Issue link: http://read.dmtmag.com/i/25778
Gas Handling Equipment Regulators In accordance with our philosophy of flexible design, Praxair has developed a versatile modular manufacturing system to accommodate any indivi- dual requirement. With all the options Praxair offers, listing discrete part numbers for each regulator series would be impossible. Therefore, we have created a part number matrix which allows you to design a regulator to meet the needs of your application. Example When using the table below to order a 4000 Series 316L stainless steel, single stage cylinder regulator with an outlet pressure range of 0-50 psig, a 0-4000 psig inlet pressure gauge, a diaphragm valve with a 1/4" tube fitting, psi/kPa pressure gauges, and a CGA 580 connection for nitrogen service, the part number would be PRS40222331-580 (see page F8). C B CGA D How to Order Praxair Regulators To complete the part number matrix, consult the Regulator Summary and Reference Guide on page F1. On this page, you will find a description of each series of Praxair regulators with their recommended application and appropriate gas usage. You may also refer to the Pure Gases section of the Praxair Specialty Gases & Equipment reference guide for equipment recommendations that will help you make the proper selection (see Section C). If you are new to selecting regulators or would like a quick refresher, review steps A through D below. The “quick-find” reference guide on page F1 will help you identify the catalog page that con- tains the regulator information you need. If you require additional assistance, please consult your local Praxair sales representative or call Praxair customer service at 1-877-PRAXAIR. A Select the desired outlet pressure range from those available in the A column. The selection of an outlet pressure range automatically specifies the outlet pressure gauge which appears in the adjacent column. For example, a regulator with a 0-250 psig outlet pressure range will have a 0-400 psig pressure gauge installed. Choose the inlet pressure gauge from those available in the B column. While the most common cylinder pressure is between 2200 psig and 2400 psig, several gases are stored in cylinders at other pressures. Indicate the outlet assembly desired from those available in the C column. Since there are a wide variety of tubing and piping systems in use, the matrix accommodates virtually any style of connection, eliminating the need for adapters and reducing potential leak paths. Praxair also offers a choice of valve options for gas flow control. Select an assembly option from those available in the D column. A bare body regulator is shipped without peripherals, with all ports open and unplugged. A standard regulator comes completely assembled with all selected peripherals, ready for use. Specify an inlet connection. On all regulator series, Praxair will provide any CGA, DIN 477, BS 341, or other standard connection provided it is recognized as safe for the materials of construction and pressure rating of the regulator. Consult Praxair for proper selection of the inlet connection. A “000” at the end of the part number indicates inlet connection (1/4" female NPT). Regulators PRS4022ABCD-CGA A Outlet Pressure 1: 0-15 psig* 2: 0-50 psig 3: 0-100 psig 4: 0-250 psig 5: 0-500 psig 7: 0-150 psig Outlet Gauge 30"-0-30 psig 30"-0-100 psig 30"-0-200 psig 0-400 psig 0-1000 psig 30"-0-200 psig F 3 B Inlet Gauge 0: None 3: 0-4000 psig 5: 0-1000 psig 6: 0-300 psig 7: 0-400 psig 8: 0-6000 psig C Outlet Assemblies 0: 1/4" FNPT Port 1: 1/4" MNPT 2: 1/4" Tube Fitting 3: Diaphragm Valve 1/4" Tube Fitting 4: Diaphragm Valve 1/4" MNPT 5: Needle Valve 1/4" MNPT 6: 1/8" Tube Fitting 7: 3/8" Tube Fitting 8: Diaphragm Valve 1/8" Tube Fitting 9: Diaphragm Valve 1/4" FNPT * Not available with 5500 psig inlet pressure Highlighted selection indicates most popular model D Assembly/Gauges 0: Bare Body 1: Standard Assembly (psi/kPa Gauges) 2: Standard Assembly (bar/psi Gauges) 4: Cleanroom Assembly (psi/kPA Gauges) 5: Cleanroom Assembly (bar/psi Gauges) CGA Inlet Connections CGA, DIN 477, BS 341 and others available. 1-877-PRAXAIR www.praxair.com/specialtygases