fire-safe
4 in-depth engineering guides on fire-safe — specification, selection, testing and procurement.
Everything on fire-safe
Vajra's engineering team has published 4 technical guides covering fire-safe for industrial valve selection, specification, testing and procurement. Browse the full set below.
Valve Selection for LPG Service: Propane, Butane & NGL Handling
LPG service requires fire-safe, ASME B16.34-rated valves with appropriate pressure ratings and material selection - propane at –42°C boiling point and butane's flash point characteristics create specific valve specification requirements.
Metal-Seated Ball Valves for High-Temperature and Abrasive Service
Soft-seat (PTFE/RPTFE) ball valves have an upper temperature limit of 180-200°C continuous service. Above this temperature, or in fire-safe critical applications, metal-seated ball valves are required. Metal seats achieve API 598 Class V and Class VI shutoff through precision lapping of hard metallic seating surfaces, not through elastomeric deformation.
Valve Selection for Oil & Gas Upstream Operations
Upstream oil and gas operations demand the highest valve reliability - wellhead blowouts and pipeline failures are catastrophic. This guide covers Christmas tree configurations, NACE sour service requirements, fire-safe testing, and the API 6D compliance framework for upstream valve procurement.
Triple-Offset Butterfly Valves: Design, Standards, and Applications
Triple-offset butterfly valves (TOBVs) represent the highest performance tier of the butterfly valve family - eliminating rubbing contact during operation, providing metal-to-metal bubble-tight shut-off, and qualifying for fire-safe service per API 607. This guide explains the three geometric offsets, compares TOBV to double-offset designs, and covers key selection criteria.
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