Zhejiang Weilan Technology Co., Ltd.

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Selection guides, maintenance notes and application stories

Applications

Pool Water Standards and Automated Control

Key pool water limits explained, plus a pH/chlorine closed-loop dosing automation design.

Applications

Boiler Water Treatment Dosing Essentials

Roles and dosing control of ammonia, hydrazine and phosphate, with automated dosing system design.

Technical Articles

Tips for Dissolving and Dosing PAC/PAM

Flocculant solution strength, maturation time, dosing-point selection and common preparation mistakes.

Technical Articles

Metering Pump Installation and Piping Design

Engineering details that determine dosing accuracy: mounting height, pipe sizing and dampener configuration.

Maintenance

Winterizing Your Dosing System

How cold affects pumps and chemicals, insulation and heat-tracing measures, and shutdown protection.

FAQ

Metering Pump Selection FAQ

The 8 most common selection questions — sizing flow, choosing materials, VFD or not — answered clearly.

Industry News

Quick Overview of Water Quality Standards

Key parameters from drinking water, pool and hospital wastewater standards for instrument selection.

Applications

CIP Dosing Control for Food & Beverage

Caustic/acid concentration control, hygienic pump configuration and water-saving retrofit ideas.

Applications

Hospital Wastewater Disinfection Dosing

GB18466 compliance, NaOCl dose calculation and online chlorine monitoring configuration.

Applications

MBR Membrane Chemical Cleaning Dosing

How to set up chemical dosing for MBR membrane cleaning: common chemicals for maintenance and recovery cleaning (NaOCl, citric or hydrochloric acid) and metering pumps grouped per membrane train with flow meters and PLC timers.

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