Check Valve Noisy at Night? Causes, Diagnosis, and Fixes
The Short Answer A check valve that makes noise mainly at night is almost always a sign of rapid disc […]
Troubleshooting & Maintenance
Check Valve
Check valves allow flow in one direction only and stop reverse flow automatically, protecting pumps, compressors, and piping systems from backflow damage. This tag collects practical guides on check valve types and operation, including swing check, lift check, and ball check designs, spring-assisted and non-spring models, cracking pressure considerations, and installation positions. Articles also cover common check valve failures such as chattering, slamming, and seat leakage, with troubleshooting steps and selection advice for water, steam, and process applications. Content is written for engineers and maintenance teams who need field-useful answers without manufacturer sales data.
Valve Selection
Check Valve for Vertical vs Horizontal Line: What Works Where
The Short Answer Most check valves can be installed in either a vertical or a horizontal line, but the orientation […]
Drawings & Calculations
Check Valve Cracking Pressure: How to Pick the Opening Threshold
Check Valve Cracking Pressure: How to Pick the Opening Threshold Every check valve has a cracking pressure — the minimum […]
Troubleshooting & Maintenance
Dual Plate vs Swing Check Valve: Which Non-Return Design Fits the Line?
Dual Plate vs Swing Check Valve: Which Non-Return Design Fits the Line? When reverse flow must be stopped, the check […]
Troubleshooting & Maintenance
Check Valve vs Backflow Preventer: Similar Job, Different Standard
Check Valve vs Backflow Preventer: Similar Job, Different Standard In water and process piping, both check valves and backflow preventers […]
Troubleshooting & Maintenance
Spring Check vs Swing Check Valve: Which Check Design to Install
Spring Check vs Swing Check Valve: Which Check Design to Install The Short Answer: A swing check valve uses a […]
Valve Selection
Check Valve vs Foot Valve: Two Check Functions, Two Different Jobs
Check Valve vs Foot Valve: Two Check Functions, Two Different Jobs The Short Answer: A check valve prevents reverse flow […]
Valve Selection
Lift Check Valve vs. Swing Check Valve
The Short Answer A lift check valve uses a disc or piston that lifts vertically off its seat — best […]
Glossary
What Is a Check Valve? Types & Working Principle
Quick Answer A check valve is an automatic one-way valve that allows flow in one direction and blocks reverse flow. […]
Valve Selection
Swing Check Valve vs. Ball Check Valve: Which to Choose
Quick Answer Choose a swing check valve for large pipelines, high-flow services, and clean media where low pressure drop matters. […]
Valve Selection
Ball Check Valve: Working Principle, Types & Selection
Quick Answer A ball check valve uses a free-floating ball that seats against an orifice to block reverse flow and […]