ASME B16.5
4 in-depth engineering guides on ASME B16.5 — specification, selection, testing and procurement.
Everything on ASME B16.5
Vajra's engineering team has published 4 technical guides covering ASME B16.5 for industrial valve selection, specification, testing and procurement. Browse the full set below.
Raised Face vs Flat Face vs Ring Type Joint: Valve Flange Selection Guide | ASME B16.5
Choosing the wrong flange face type - RF, FF, or RTJ - can cause leaks or damage to connecting equipment. This guide explains when each face type is appropriate, per ASME B16.5 and ASME B16.20.
Valve End Connection Types: Flanged, BW, SW, Threaded & Wafer
Valve end connection selection determines installation compatibility, pressure capability, and maintenance access. This guide covers all valve end connection types - RF and RTJ flange facing, ASME B16.5 vs B16.47 large-bore flanges, butt weld and socket weld, NPT and BSP threaded, and wafer vs lug vs double-flanged butterfly valves.
ASME B16.5 Flange Dimensions: Class 150–2500 Raised Face and RTJ Tables
ASME B16.5 covers pipe flanges and flanged fittings from NPS 1/2" to NPS 24" in seven pressure classes (Class 150 through Class 2500). This guide provides quick-reference dimension tables for bolt circle, bolting, flange OD, and facing for each class - the data engineers need when specifying or checking flanged valve connections.
Valve Flange Standards Explained: ASME B16.5, PN/DIN, JIS and Interchangeability
Valve flanges must match the adjacent piping system standard precisely - mixing ASME Class 150 flanges with PN 20 flanges appears visually similar but creates dangerous misalignment of bolt holes and seating faces. This guide clarifies the ASME B16.5, EN/DIN PN and JIS B 2220 flange standards, their pressure-temperature ratings, and the rules for safe interchangeability.
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