Page 276 - Praxair - Specialty Gases and Equipment Reference Guide

4448 Regulators

Vaporizing Regulator

4448 Series Vaporizing Regulator
The 4448 Series regulators are designed for heat and
vaporized media before and after pressure reduction.
The 4448 Series is classified to meet Class 1, Groups B,
C, and D code requirements.

Typical Applications
n Hydrocarbon Sampling
n Fluid fractionalization
n Pre-heat process fluids

Features and Benefits
n Multi-turn adjustment n Two Standard Models
Allows high resolution Available
temperature Electrically heated and steam
n Durability n Stainless Steel
Handles temperatures well Construction
High corrosion resistance

Specifications
n Maximum Inlet Pressure n Media Operating
3500 psig Temperature*
-15 °F to 450 °F
n Outlet Pressure Ranges
0-25, 0-50, 0-100, 0-250, (-26 °C to 232 °C)
0-500 psig n Ambient Operating
Temperature Range
n Operating Steam Pressure
200 psig -40 °F to 450 °F Section E – Gas Handling Equipment
(-40 °C to 232 °C)
n Operating Temperatures
Series 4448S – Steam n Cv
maximum at 400 °F (204 °C) .06
Series 4448E – Electrical n Electric Heating Unit
150W; up to 450 °F (232 °C) 150W (120 or 240 VAC with
50W; up to 350 °F (177 °C) thermostat (optional 50W with
thermostat, CSA approved)
* Warning: Some media may not be safe at high temperatures.
For extended temperature applications, please contact factory.

Materials
n Body n Spring
316 stainless steel Elgiloy
®
Monel is available upon request
®
n Wetted Parts
n Seat 316 stainless steel
Vespel
®
n Diaphragm
Elgiloy
®
Ordering Information – Series PRS4448ABC
A B C
Model Outlet Pressure Heating Method
PRS4448 1: 0-25 psig 1: Steam
2: 0-50 psig 2: Electric 120 (VAC)
3: 0-100 psig 3: Electric 240 (VAC)
4: 0-250 psig
5: 0-500 psig

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