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How to Order - TruFit Pipe & Weld Fittings

TruFit tube fittings are ordered by specifying part numbers as listed in this catalog. The TruFit part numbers are easy to understand, and describe tube fittings that are completely assembled and ready to be installed. The following explains the part numbering system:

ISS
D 4 MC 2  
Instrumentation
Material Designator
(See Chart 1)
SSP Brand Designator
D = Duolok 
Instrumentation quality tube fittings
Tube O.D. expressed in sixteenths of an inch
(See Chart 2)
Type of Tube Fitting Designator (See Chart 3)  2nd end connection, expressed in sixteenths of an inch, is required for a reduced size tube O.D. or a differing type of end connection such as MNPT, FNPT, etc.
(See Chart 2) 
 For special application tees, a 3rd end connection is required for a reduced size tube O.D. or a differing type of end connection such is MNPT, FNPT, etc. expressed in sixteenths of an inch
(See Chart 2)

 

Chart 1
Instrumentation Material Designator
Material
IB Brass
ISS 316 Stainless Steel
ICS Carbon Steel
IM Monel®

 

Chart 2: Part # Size Designators
Size Designator
Tube O.D. or MNPT, FNPT Size
1 1/16"
2 1/8"
3 3/16"
4 1/4"
5 5/16"
6 3/8"
8 1/2"
10 5/8"
12 3/4"
16 1"

Notes:

All Configurations:
Only one size indicator is necessary when all of the connections are the same type and size.

Straights and Elbows: Specify the largest tube end first followed by the smaller tube end or differing type of connection (MNPT, FNPT, etc.).

Tees and Crosses:
Tees are described by first sizing the run (1 to 2) and then the branch (3). Crosses are described by first sizing the run (1 to 2) and then the branch (3 to 4). See Figure 1.

Specials: SSP Instrumentation manufactures a wide variety of special application tube fittings. Contact your local distributor for details regarding availability of special tube fitting configurations, materials and sizes.

 

Chart 3
Type of Fitting Designator
Description of Unilok
Tube Fitting Types
A Adapter
BT Branch Tee
CN Close Nipple
E Elbow
E45 Elbow 45°
HGC Hex Coupling
HLN Hex Long Nipple
HN Hex Nipple
HRCG Hex Reducing Coupling
HRN Hex Reducing Nipple
HHP Hollow Hex Plug
FBT Female Branch Tee
ME Male Elbow
PCP Pipe Cap
PCS Pipe Cross
PP Pipe Plug
PT Pipe Tee
RA Reducing Adapter
RB Reducing Bushing
RSE Reducing Street Elbow
SE Street Elbow
SE45 Street Elbow 45°
ST Street Tee