Page 288 - Praxair - Specialty Gases and Equipment Reference Guide

5031 Gas Delivery System

High Flow Automatic Changeover for Non-Corrosive and Corrosive Service

High Flow/High Purity Automatic Changeover System
The 5032B (Brass) and 5031S (316 Stainless Steel) Series high flow/
high purity automatic changeover systems are designed to provide
continuous supply of high purity gases to the laboratory, process
or instrument. The Series 5032 incorporates two regulators set at
different delivery pressures. Down stream line regulators are recom-
mended to help eliminate supply pressure effects.

Basic Functional Description
When primary supply to the changeover (primary) is consumed, the
secondary supply (reserve) feeds the downstream process. By turning
the regulator handknob clockwise, the primary supply can then be
replenished. When the reserve is depleted the primary will then begin
to feed the process. With a counter clockwise turn of the changeover
regulator handknob, the reserve side can than be replenished.
Typically the 5031B/5031S Series are used with one cylinder per side.
To connect more than one cylinder per side, please order manifold
headers separately (see page E •296). The standard models come
with flexible, all stainless steel (Monel lined for oxygen service) pigtails
®
with armor casing. The CGA connection on each pigtail has a check
valve in the gland to prevent contamination and minimize purging
requirements.

Features and Benefits
n High Purity Diffusion n User Friendly Priority Valve n Check Valves in Inlet Gland n Modular Construction
Resistant Regulators One knob switches cylinder Designed to prevent Allows for easy installation, Section E – Gas Handling Equipment
Minimize the diffusion priority contamination and back flow modular design for a smaller
of air, no possibility of gas foot print
contamination

Specifications Materials
n Maximum Inlet Pressure n Outlet Pressure n Bodies n Seat
3000 psig (210 bar) 0-400 psig 5032B Series: brass barstock PCTFE
Gauge: 0-4000
n Diaphragms/Spring
Ports: 1/2" NPTF n Helium Leak Integrity 316 stainless steel n Seal ®
1 x 10 scc/sec
Teflon
-7
n Temperature Range n Weight
-40 °F to 165 °F 17.0 lb
(-40 °C to 74 °C)
n Flow
n Gauges Up to 5500 scfh
2" diameter brass or
stainless steel
Ordering Information – Series PRS5032-AB-CGA (Brass or 316 Stainless Steel)
A B C CGA
Material of Construction Assembly Delivery Pressure Pigtail
B Brass 0: Standard Assembly 1: 0-125
S Stainless Steel 1: Audio/Visual Alarm 2: 0-250 CGA
3: 0-500

1-877-PRAXAIR www.praxairdirect.com E•287