Regulators

Regulators are pressure-control devices that reduce high gas-cylinder pressure to a stable, usable outlet pressure for laboratory and process lines. They sit between a compressed-gas source and the equipment it feeds, holding a set delivery pressure as the cylinder drains. Across the Questpair catalogue, 127 regulators are listed from 10 verified suppliers and distributors across 7 countries. New, used and refurbished units all appear, and 92 percent of the listings are used. Prices run from EUR 6 to EUR 9.175. The spread reflects how far the field stretches, from a simple single-stage cylinder regulator to a corrosion-resistant assembly built for reactive or high-purity gas service.