Cast Iron vs Ductile Iron Valve Material: What Is the Difference?
Compare cast iron and ductile iron valve materials by strength, toughness, pressure rating, water service, wastewater use, corrosion protection, cost, and selection requirements.
Gate Valve: 5 Types, Parts, and Working Principle
Explore the main gate valve types, components, and operating principle, including wedge, parallel-slide, resilient-seated, metal-seated, rising-stem, and non-rising-stem designs. The guide explains how gate valves provide full-open or full-closed pipeline isolation and highlights key selection factors such as seat construction, body material, pressure and temperature, media compatibility, actuation, maintenance, and applicable standards.