Duplex vs. Super Duplex Stainless Steel: Choosing Valve Materials
Quick Answer: Duplex vs. Super Duplex Stainless Steel for Valves Choose duplex stainless steel for valve bodies when you need […]
Materials & Corrosion
Valve Standards & Specifications
Valve Leakage Testing: API 598 vs. ISO 5208 Compared
Quick Answer: API 598 vs. ISO 5208 for Valve Testing API 598 and ISO 5208 both define shell and seat […]
Valve Standards & Specifications
API 609: The Standard for Butterfly Valves Explained
Quick Answer: What Is API 609 and When Does It Apply? API 609 is the American Petroleum Institute standard for […]
Valve Selection
Plug Valve Selection: Lubricated vs. Non-Lubricated
Quick Answer: How to Select a Plug Valve Choose a plug valve by answering four questions: does the service require […]
Valve Selection
Knife Gate Valve Selection: Types, Sizing, and Application Guide
Quick Answer: How to Select a Knife Gate Valve Selecting a knife gate valve comes down to five decisions: the […]
Glossary
What Is a Valve Pressure Class? Understanding Class 150, 300, and 600
The Short Answer A valve’s pressure class (Class 150, 300, 600, 900, 1500, 2500) is a rating designation from standards […]
Glossary
What Is Valve Trim? Components, Materials, and Why It Matters
The Short Answer Valve trim is the collective term for the replaceable internal parts of a valve that are in […]
Glossary
What Is Water Hammer? Causes, Effects, and How Valves Prevent It
The Short Answer Water hammer (also called hydraulic shock or surge) is a pressure surge that travels through a liquid-filled […]
Valve Selection
Check Valve Selection: Types, Sizing, and Application Rules
The Short Answer Select a check valve by three things: backflow prevention requirement, flow velocity, and service conditions. Choose swing […]
Valve Selection
Globe Valve Selection: Key Criteria for Throttling Service
The Short Answer Select a globe valve when the valve must modulate or throttle flow and tight shutoff matters. Choose […]
Valve Selection
Selecting Control Valves for Pressure and Flow Control
The Short Answer A control valve is a throttling valve that modulates flow in response to a signal from a […]
Troubleshooting & Maintenance
Valve Cavitation: Causes, Symptoms, and Remedies
The Short Answer Cavitation happens when liquid flowing through a valve drops below its vapor pressure and flashes into vapor […]
Troubleshooting & Maintenance
Ball Valve Leaking at the Stem: Causes and Repairs
The Short Answer A ball valve leaking at the stem means the stem seal system — the packing or O-rings […]
Troubleshooting & Maintenance
Common Gate Valve Failures and How to Fix Them
The Short Answer The most common gate valve failures are seat leakage, stem/packing leakage, stem seizure, disc erosion, and body-bonnet […]
Valve Standards & Specifications
Fire-Safe Valve Testing: API 607 vs. ISO 10497 Explained
The Short Answer A fire-safe valve is one that has been fire-tested and certified to limit leakage through the seat […]
Valve Standards & Specifications
ASME B16.34 vs. API 6D: Pressure-Temperature Ratings Explained
The Short Answer ASME B16.34 is the base design standard for steel valves: it defines pressure-temperature ratings, wall thickness, materials, […]
Valve Standards & Specifications
API 600 vs. API 603: Understanding Gate Valve Standards
The Short Answer API 600 covers bolted-bonnet steel gate valves for petroleum and natural-gas service — carbon steel, alloy steel, […]
Industry News
The Hydrogen Economy and Its Impact on Valve Design
The Short Answer Hydrogen is the smallest molecule in existence, it can embrittle steels, and it is handled from cryogenic […]
Industry News
Global Valve Market Outlook: 2026 and Beyond
The Short Answer The global industrial valve market continues to grow steadily, driven by energy investment (oil and gas, power), […]
Industry News
Recent Trends in Industrial Valve Technology
The Short Answer The industrial valve industry is being reshaped by five forces: digitalization (smart positioners, sensors, and IIoT connectivity), […]
Materials & Corrosion
PTFE vs. Metal Seated Valves: When to Use Which
The Short Answer Choose PTFE (soft) seats when you need bubble-tight shutoff, clean media, and temperatures up to about 200°C […]
Materials & Corrosion
NACE MR0175 / ISO 15156: Sulfide Stress Cracking and Sour Service Valves
The Short Answer In wet hydrogen sulfide (H2S) service, susceptible steels can fail by sulfide stress cracking (SSC) — a […]
Materials & Corrosion
Selecting Valve Body Materials: Cast Steel, Stainless Steel, and Alloys
The Short Answer Match the valve body material to the media corrosivity, design temperature and pressure, and cost target. For […]
Drawings & Calculations
Understanding Valve Dimensions: Face-to-Face and End-to-End
The Short Answer Face-to-face (F-F) is the dimension between the two sealing faces of a flanged valve — the distance […]
Drawings & Calculations
Valve Flow Coefficient (Cv) Calculations Explained
The Short Answer Cv is the flow coefficient: the number of US gallons per minute of water at 60°F that […]