Refinery Valves
4 in-depth engineering guides on Refinery Valves — specification, selection, testing and procurement.
Everything on Refinery Valves
Vajra's engineering team has published 4 technical guides covering Refinery Valves 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.
HF Alkylation Unit Valve Selection: Monel, Safety, and Handling Guide
Hydrofluoric acid (HF) alkylation units produce high-octane alkylate using anhydrous HF as catalyst - one of the most hazardous and corrosive services in any refinery. Valve selection is dominated by Monel construction, tight isolation, and rigorous safety design. This guide explains the requirements.
Sulfur Recovery Unit (Claus) Valve Selection Guide
The sulfur recovery unit (SRU) converts toxic hydrogen sulfide into elemental sulfur via the Claus process. Its valves must handle acid gas, high-temperature reaction furnace service, and molten sulfur that solidifies if it cools. This guide covers SRU valve selection across each service.
Valve Selection for Molten Sulfur Service - Jacketed Design, Materials & Refinery Application
Molten sulfur (liquid sulfur) solidifies at 119°C - any valve that loses heat will seize immediately. Steam-jacketed gate or ball valves in carbon steel are the industry standard for refinery SRU service.
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