BI-Lok Tube Fittings How to Order
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How to Order


  Ordering Information

BI-Lok®Tube Fittings are ordered by a part number listed in this catalog. The part numbering system is designed so that you can easily identify the type, configuration, size and material of the fitting. Using the example below, specify the fitting type, size designator, material and any additional options desired.

DCT
4-4
SS
*
|   |   |   |
Fitting Type   Size Designator   Material   Option

Type Description End Connection 1   End Connection 2
DAN AN 37° Flare Union Tube OD AN 37° Flare
DBA Plug Tube OD
DCA Cap Tube OD
DCB Male Pipe Weld Connector Tube OD Male Weld Pipe
DCM O-Ring Seal Male Connector for NPT Connection Tube OD Male NPT
DCO O-Ring Seal Male Connector for Straight Thread  Tube OD Straight Thread
DCT Male Connector Tube OD Male NPT/ISO
DCTZ Thermocouple Male Connector Tube OD Male NPT/ISO
DCU O-Ring Seal Male Connector for Straight Thread  Tube OD Straight Thread
DCUZ Thermocouple O-Ring Seal Male Connector for Straight Thread  Tube OD Straight Thread
DCW Tube Socket Weld Connector Tube OD Tube Weld
DHA Tube Stub to Male NPT Adapter Tube Stub Male NPT/ISO
DHC Tube Stub to Female NPT Adapter Tube Stub Female NPT/ISO
DLA Union Elbow Tube OD
DLB Male Pipe Weld Elbow Tube OD Weld Pipe
DLF Female Elbow Tube OD Female NPT/ISO
DLN Male Elbow Tube OD Male NPT/ISO
DLO Positional Male Elbow Tube OD Straight Thread
DLW Tube Socket Weld Elbow Tube OD Tube Weld
DNA Nut Tube OD
DNN Bulkhead Nut
DOB Back Ferrule Tube OD
DOF Front Ferrule Tube OD
DPC Port Connector Tube OD Tube Stub
DRE Reducer Tube OD Tube Stub
DREZ Thermocouple Reducer Tube OD Tube Stub
DSA Female Connector Tube OD Female NPT/ISO
DSC Bulkhead Male Connector Tube OD Male NPT/ISO
DSCZ Thermocouple Bulkhead Male Connector Tube OD Male NPT/ISO
DSE Bulkhead Reducer Tube OD Tube Stub
DSL Bulkhead Union Elbow Tube OD
DSS Bulkhead Female Connector Tube OD Female NPT/ISO
DSU Bulkhead Union Tube OD
DSUZ Thermocouple Bulkhead Union Tube OD
DTA Union Tee Tube OD
DTAZ Thermocouple Union Tee Tube OD
DTF Female Run Tee Tube OD Female NPT/ISO
DTH Female Branch Tee Tube OD Female NPT/ISO
DTI Tube Insert Tube OD Tube ID
DTK Male Run Tee Tube OD Male NPT/ISO
DTN Male Branch Tee Tube OD Male NPT/ISO
DTR Reducing Union Tee Tube OD Tube OD Tube OD
DUA Union Tube OD
DUAZ Thermocouple Union Tube OD
DUC AN 37° Flare Union Tube OD AN 37° Flare
DUE Bulkhead AN 37° Flare Union Tube OD AN 37° Flare
DUR Reducing Union Tube OD Tube OD
DURZ Thermocouple Reducing Union Tube OD Tube OD
DXA Union Cross Tube OD

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  Fitting Sizes (Tube End)

BI-Lok® Tube Fittings are available from 1/16” to 1” tube OD. Tube and pipe thread sizes are designated by the number of sixteenths of an inch as shown in the charts below. These numbers are used for the size designator portion of the part number. BI-Lok® nut is stamped with a tube size in fraction for easier size identification.

Tube Size BI-Lok® Part Size
1/16” 1
1/8” 2
3/16” 3
1/4” 4
5/16” 5
3/8” 6
1/2” 8
5/8” 10
3/4” 12
7/8” 14
1” 16

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  Fitting Sizes (Pipe Thread End)


Pipe Thread Size BI-Lok® Part Size
1/16” 1
1/8” 2
1/4” 4
3/8” 6
1/2” 8
3/4” 12
1” 16

Pipe threads are both NPT (National Pipe Threads, ANSI/ASME B1.20.1) and ISO Pipe Threads (ISO7-1). For ISO threads, add R before the part size. For example, 1/4 ISO pipe threads R4.

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  Fitting Sizes (Straight Thread End)


Straight Thread Size BI-Lok® Part Size
5/16-24 2
3/8-24 3
7/16-20 4
1/2-20 5
9/16-18 6
3/4-16 8
7/8-14 10
1-1/16-12 12
1-3/16-12 14
1-5/16-12 16
Straight threads are per ASME B1.1.

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  Configurations

Straight & Elbows: For tube unions with all ends the same, use only one size designator i.e. for 3/8" OD tube union elbow use DLA-6. For straights and elbows with different tube sizes, call out largest BI-Lok® tube end size first followed by the smaller BI-Lok® tube end or pipe thread size i.e. for 3/8" OD tube by 1/4" male straight connector DCT-6-4.


Tees & Crosses: For tees with all ends the same, use only one size designator i.e. for 3/8" OD tube tee, specify DTA-6. For drop size tees - first size the run (1 to 2) and then branch (3). i.e. for 3/8" OD tube on the run and 1/4" OD tube for the branch, specify DTR-6-6-4. For crosses all ends are the same i.e. for 1/2" OD tube cross, specify DXA-8.

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  Material

Add SS for 316 stainless steel or B for brass after the size designator.

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  Options

BI-Lok® front ferrule and back ferrules are available in 1Teflon® or Nylon. Add T for Teflon or N for Nylon. If the fittings are to be used for oxygen service, X must be added. We offer special cleaning and packaging for oxygen service BI-Lok® Tube Fittings.

* N - Nylon Ferrules
* T - Teflon® Ferrules
* X - Cleaned and packaged for Oxygen Service
* Metric / ISO Threads
* Special / Customized configuration

Please contact our customer service for more details.

        Phone:   (973) 838-6500
        Fax:       (973) 838-4888
        Email:    Contact us Form

1 Teflon® is a registered trade mark of DuPont.

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