How Does Check Valve Work? Pressure, Types, and Fixes

A check valve, also called a non-return valve or one-way valve, allows liquid or gas to move in one permitted direction and automatically blocks reverse flow. The valve opens when upstream pressure overcomes downstream pressure plus the valveās cracking pressure, then closes through a spring, gravity, hinge action, or backpressure when forward flow falls. Key […]
How Do You Diagnose a Slow Draining Toilet?

You diagnose a slow draining toilet by isolating the system and testing the flush velocity independently of the tank mechanics. Never guess the cause of a slow drain. Applying a plunger to a mineral scale problem wastes time and damages the wax ring seal. The System Isolation Test Run the bathroom sink and shower simultaneously, […]