Page 335 - Praxair - Specialty Gases and Equipment Reference Guide

Purifiers/Filters

In-Line Filters

High Pressure, High Purity, Stainless Steel
In-Line Filters Models SG6112, SG6113, SG6114
These in-line filters have a pleated wire mesh element which is
easily cleaned by flushing the filter in the opposite direction to
normal flow. Flow may be in either direction. All metal welded
construction makes these filters ideal for use in high purity and
ultra high purity gas systems. SG6112/13 Filter SG6114 Filter

Specifications
n Maximum Operating n Pressure Drop n Pressure Drop n Dimensions
Pressure: 6000 psig (to atmosphere) (to atmosphere) SG6112 and SG6113:
n Operating Temperature SG6112: SG6113 and SG6114: 1-3⁄4" x 1" hex
Range: -320 °F to +900 °F 10 psi at 156 slpm Air 10 psi at 140 slpm Air SG6114: 2-1⁄32" x 1" hex
n Maximum Differential 50 psi at 433 slpm Air 50 psi at 389 slpm Air n Approximate Weight
Pressure: 100 psi 100 psi at 768 slpm Air 100 psi at 691 slpm Air 4 oz
Materials Ordering Information
n Body n Pleated Mesh Element Part Number Inlet and Outlet Connections* Nominal Filtration Rating
Type 316 Stainless Steel SG6112: Type 316 Stainless PRXSG6112 1⁄4" MPT by 1⁄4" FPT 15 micron
n Retainer Screens Steel PRXSG6113 1⁄4" MPT by 1⁄4" FPT 2 micron
Type 316 Stainless Steel SG6113 and SG6114: PRXSG6114 1⁄4" male VCR (both ends) 2 micron
®
Type 304 Stainless Steel

High Pressure, Brass In-Line Filters (Models SG6120, SG6121, SG6122)
These in-line filters feature a sintered 316 stainless steel element
which is easily removed for cleaning or replacement making these
filters convenient for use upstream of pressure regulators. These SG6120 Filter
filters will protect a regulator from particulate contamination which
can build up and eventually cause seat leakage and regulator failure.
Specifications Materials
n Maximum Operating n Dimensions n Body n Seal
Pressure: 3000 psig 2-1/4" x 3⁄4" hex Brass Viton ®
n Operating Temperature n Approximate Weight: 3 oz n Spring, Element and Gasket
Range n Connections Type 316 Stainless Steel
-15 °F to + 400 °F 1/4" FPT (in) x 1/4" FPT (out)
Ordering Information Optional Equipment – Replacement Element (Includes Seal and Spring)
Section E – Gas Handling Equipment
Part Number Nominal Filtration Rating Part Number Description
PRSSG6120 10 micron PRSSG6120R 10 micron
PRSSG6121 5 micron PRSSG6121R 5 micron
PRSSG6122 1 micron PRSSG6122R 1 micron

Low flow, 2-Micron, In-Line Filters (Models FM4741, FM4746)
Models FM4741 and FM4746 in-line filters feature a sintered
stainless steel element with a 2 micron filtration rating. The
element is easily removed for cleaning. Model FM4741, with an FM4741 Filter
aluminum housing, is designed for non-corrosive gas service.
The FM4746, with a Type 316 stainless steel housing, is suitable
for corrosive service. The 1⁄8" NPT inlet and outlet connections
make these filters convenient for use in conjunction with many of
Praxair’s variable area flowmeters.

Specifications Materials Ordering Information
n Filtration Rating n Filter Element Part Number Body Maximum Operating Temperature
2 micron Type 316 Stainless Steel Pressure at 70 °F
n Dimensions n Spring PRSFM4741 Aluminum 3500 psig 180 F
o
2-13/32" x 1/2" hex Type 302 Stainless Steel PRSFM4746 Type 316 5000 psig 350 F
o
n Approximate Weight n Seals Stainless Steel
1.5 oz Viton ®
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