Stainless Steel Products

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How to Order

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:

Example:
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
MNPT, FNPT Size
1
1/16"
2
1/8"
4
1/4"
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 Duolok
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

ME

Male Elbow

MT

Male Tee

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