Tape

    For crisis and long-term applications

    • Self-fusing layers for a waterproof, long-term compression seal
    • Stops nasty leaks under pressure without turning off the water source
    • Suitable for burial without jacketing. Non-toxic, environmentally safe.
    • Seal leaks up to 150 PSI (water, air, steam)
    • Safe for drinking water. WRAS approved.
    • Ideal for irrigation pipe repair
    • Stops and prevents corrosion
    • Effective to 500ºF / -130ºF
    • All purpose! Use on iron, brass, copper, aluminum, stainless steel, galvanized steel, polyethylene, polypropylene, PVC, CPVC, ABS and more.
    • Available in 1″ and 2″ widths and in 3-piece strip packs.

    PTFE Thread Seal Tape

    PTFE thread sealing tape for dependable, leak-proof joints

    • Compatible with a broad range of gases, liquids and piping materials
    • Will not harden or crack on joints
    • Effective across a broad range of temperatures and pressures
    • Acts as a thread lubricant and anti-seize, prevents electrolytic corrosion
    • No need for pipe dope. No curing time.
    • Non-flammable and non-toxic
    • Seals threads effectively in more applications
    • All purpose! Use on iron, brass, copper, aluminum, stainless steel, galvanized steel, polyethylene, polypropylene, PVC, CPVC, ABS, fiberglass and more.

    Industrial Grade Pipe Thread Sealant

    Heavy-duty industrial grade, available with and without PTFE

    • Seals threads on all Metals, PVC, CPVC, ABS and Nylon Plastic Pipe Systems
    • Specially formulated for production line use
    • Adheres to oily threads
    • Non-hardening
    • Non-toxic
    • Slow-Drying
    • Easy-cleanup
    • Soft-Set
    • Grit-Free