July/August 2011 - Edge regulator technology is available in an expanded lineup. Victor VGS, CSR and AF 250 regulators will transition to Edge ESS4 series high capacity and Edge ESS3 series medium capacity regulators for air, acetylene, oxygen, carbon dioxide, LPG and inert gases. Victor Edge regulators are easy to use, durable, compact, designed for performance and meet or exceed industry safety standards.