Valve selection guides, standards explained and company news from the VTXFLOW engineering team.
Ball and butterfly valves both turn 90° — but differ sharply in sealing, pressure drop, weight and price as size grows. Selection guidance with crossover sizes.
Read Article →PTFE, RPTFE and PEEK soft seats vs Stellite and carbide metal seats — leakage class, temperature limits, abrasion, torque and cost compared for ball valves.
Read Article →Electric or pneumatic valve actuator? Fail-safe behavior, speed, torque, hazardous areas, control precision and total cost compared, with selection rules.
Read Article →Gate and ball valves compared for pipeline isolation — sealing, speed, pressure drop, size, automation and cost, with clear selection rules.
Read Article →Gate valves isolate, globe valves regulate. Flow path, pressure drop, seat life and selection rules for choosing between them — with Y-pattern and bellows options.
Read Article →What API 598 and ISO 5208 actually require — shell tests, seat leakage rates and acceptance classes — and which standard applies to your valve order.
Read Article →A practical guide to cryogenic valve selection down to -196°C — materials, extended bonnets, BS 6364 testing and the differences between LNG, LOX and LN2 duty.
Read Article →The difference between API 600 cast steel and API 602 forged steel gate valves — size ranges, pressure classes, bonnet types and where each belongs.
Read Article →Wafer and lug butterfly valve bodies compared — installation, dead-end service, maintenance and cost, with selection guidance.
Read Article →Carbon steel WCB or stainless CF8M? Temperature limits, corrosion resistance, cost and where each valve body material belongs.
Read Article →When to specify a floating ball valve and when a trunnion-mounted design is necessary — pressure, size, torque and cost explained.
Read Article →A practical guide to choosing between gate, globe and ball valves — function, pressure drop, cost and typical applications compared.
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