This build guide documents the complete design and construction of a compact, modular Pump Case for mobile and off-grid water systems. It is based on real-world use, engineering best practices, and a strong focus on durability, serviceability, and safety.Across 37 pages, the guide walks you step by step through the complete system — from component selection and mechanical layout to electrical wiring, filtration, UV treatment, and commissioning.This is a hands-on engineering guide created for people who want to build a water system they can trust.What this guide covers:System concept and design philosophyComponent selection with clear technical reasoningStainless steel components and flexible stainless braided hosesElectrical system design (12 V DC / 230 V AC separation)Proper fusing, cable sizing, polarity checks, and safety considerationsPump integration and pressure managementPre-filtration, activated carbon filtration, and UV disinfectionThread standards, fittings, sealing methods, and common pitfallsAssembly steps with practical tips from real buildsTesting, commissioning, and troubleshootingMaintenance and service recommendationsAll decisions are explained clearly, so you understand why a component is used — not just how.Who this guide is forOverlanders and travellers building reliable water systemsDIY enthusiasts who value quality and long-term reliabilityEngineers and makers who want a clean, well-documented solutionAnyone who prefers stainless steel over plastic, and proper design over shortcutsFormat & deliveryDigital download (PDF)High-resolution diagrams and clear explanationsWritten in clear, technical EnglishInstant access after purchaseUpdates & VersionsAll buyers receive free updates within the same product version (PC-2025-1000UV), including corrections, clarifications and minor improvements. Future major revisions (e.g. PC-2026-1000UV) are considered new products and are not included in this guide.This approach allows each guide to remain technically accurate, validated and fully documented for its specific system configuration.