Page 278 - Praxair - Specialty Gases and Equipment Reference Guide

301 and 302 Regulators

High Purity Two Stage Regulator for Corrosive and Non-Corrosive Service

Piston-Sensed High Purity Low Flow Regulators
Nickel-Plated Brass Body (301 Series)
Aluminum Body Anodized (302 Series)

Typical Applications
Can be used in applications where precise pressure control is required
for low flows. This regulator can also be used for transportable cylinders.

Features and Benefits
n Compact and Light Weight n Available in Nickel or n Outlet Pressure Ranges n 316 Stainless Steel
Can be used in a wide variety Aluminum Three ranges 1-100 psig Diaphragm
of applications Wide variety of gas services Diffusion resistant
n Economical Two Stage
n Low Internal Volume Design
Helps minimize gas Long proven service life
consumption

Specifications Materials Section E – Gas Handling Equipment
n Maximum Inlet Pressure n Ports n Body n Piston
3000 psig (210 bar) 1/8" NPTF Brass – 303 stainless steel
Nickel-plated barstock
n Temperature Range n Gauges n Seats/Seals
-40 °F to 165 °F Nickel-plated – Aluminum – Viton /Teflon ®
®
(-40 °C to 74 °C) 1-1/2" chrome-plated steel Anodized
Aluminum – n Diaphragm
1-1/2" 316 stainless steel 316 stainless steel
Ordering Information – Series PRS301-ABC-CGA (Nickel) and Series PRS302-ABC-CGA (Aluminum)
A B C CGA
Outlet Pressure Outlet Gauge Inlet Gauge* Outlet Assemblies Inlet Connections
1: 0-10 psig 0-30 psig 1: 0-3000 psig 0: 1/8" FNPT CGA,
2: 0-50 psig 0-100 psig 1: Needle Valve 1/8" MNPT DIN, BS
3: 0-100 psig 0-200 psig 2: Compression Fitting, 1/8" MNPT x 1/8" Compression and others available
3: Compression Fitting, 1/8" MNPT x 1/4" Compression

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