FAQ

RO pump questions OEMs actually ask.

GPD matching, series selection, self-priming, certifications, and how to reach the sample desk. Plain answers — no catalog dump.

How do I choose an RO booster pump by GPD?

Match membrane flux first. 50–400 GPD tank under-sink systems typically use PEILI 502 compact. Tankless 400–800 GPD kitchens use 502/605 high-flow or 605 silent damping. Commercial 800–1600 GPD platforms use 605 high-flow or brushless. High-TDS feed water may need 505 or brushless high-pressure — not a louder compact head.

What is the difference between PEILI 502 and 605 series?

502 is the compact 50–400 GPD workhorse for household RO with self-priming options. 605 covers high-flow (400–1600 GPD), silent damping (≤ 42 dB(A) class), brushless commercial duty, and dual-head layouts. Same factory QC stack; different hydraulic envelopes and duty cycles.

Do I need self-priming or boost-only?

If the raw-water tank sits above the pump or the line can run dry on first fill, specify self-priming 502. If the inlet is flooded (municipal or pressurized feed), boost-only is enough. Mixing them in one SKU line causes returns.

What certifications does PEILI hold?

PEILI holds ISO 9001 quality management, CE conformity, and CQC certification for diaphragm booster pumps. Certificate scans are available on request with an inquiry.

What is PEILI's annual RO pump capacity?

Manufacturing is in Jiangmen, Guangdong with annual capacity exceeding 2,000,000 pumps per year across six series and 30+ models from 50G to 1600G.

Where are PEILI pumps designed and tested?

R&D and acoustic validation are in Huazhi Science Park, Beijiao, Shunde, Foshan — including a dedicated silent chamber. Production and 100% leak testing are in Jiangmen Xinhui.

What quality tests does every PEILI pump receive?

Every unit receives 12 kg hydrostatic leak testing. Protocol benches log 3.5 MPa burst and 12 kg × 100,000 water-hammer cycles. Flow and pressure curves can be stored per serial for OEM traceability.

How fast does PEILI respond to OEM inquiries?

Engineering first reply within one hour on business days when GPD, voltage, annual volume, and application notes are included. Samples ship from Jiangmen after curve match.

Can PEILI support dual-sourcing an existing RO pump?

Yes. Send the incumbent model, mounting envelope, port standard, voltage, and your incoming QC leak number. PEILI confirms mechanical fit and trial batches before annual agreements.

How do I contact PEILI for samples or quotes?

Use the Contact & Inquiry form at peiliro.com/contact, email sunkery@126.com, or WhatsApp +86 18988680732 (Simon Shan). Include target GPD, noise, voltage, and destination market.