Red Seal Plumbing Practice Exam 2025 - Free Red Seal Plumbing Practice Questions and Study Guide

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Question: 1 / 400

The minimum working pressure for propane cylinders is _____ psig.

120

180

240

Propane cylinders are pressurized containers used to store and transport propane gas. The minimum working pressure for these cylinders can vary depending on the size and purpose of the cylinder. Option A (120 psig) is incorrect because this is the minimum fill pressure for most small propane cylinders, but not necessarily the minimum working pressure. Option B (180 psig) is also incorrect as this is the minimum working pressure for larger propane cylinders, but not for all sizes. Option D (300 psig) is incorrect because this is the maximum working pressure for most propane cylinders, but again not the minimum. Therefore, option C (240 psig) is the correct answer as it is the minimum working pressure for most medium sized propane cylinders.

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