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Master Plumber — Revised National Plumbing Code

Master Plumber board reviewer: provisions of the RNPCP.

Reviewer for the Revised National Plumbing Code of the Philippines (RNPCP) for the Master Plumber board.

1

Purpose of the Code

The Revised National Plumbing Code of the Philippines sets minimum standards for plumbing design, materials, and installation nationwide.

2

Materials & Workmanship

The code specifies approved pipe materials (PVC, GI, copper, cast iron) and proper joining, support, and testing methods.

💡 Exam Hack

All plumbing work must be tested (water or air test) before being covered — a common code requirement.

3

Systems Covered

SystemFunction
Water supplyDeliver potable water
Sanitary drainageRemove waste
VentBalance air pressure
Storm drainageRemove rainwater
4

Code Basis

⚠️ Common Mistake

The plumbing code is based on RA 1378 and the principles that "wherever there is potable water there should be plumbing, and plumbing shall protect public health."

📌 Quick Recap — Master These

Before your exam, make sure you can confidently explain and apply each of the following:

  • Purpose of the Code
  • Materials & Workmanship
  • Systems Covered
  • Code Basis

Re-read any section above where you hesitate, then explain it aloud in your own words — if you can teach it simply, you understand it. Focus your final review on the tables, formulas, and the common-mistake warnings, since those are where most points are won or lost.