Harris Calorific Multistage Gas Regulators. Each stage presents a nozzle that is completely separate avoiding contamination of the original gas stream. Because each stage presents a separate nozzle accuracy of delivery of gas is inherently high. Even when charged with the same gas delivery may be delayed by one or two minutes because the volume of gas being delivered through the hose is changing. This feature provides a safety margin for patients and personnel. Bottles gas and bottles may be easily changed without having to remove the entire regulator from the system. Specifications for Harris Calorific Multistage Gas Regulators 3302644 : Gas: Arg/Nit/Hel InletCGA: 580 Flow CapacityStandard CFH: 1955/2339/6210 DeliveryRange psi: 1 250 Delivery PressureGauge psig: 400 Supply PressureGauge psig: 4000 Unit: Each Valve Outlet: 0.6 cm (1/4") NPT Body Outlet: 0.6 cm (1/4") NPT (Please note that the description and stock photo may not correspond to the specific model listed above) We offer only genuine Harris Calorific products authorized for sale in the U.S. and other markets so you can be sure that you are buying authentic Labware & Accessories with a full manufacturer's warranty in addition to our own 100percent Satisfaction Guarantee. We are your premier online distributor for Harris Calorific Labware & Accessories. We are an authorized supplier to all federal and state government agencies as well as to research and educational institutions and can facilitate volume orders on many types of laboratory equipment lab consumables and other products to help fulfill your specific needs. We offer Free Shipping and FREE USPS shipping to APO and FPO addresses on all orders in our store over 49. Please refer to our APO/FPO Shipping and Export Restrictions for more information on export to APO/FPO addresses. In addition to the Harris Calorific Multistage Gas Regulators 3302644/ 55850-426 we carry a full complement of Labware & Accessories as well as other product offerings from Harris Calorific. We also carry a full line of Harris Calorific accessories to help meet your laboratory and scientific needs. For a complete selection of Harris Calorific Labware & Accessories please visit our Harris Calorific page. For more brand name Labware & Accessories please visit our Labware & Accessories store section. To see our complete line of lab medical industrial and scientific products please see our science and lab equipment online catalog. Harris Calorific Multistage Gas Regulators 3302644