Flowmatic Systems Plumbing Parts & Accessories

Flowmatic Systems: Trusted Plumbing Parts & Accessories for RV, Marine, and Beyond

When it comes to keeping fresh water clean, flowing, and safe aboard an RV or boat, few names carry as much recognition as Flowmatic Systems. Best known for their Flow-Pur product line, Flowmatic Systems has built a reputation as a dependable single-source supplier of water filtration and plumbing accessories engineered specifically for the demands of mobile living — whether on the road or on the water.

The Flow-Pur Line: Purpose-Built Filtration Plumbing

Flowmatic Systems’ plumbing parts and accessories center on their well-regarded Flow-Pur system — a range of inline water filters, housings, fittings, and supporting hardware that connects directly to a fresh water supply using standard garden hose fittings. These in-line filters are made to connect to your fresh water supply through a garden hose on the outside of your RV or boat , making installation approachable even for first-time owners.

Flow-Pur filter cartridges are designed to reduce chlorine, sediment, unpleasant taste, odors, and VOCs, with a flow rate of 2.5 gallons per minute. For more demanding applications, Flowmatic also offers advanced media options: the KDF media in certain filters inhibits bacteria growth, chlorine, unpleasant taste and odors, and VOCs. Several cartridges are also NSF Certified , offering an added layer of assurance for those concerned about water quality standards.

A Wide Ecosystem of Compatible Parts

What makes Flowmatic Systems stand out in the plumbing accessories space is the breadth of their compatible ecosystem. Flowmatic offers everything from filter and membrane housings to automatic shut-off valves and filter cartridges. Products like the Flow-Pur Winterizing By-Pass Plate (FP-WP100), undercounter filter kits, and dual exterior filter systems mean there’s a Flowmatic solution across multiple installation scenarios — from seasonal winterization to year-round in-line filtration.

Flow-Pur water filter kits for Flowmatic systems are used in many REV Group Class A motorhomes and RVs, including American Coach, Holiday Rambler, Fleetwood, and Monaco Coach — reflecting just how deeply embedded the brand is in the OEM supply chain. The FP10GKJ Flow-Pur Replacement RV Inline Water Filter with John Guest Quick Connect Fittings fits many OEM applications , making it a go-to choice for owners replacing factory-installed systems.

Design Philosophy: Simplicity and Reliability

Flowmatic’s unique design features make installation easier and operation more reliable, and their wide selection of colors and sizes allows users to solve virtually any filtration application. This design-first thinking is evident in plumbing accessories like their housing wrench — included with many filter kits — which comes in handy when opening and closing the water filter canister. These are the kinds of thoughtful, practical touches that matter most when you’re working in a tight RV bay or on a boat deck.

Whether you’re outfitting a new rig, replacing an aging OEM filter housing, or upgrading to a higher-performance filtration setup, Flowmatic Systems plumbing parts and accessories offer a proven, field-tested solution built for life on the move.