Guarantees constant delivery pressure even when cylinder pressure varies. Two-stage regulator with brass body and stainless steel diaphragm. Maximum inlet pressure of 20,700 KPa. Supplied with CGA-540 adapter. Includes a Swagelok™ 1/4 in. NPT to 1/8 in. fitting which is used to attach the regulator to the purge gas tubing. Approximate weight: 1.3 Kg.