Independent procurement coordination
Positive Displacement Pump Sourcing
Positive Displacement Pump Sourcing is an independent sourcing partner for industrial positive displacement pump inquiries. The service collects a buyer brief, requests factory quotations against the same duty, and returns comparable replies. We do not own a foundry, keep warehouse stock, or act as a brand-appointed reseller. Public manufacturer pages are research snapshots used to show which numbers are published separately, not a claim of affiliation.
Evidence policy
Claims on this site must be supportable from the buyer brief, the supplier reply, or a named public reference with a date. Factory ownership, inspected-plant status, and percentage savings are not published because those facts are not configured for this service.
Evidence policy: Upstream
The buyer owns fluid identity, viscosity at operating temperature, solids, shear limits, required flow with test conditions, quantity, destination and delivery window. Optional budget (amount or range, currency, per-unit or whole-order) and a preference for premium, mid-range, budget-friendly or undecided suppliers are buyer preferences, not ratings we have verified. If a drawing revision matters, write the revision in the form; there is no upload control.
Control boundary
Factories confirm model, materials, seals, drive, included skid items and exclusions. They do not inherit a sanitary rotary-lobe family limit as proof that wastewater grit is acceptable. Relief valves, bypass lines and PLC interface signals stay with the party named in the quote. Connected load in kW and supply frequency in Hz appear after the drive is sized. We restack those fields; we do not invent missing values.
Downstream
Plant engineering accepts piping, installation, FAT, SAT and spare-parts lists in the purchase contract. Catalog cards on this site are inquiry labels. They are not stocked SKUs. A 2026 research snapshot of a published rotary-lobe page that reports flow, differential pressure and temperature in separate columns is used only to teach that those columns are not one operating point.