Yuken PVR50-39 Vane Pump: Why This Displacement Needs Extra Verification:- PVR50-F-F-39-RAA-3180 sits at the very top of the PVR50 displacement range, and that position matters for a reason beyond specs. Higher-end variants like this one move slower through supplier inventory than the mid-range codes, and slower-moving stock is exactly where mislabeled or substituted parts tend to surface. Reading PVR50-F-F-39-RAA-3180:- PVR marks the series — a variable displacement, pressure-compensated vane pump. 50 is the frame size. F-F specifies shaft and port configuration. RAA covers rotation and mounting. 3180 identifies the design/revision build. What “39“ means at the top of the PVR50 range:- That number is maximum displacement, roughly 39 cm³ per revolution, effectively the ceiling for what a PVR50-frame pump is built to deliver. If your application genuinely needs more flow than this, you're typically looking at the next frame size up, not a higher number within PVR50. Why less-common displacements attract more substitution risk:- The mid-range PVR50 variants — 20, 26, 30 — turn over faster because they fit a wider range of machines, so genuine stock is easier to find and verify. A displacement at the top of the range like 39 moves more slowly, which means a seller with limited genuine stock has more incentive to offer a “close enough“ substitute, a relabeled unit, or a reconditioned pump without disclosing it clearly. None of that means every seller does this — it means the buyer's verification step matters more here than it would for a common variant. What to check before you pay:- Ask for the complete part number stamped on the unit's housing, not a shortened version. Ask directly whether the pump is factory-new, reconditioned, or a compatible substitute — and get that answer in writing on the quote, not just verbally. If a seller offers this exact displacement at a price noticeably below every other quote you've received, treat that as a reason to ask more questions, not a reason to move faster. If you're told 39 isn't available — what genuine alternatives look like:- If a supplier can't source a genuine PVR50-39 and suggests a substitute, the honest version of that conversation names the actual alternative part number and explains the tradeoff — slightly less flow with a -36, for instance — rather than quietly shipping something else under the same label. If a seller can't name what they're actually sending you, that's the point to look elsewhere. Sourcing it through Advance Hydraulic Works:- Advance Hydraulic Works operates as an importer and trader of hydraulic pumps and motors, not a manufacturer. For a lower-turnover part number like this one, that distinction matters — the value is in verifying genuine stock and being upfront about what's actually available, rather than filling an order with whatever's on the shelf. FAQs:- 1.Is PVR50-39 the highest displacement in the PVR50 series? It's at or very near the top of the range for this frame size. Needing meaningfully more flow than this usually points to a larger frame size rather than a higher number within PVR50. 2.Why is that displacement harder to source than the PVR50-20 or PVR50-26? This is a low-width variety, so the actual inventory changes more slowly across providers, increasing the danger of encountering mislabeled or substituted units if you do not verify component ranges carefully 3.What should I ask for before buying the PVR50-39? The Printed on the housing is a wide variety of entire elements, as well as a written statement of whether the unit is new, refurbished, or a compatible alternative. 4.Does Advance Hydraulic Works manufacture this pump? No — it sources and supplies genuine units as an importer and trader rather than manufacturing them in-house.
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