severe service
3 in-depth engineering guides on severe service — specification, selection, testing and procurement.
Everything on severe service
Vajra's engineering team has published 3 technical guides covering severe service for industrial valve selection, specification, testing and procurement. Browse the full set below.
FCC Slide Valves: Catalyst Service Valve Selection and Design Guide
Fluid catalytic cracking (FCC) units rely on slide valves to control the circulation of hot catalyst between the reactor and regenerator. Operating above 700 deg C in dense, abrasive catalyst flow, these valves are among the most severe-service valves in any refinery. This guide covers slide valve design, materials, and selection.
Anti-Surge Valves for Centrifugal Compressors: Design and Selection Guide
Anti-surge valves protect centrifugal compressors from the destructive flow reversal known as surge by rapidly recycling gas back to the suction. This guide covers surge physics, the demanding requirements on stroke speed, trim, and sizing, and how to select a reliable anti-surge valve.
Severe Service Control Valves: Anti-Cavitation, Anti-Noise & Multi-Stage Trim
When pressure drops are extreme, standard control valve trim cavitates, flashes, or screams. Severe-service trim manages energy in stages to protect the valve and the downstream pipe. This guide explains the failure mechanisms and the trim that defeats them.
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