butterfly valve
3 in-depth engineering guides on butterfly valve — specification, selection, testing and procurement.
Everything on butterfly valve
Vajra's engineering team has published 3 technical guides covering butterfly valve for industrial valve selection, specification, testing and procurement. Browse the full set below.
Butterfly Valves for Water Treatment: WRAS, Rubber Lining & Size Selection
Water treatment plants require butterfly valves that are WRAS-approved (UK), NSF 61-certified (USA), or AS/NZS 4020-compliant (Australia) to ensure no leaching of toxic substances into potable water. This guide covers lining material selection, body and disc materials for chlorinated and raw water service, size selection from DN200 to DN1200, and actuator requirements for WTP applications.
Ball Valve vs Butterfly Valve: Which Should You Choose?
Ball valves and butterfly valves are both quarter-turn designs, but they serve very different applications. This guide compares them on shutoff class, pressure rating, temperature range, size, cost, and suitability for specific services.
How to Specify a Butterfly Valve - Face-to-Face, Disc, Lining, and Actuator
Butterfly valves are the most diverse valve type - they range from inexpensive rubber-lined wafer valves for water service to large-bore triple-offset metal-seated valves for refinery and pipeline duty. Getting the specification right requires understanding the offset geometry, seat type, end connection, disc material, and actuator torque. This guide walks through every specification parameter.
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