PROUDLY SERVING THE NORTHEAST FOR 80 YEARS
Duff Company was founded in 1947 by Richard “Dick” Duffine. Today, Duff Co. is run by Dick’s son Geoff, and grandson Alex, along with Geoff’s son-in-law, Michael Genkin. Together, The Duff Co. family is dedicated to growing its services while maintaining the superior level of quality that has become its hallmark.
We offer the widest product selection around – from plumbing, heating and industrial supplies to pumps, steam specialties, multi-family housing supplies, water treatment equipment, and more. With a staff of more than fifty and an average tenure of more than 20 years, we are truly a family company, and we look forward to many more years serving Norristown and beyond.
Our Customers Include
- Healthcare & Hospitals
- Schools & Universities
- Municipalities & Government Facilities
- Correctional Facilities
- Commercial Buildings
- Hotels & Casinos
- Apartments & Dormitories
- Well Drillers & Pump Service
- Water Treatment Dealers
- OEMs
- Resellers
- Maintenance Teams
- Facilities Departments
- Nursing Homes & Retirement Communities
Duff Co. Named Pennsylvania Apartment Association Member of The Year
Duff Co. Multi-Family Solutions is a proud recipient of the Supplier Member of the Year award by the Pennsylvania Apartment Association. We are pleased to offer maintenance and renovation solutions to apartment owners and managers throughout the Philadelphia region and beyond.
Duff Co. is a Pentek Exclusive Master Distributor
For more than a generation, we have been on the cutting edge of water treatment solutions, and since 2018, we have served as the exclusive Master Distributor for the complete line of Pentek filtration products and Autotrol valves and components. Whether you manage water filtration for oil and gas or power industries, or for chemical plants, paints and coatings, pharmaceutical, or the food and beverage industry, we have everything you need – all made in the USA.
Read more by exploring our Pentek filtration products and Autotrol valves.
Duff Insights
Stay Updated with the Latest News
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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 —…
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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…
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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…
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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…
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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…
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Stenner Chemical Metering Pumps
Stenner Fixed Output Pumps Stenner Fixed Output Pumps inject solution at a fixed rate. They are used for pH control,…
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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…
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Acid Washed Carbon Sale!
The secret is out! Clean and dust free, the best in Acid Washed Carbon is now available. Acid Washed Carbon…
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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…
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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…
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Split Tank Water Treatment System
High Efficiency in a space-saving design. The split tank system is a carbon filter / water softener combo that produces…
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FloodStop® Water Heater Kit
Prioritize Safety & Help Protect Against Water Damage Protect property from water damage with FloodStop®. When a leak is detected,…