ASME B16.34
14 in-depth engineering guides on ASME B16.34 — specification, selection, testing and procurement.
Everything on ASME B16.34
Vajra's engineering team has published 14 technical guides covering ASME B16.34 for industrial valve selection, specification, testing and procurement. Browse the full set below.
Pressure Seal Bonnet Gate Valves: Class 900–2500 Selection Guide | API 600 | Vajra
Pressure seal bonnet gate valves use internal pressure to increase sealing force - making them the preferred design for Class 900–2500 high-pressure steam, feedwater, and hydrogen service where bolted bonnets become impractical.
Valve Selection Checklist: 10 Parameters Procurement Engineers Must Specify
Incomplete valve specifications are the single biggest cause of delivery delays and wrong-material supplies. This checklist covers 10 parameters every valve RFQ must define - from line class to fire-test certification.
Globe Valves for Steam Service: T-Pattern vs Y-Pattern, Pressure Seal vs Bolted Bonnet
Globe valves are the primary throttling and control isolation valve in steam systems. Selecting the wrong pattern or bonnet type for the steam pressure class results in wire-drawing damage, stem leakage, or premature failure. This guide covers T-pattern vs Y-pattern design, bonnet selection, and stem packing for Class 150 to Class 2500 steam service.
Gate Valve vs Globe Valve - Which to Use for Isolation and Which for Control?
Gate valves and globe valves are both multi-turn valves and are often confused - but they serve fundamentally different purposes in a piping system. Gate valves are designed for full-open or full-closed isolation with minimum pressure drop. Globe valves are designed for throttling and flow regulation, accepting higher pressure drop in return for controllable flow. This guide explains when to use each.
How to Read a Valve Datasheet - Complete Field-by-Field Guide
A valve datasheet is the single document that defines every aspect of a valve - from its physical size and material to its operating limits and test requirements. Knowing how to read and verify each field is essential for engineers raising purchase specifications and for procurement teams reviewing supplier submittals.
Ball Valve Pressure Ratings: Class 150 to Class 2500 - ASME B16.34 and API 6D Explained
Industrial ball valves are manufactured in ASME pressure classes from Class 150 to Class 2500. This guide explains how class ratings translate to maximum allowable working pressure, how temperature affects rated pressure, the difference between API 6D and ASME B16.34 rating systems, and how to read pressure-temperature tables correctly.
Needle Valve Applications and Selection Guide
Needle valves provide precise flow throttling and positive shut-off in instrument, sampling and hydraulic service. This guide covers construction types, pressure-temperature ratings, materials and selection criteria for demanding applications.
Industrial Strainer Types: Y-Type, Basket and Duplex Selection Guide
Strainers protect pumps, compressors, meters and control valves from pipeline debris. This guide compares Y-type, basket, duplex and temporary strainers across mesh size, pressure drop, materials and application requirements.
Cryogenic Valve Design and LNG Applications
Cryogenic valves must maintain leak-tight performance from ambient temperature down to -196 degrees C for liquid nitrogen, LNG and LPG service. This guide covers extended-stem design, low-temperature material qualification, standards and testing requirements.
Fire-Safe Valve Design and the API 607 Standard Explained
Fire-safe valves are designed to maintain acceptable leakage rates during and after a fire event, protecting process plants from escalating hydrocarbon releases. This guide covers API 607 and API 6FA test requirements, design features, and specification guidance.
ASME B16.34 Pressure-Temperature Ratings for Industrial Valves: Explained
ASME B16.34 is the foundational standard for pressure-temperature ratings of industrial valves. Understanding how to read and apply the P-T tables is essential for safe valve specification. This guide explains the standard, its tables, and common pitfalls.
Globe Valve vs Gate Valve: Flow Control Versus Isolation Explained
Globe valves and gate valves are both multi-turn valves but serve fundamentally different functions. Gate valves are pure isolation devices; globe valves regulate flow. Choosing the wrong type leads to seat erosion, excessive pressure drop, or poor control. This guide explains when to use each.
How to Select the Right Industrial Valve: A Step-by-Step Engineering Guide
Selecting the wrong valve for a process application leads to leakage, premature failure, safety incidents, and costly downtime. This engineering guide walks through every factor to consider - from process conditions and materials to standards and actuation - to ensure the right valve is specified every time.
Ball Valve vs Gate Valve: Technical Comparison for Industrial Applications
Ball valves and gate valves are both used for on-off isolation, but they differ significantly in design, operating characteristics, seating performance, and maintenance requirements. This guide covers everything you need to know to make the right selection.
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