Yuken PVR50-20 (PVR50-F-F-20-RAA-3180): confirming you have the right variant:- Searching the full string PVR50-F-F-20-RAA-3180 rather than just “PVR50“ already puts you ahead of most buyers, because within this series, the displacement code — the “20“ here — is what actually determines whether a replacement pump will do the job, not the “PVR50“ prefix alone. What the “20“ in PVR50-20 refers to:- As with other codes in the PVR50 series, “20“ identifies the displacement variant within the PVR50 frame size, typically expressed in cubic centimeters per revolution. It sits in the lower-to-mid range of displacement codes seen across the series — smaller than variants like 33, 39, or 45, but larger than the 13 variant. That places it in a middle ground: suited to applications that need more flow than the smallest PVR50 variants provide, without stepping up to the larger-displacement units in the range. Why it's not interchangeable with nearby PVR50 codes:- It's tempting to treat “close enough“ displacement codes as interchangeable, especially when a supplier offers a 17 or 26 in place of a 20 because that's what's in stock. Don't accept that without checking. Each displacement code delivers a different flow rate at a given drive speed, and a mismatch either underfeeds a system that needs the full flow a 20 variant provides, or oversupplies one that doesn't need it — neither is a safe assumption to make on a working machine. If a supplier suggests a substitution, ask specifically what displacement difference that represents, not just whether it's “basically the same.“ Confirming your nameplate before ordering Before ordering, read the complete string directly off your existing pump's nameplate: the displacement code (20, not a nearby number), the mounting letters (F-F), and the trailing revision digits (3180 in this case). If the nameplate is worn or the number was passed along secondhand from an old purchase record, flag that clearly to your supplier rather than letting an assumption fill the gap — a mismatched displacement is a costlier mistake than the small string of characters suggests. Sourcing or repairing this specific variant:- If PVR50-F-F-20-RAA-3180 specifically isn't available on short notice, it's worth checking whether your existing pump can be rebuilt rather than assuming a full replacement is necessary — particularly if the housing and shaft are in good condition. Advance Hydraulic Works sources and repairs Yuken PVR series vane pumps, including PVR50-frame units across displacement variants, and can confirm the exact code your application needs before quoting. . FAQ section 1.What does the “20“ mean in Yuken PVR50-20? This is the displacement code in the PVR50 collection, sitting within the low-mid variety compared to other codes such as thirteen, 26, or 45. 2. Can the PVR50-20 be replaced by a PVR50-17 or PVR50-26? Not reliably. Different displacement codes deliver different flow rates, and a mismatch can either underfeed or oversupply the system depending on the direction of the substitution. 3.How do I confirm I need the exact “20“ variant and not a nearby code? Read the full model string off your existing pump's nameplate, matching the displacement code, mounting letters, and trailing revision digits exactly. 4.Is the PVR50-20 the normally stocked version? Availability varies by vendor; Such mid-variation displacement codes are requested more frequently than the smallest and largest variations in the series, but it's really worth confirming the inventory before assuming minor availability anyway 5.Can this pump be rebuilt against change? Usually, sure, if the housing and shaft are undamaged and the cartridge case is to match the 20 displacement. 6.What should I do if my old pump's nameplate is unclear? Tell your supplier exactly what you can and can't confirm rather than guessing. A supplier familiar with the PVR50 series can help verify the remaining details.
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