Page 292 - Praxair - Specialty Gases and Equipment Reference Guide

Gas Delivery Systems

High Flow Switchover for Non-Corrosive Service

™
ProSpec 5033 Gas Delivery Systems
High Flow/High Purity Switchover System
The 5033B and 5033S Series high flow/high purity changeover
systems are designed to provide continuous supply of high purity
gases to the laboratory, process or instrument. The 5033 Series
incorporates two regulators set at different delivery pressures,
and a primary outlet pressure regulator.
Basic Functional Description
When primary supply to the changeover (primary) is consumed,
the secondary supply (reserve) feeds the downstream process.
By turning the regulator lever counter 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 5033 Series are used with liquid dewars. 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 help
prevent contamination and minimize purging requirements.

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

Specifications
n Maximum Inlet Pressure n Helium Leak Integrity
3000 psig (210 bar) 1 x 10 scc/sec
-6
Gauge: 0-4000
Ports: 1/2" NPTF n Weight
10.0 lb
n Temperature Range n Cv
-40 °F to 165 °F 1.8
(-40 °C to 74 °C)
n Flow
n Gauges up to 5500 SCFH (air)
2" diameter brass
n Outlet Pressure Ranges
0-125 psig
0-250 psig
0-500 psig
Materials Ordering Information – Series PRS5033-ABC-CGA
n Bodies n Seal A B C CGA
Brass barstock PTFE Material of Outlet Pressure Assembly Pigtail
Construction
n Diaphragms/Spring n Filter
316 stainless steel 10 micron B: Brass 0: 0- 125 psig 0: Standard Assembly Please
S: Stainless 1: 0-250 psig 1: Audio/Visual Alarm specify
n Seat
PTFE Steel 2: 0-500 psig CGA

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