News & Insights
Valve industry insights, technical guides and company news
Sourcing Medium and High Pressure Valves from China: RFQ, Supplier Evaluation and Document Verification
Sourcing medium and high pressure valves from China is won not on price pressure but on clear requirements, verified suppliers and locked-down documentation. This article provides the mandatory RFQ data, supplier assessment points, document verification method and a list of common pitfalls, usable directly as a purchasing template.
LNG Cryogenic Valve Selection and BS 6364: Materials, Extended Bonnets and Cryogenic Type Testing
LNG (−162 °C) and cryogenic service impose three hard requirements on valves: cryogenic materials, extended bonnets and cryogenic type testing. This article covers the material spectrum from low-temperature carbon steel to austenitic stainless steel, BS 6364 requirements and selection points across an LNG terminal.
CE / PED 2014/68/EU for EU Export: Valve Categories, Conformity Assessment and Documentation
Exporting valves to the EU makes PED 2014/68/EU unavoidable. This article explains the scope, how the Category is determined, conformity assessment modules and the technical file, and corrects the common misconception that CE is a single certificate.
Full Bore vs Reduced Bore Ball Valves: Pigging Capability Is the Dividing Line
Full-bore ball valves match the line diameter, have almost no pressure loss and allow pigging; reduced-bore valves are lighter and cheaper but introduce pressure loss. This article compares bore, pressure drop, weight and cost, and sets out where full bore is mandatory.
Metal-Seated vs Soft-Seated Butterfly Valves: Three Decision Lines — Temperature, Medium and Leakage Class
Soft-seated butterfly valves target zero leakage but are limited by temperature and medium; triple-offset metal-seated designs withstand high temperature and erosion and are inherently fire-safe. This article uses temperature, medium and leakage class as three decision lines for valve selection.
API 6D vs ASME B16.34: Which Standard Should Pipeline Valves Be Bought To?
ASME B16.34 and API 6D are often confused, yet one is the basic design standard for the pressure boundary and the other a complete product specification for pipeline systems. This article explains how their scopes differ, what API 6D adds on top, and how to decide which standard to order against at RFQ stage.