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The Peterson Fluid Systems R4 fitting plug is a CNC‑machined, anodized plug designed for R4 plumbing systems, featuring a shallow‑depth screw‑in design that reduces installed profile and weight. It’s produced to the brand’s machining standards for durability and fit, making it a direct choice when closing unused ports in R4 pump and plumbing assemblies.
Peterson Fluid Systems Fitting Plug R4
