PRV
3 in-depth engineering guides on PRV — specification, selection, testing and procurement.
Everything on PRV
Vajra's engineering team has published 3 technical guides covering PRV for industrial valve selection, specification, testing and procurement. Browse the full set below.
Self-Actuated Pressure Reducing Valves: Design, Selection and Sizing Guide
Self-actuated pressure reducing valves hold a constant downstream pressure without external power, instrumentation, or a control loop. This guide explains direct-acting vs pilot-operated designs, droop and lock-up behaviour, and how to size and select a PRV for steam, gas, and water service.
Safety Valve vs Pressure Relief Valve: Differences, Standards & Selection
Safety valves and pressure relief valves are often used interchangeably, but they have distinct operating principles, certifications, and applications. This guide clarifies the differences, covers API 526 orifice sizing from D through T, compares ASME Section I boiler requirements versus Section VIII vessel requirements, and provides a systematic selection framework.
Safety Relief Valve Sizing - API 526 Orifice Areas, Back Pressure, and Set Pressure
A safety relief valve (SRV / PSV) is the last line of defence in a pressure system - it must open at the correct pressure and pass sufficient flow to prevent vessel rupture. API 520 (sizing) and API 526 (dimensional standards) define the engineering framework. This guide explains how to select the orifice size, set pressure, back pressure correction, and trim material for your service.
Related topics
Need valves engineered for PRV?
Our engineering team writes these guides and supplies the valves. Send your requirement for a specification review and a 24-hour quote.