Page 244 - Praxair - Specialty Gases and Equipment Reference Guide

Regulators

How to Order Praxair Regulators

In accordance with our philosophy of flexible design, Praxair A Select the desired outlet pressure range from those
has developed a versatile modular manufacturing system to available in the A column. The selection of an outlet
accommodate any individual requirement. With all the options pressure range automatically specifies the outlet
Praxair offers, listing discrete part numbers for each regulator pressure gauge which appears in the adjacent column.
series would be impossible. Therefore, we have created a part For example, a regulator with a 0-250 psig outlet
number matrix which allows you to design a regulator to meet pressure range will have a 0-400 psig pressure
the needs of your application. gauge installed.
To complete the part number matrix, consult the Regulator B Choose the inlet pressure gauge from those available
Summary and Reference Guide on page E •241. On this page, in the B column. While the most common cylinder
you will find a description of each series of Praxair regulators pressure is between 2200 psig and 2400 psig, several
with their recommended application and appropriate gas usage. gases are stored in cylinders at other pressures.
You may also refer to the Pure Gases section of the Praxair
Specialty Gases & Equipment reference guide for equipment C Indicate the outlet assembly desired from those avail-
recommendations that will help you make the proper selec- able in the C column. Since there are a wide variety of
tion (see Section B). If you are new to selecting regulators or tubing and piping systems in use, the matrix accom-
would like a quick refresher, review steps A through D below. modates virtually any style of connection, eliminating
The “quick-find” reference guide on page E •241 will help you the need for adapters and reducing potential leak
identify the catalog page that contains the regulator information paths. Praxair also offers a choice of valve options for
you need. If you require additional assistance, please consult gas flow control.
your local Praxair sales representative or call Praxair customer D Select an assembly option from those available in the
service at 1-877-PRAXAIR. D column. A bare body regulator is shipped without
peripherals, with all ports open and unplugged. A
Example standard regulator comes completely assembled with
When using the table below to order a 4000 Series 316L all selected peripherals, ready for use.
stainless steel, single stage cylinder regulator with an
(A) outlet pressure range of 0-50 psig, a (B) 0-4000 psig CGA Specify an inlet connection. On all regulator series,
inlet pressure gauge, a (C) diaphragm valve with a 1/4" tube Praxair will provide any CGA, DIN 477, BS 341, or other
fitting, (D) psi/kPa pressure gauges, and a (CGA) CGA 580 standard connection provided it is recognized as safe Section E – Gas Handling Equipment
connection for nitrogen service, the part number would be for the materials of construction and pressure rating
PRS40222331-580 (see page E •248). 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).
s

Regulators PRS4022ABCD-CGA Highlighted selection indicates most popular model
A B C D CGA
Outlet Pressure Outlet Gauge Inlet Gauge Outlet Assemblies Assembly/Gauges Inlet Connections
1: 0-15 psig* 30"-0-30 psig 0: None 0: 1/4" FNPT Port 0: Bare Body CGA, DIN 477,
2: 0-50 psig 30"-0-100 psig 3: 0-4000 psig 1: 1/4" MNPT 1: Standard Assembly BS 341 and others
3: 0-100 psig 30"-0-200 psig 5: 0-1000 psig 2: 1/4" Tube Fitting (psi/kPa Gauges) available.
4: 0-250 psig 0-400 psig 6: 0-300 psig 3: Diaphragm Valve 1/4" Tube Fitting 2: Standard Assembly
5: 0-500 psig 0-1000 psig 7: 0-400 psig 4: Diaphragm Valve 1/4" MNPT (bar/psi Gauges)
7: 0-150 psig 30"-0-200 psig 8: 0-6000 psig 5: Needle Valve 1/4" MNPT 4: Cleanroom Assembly
6: 1/8" Tube Fitting (psi/kPA Gauges)
7: 3/8" Tube Fitting 5: Cleanroom Assembly
8: Diaphragm Valve 1/8" Tube Fitting (bar/psi Gauges)
* Not available with 5500 psig 9: Diaphragm Valve 1/4" FNPT
inlet pressure

1-877-PRAXAIR www.praxairdirect.com E•243