About PumpValveBook

PumpValveBook is a manually reviewed directory of valve, pump, actuator and instrumentation manufacturers. We research each company individually, verify its official website, and write an original profile - no scraped text, no syndicated marketing copy, no paid placement.

The site is maintained by the FlowEngineer engineering team and updated weekly. External manufacturer links are marked nofollow: we list companies for reference, not as paid advertising. Technical articles are published in our Ghost blog and referenced throughout the directory.

Editorial policy

Every profile states the company country, founding year and product range. When an official website cannot be verified, we say so and link nothing. Companies cannot buy inclusion or ranking position. Corrections are welcome via the contact page.