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UNIFLEX FEATURES
UNIFLEX
Carbon/
Stainless Steel
Pipe Couplings
Pressures To 3000 PSIG
Temperatures to 850°F
Reduced Labor Costs
No need to replace union housing or spring
pipe during make-up or disassembly which
reduces time by more than 60%.
Reduced Cost of Materials
Only a change of gasket is required
when disassembled.
Reduced Dollars in Inventory
Only a few gasket kits required.
Components may be stocked and
replaced individually because
mated parts are not needed.
Components Interchangeable
All components within each size
class are fully interchangeable.
End connections can be
socket weld, threaded or
a combination of both.
Reduced Energy Costs
Spiral wound gasket assures
long life and leak tight seal.
Accepted where Standard
Unions are Inadequate
Seal equivalent to flange connections
meets fugitive emissions needs.
Suitable for Most Services
Carbon steel and 316L stainless steel
housings and a variety of gasket materials
available to meet demands of most applications.
No Welding Damage to Seal
Because seal is installed after welding, the danger
of damaging seal is eliminated.
Sizes to Meet Most Requirements
Available in
1
/2" to 2", socketweld or threaded for a
wide variety of piping needs.
●Steam Systems (up to 1500 PSIG superheat)
●Dowtherm
●Process Fluids & gases to 3000 PSIG CWP
(ie: Acids, Caustics Nitrogen, etc.)
●Manifolds on Steam Traps, Valves, Pumps
& Compressors
●Nuclear Power Plants
●Hydraulic Fluids/ Hot Oils
Applications
Meets MSS-SP-83 for 3000 pound unions.
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UNIFLEX COUPLINGS
The Uniflex Pipe Coupling (SUA) has successfully
solved frequent leakage, intensive maintenance
and stocking difficulties associated with ground
joint-pipe unions.
The SUA is a modified forged steel or stainless
steel pipe union utilizing a Spiral-Wound Gasket
to provide a leak-tight joint. This design, similar in
principle to flange joints, has been proven in the field for
many years. Because the joint seal is formed by the
replaceable gasket (not a ground joint finish), failures
caused by poor mating surfaces are eliminated.
Components may be stocked and replaced individually
because mated parts are not required for sealing.
UNIFLEX
STEEL/STAINLESS PIPE COUPLINGS
Pressures To 3000 PSIG (207 barg)
Temperatures to 850°F (454°C)
No Energy Losses — from expensive steam and process
fluid leaks. A spiral-wound gasket ensures a leak-tight seal.
Lower Maintenance/Labor Costs — Replacement of the
union housing is eliminated. Only a change of gasket is
required when the Uniflex Coupling is disassembled. No
need to spring the pipe during make-up or disassembly. It
is less costly to make and break than flanges.
Lower Inventory Costs — Only a few Uniflex Pipe
Couplings and gasket kits in each size are required to back
up installations. One Uniflex satisfies all pressure series of
flanges in pipe sizes 1/2" to 2".
Ease of Installation — The gasket is held firmly in place
with a patented retainer. There is no danger of damaging
the seal during installation as it is fully protected from
overtorquing.
Welded Piping Systems — With the gasket removed while
welding coupling into the piping, the danger of damaging
the seal is eliminated. Costly removal of sections of pipe to
replace leaky unions is eliminated.
Component Interchangeability — All components of the
Uniflex Couplings, in each size class, are fully interchangeable. End connections can be socket weld, threaded, or a
combination of both.
MODELS
●
SUA-T–Threaded Carbon Steel
●SUA-SW–Socketweld Carbon Steel
●SUASS-T–Threaded Stainless Steel
●SUASS-SW–Socketweld Stainless Steel
●SUG–Gasket Kit includes 10 gaskets.
●SUGR–Gasket Kit includes 10 gaskets and 10 retaining
rings
Call or visit our website for FREE sample and cost
savings spreadsheet.
APPLICA TIONS
●
Steam Systems–up to 1500 PSIG Superheat
●Dowtherm
●Variety of process fluids and gases to 3000
PSIG CWP, i.e.: Acids, Caustics, Nitrogen,
etc.
●Steam Trap, Valve, Pump & Compressor
Manifolds
●Nuclear Power Plants
●Hydraulic Fluids/Hot Oils
OPTIONS
●
Teflon Gasket Filler
●Type 347 SS, Type 316 SS, Monel, Inconel
600, Hastalloy, Nickel Gasket Windings
(other materials available on request)
Canadian Registration # 0A0583.9C
NUT
MALE
END
GASKET
WITH
RETAINER
FEMALE END
OPERA TION
Installation Tip: Use UNIFLEX in all Regulator and Trap Stations
through 2" to simplify future changeouts.
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UNIFLEX COUPLINGS
Uniflex Model SUA-SW
C
Connections:
1/2"-2" NPT or socketweld
Union shall be of the straight-through design with
connections oppositely aligned, suitable for either
horizontal or vertical piping installations. Union shall
meet standards of MSS SP-83 for 3000 lb. unions.
Connections shall be either screwed or socketweld
and union shall have threaded nut. Gasket shall be
of the spiral wound design and a retainer shall be
utilized to locate and hold gasket during installation.
Union housing shall be forged steel ASTM A105
and have a pressure rating of 3000 PSIG at 100°F
or type 316L stainless steel and have a pressure
rating of 2430 PSIG at 100°F. Gasket winding shall
be type 304 stainless steel with filler material of
graphite. Gasket retainer shall be of type 316
stainless steel.
MAXIMUM
OPERA TING CONDITIONS
PMO: Max. Operating Pressure see Chart
TMO: Max. Operating Temperature see Chart
M
ATERIALS OF CONSTRUCTION
Housing: Forged Carbon Steel, ASTM-A-
105 or Type 316L SS
Gasket: Spiral wound 304 Stainless
w/graphite filler
Gasket Retainer: Type 316 Stainless Steel
Dimensions
Pipe Inches (mm)
Weight
Size A B C Lbs (kg)
1
/2" 2.0 1.8 .9 0.8
(51) (46) (24) (.36)
3
/4" 2.2 2.2 1.1 1.2
(56) (56) (29) (.55)
1" 2.4 2.6 1.1 1.6
(62) (65) (29) (.73)
11/
4" 2.8 3.0 1.4 2.5
(71) (77) (35) (1.2)
11/2" 3.0 3.4 1.5 3.3
(76) (86) (38) (1.5)
2" 3.4 4.1 1.6 4.7
(86) (103) (41) (2.2)
Temperature/Pressure Ratings†
Temperature
Pressure (PSIG) Pressure (PSIG)
Carbon Steel 316L SS
100°F 3000 (-20°F*) 2430 (-325°F*)
200°F 2735 2050
300°F 2655 1835
400°F 2565 1670
500°F 2425 1545
600°F 2220 1460
700°F 2155 1390
800°F — 1330
850°F — 1300
Average weights listed–actual weights may vary slightly
*Minimum recommended temperature
†For 3000 lb. unions from MSS SP-83.
Uniflex Model SUA-T
A
B
NPT
UNIFLEX
STEEL/STAINLESS PIPE
COUPLINGS
SPECIFICATION
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