duolok steel tube fittings materials steel duolok straight configuration tube fittings are machined from cold-finished bar stock in accordance with astm a-108 shaped bodies are machined from close-grained steel forgings with material in accordance with astm a-108 and astm a-576 operation through the critical interaction of precision-machined fitting components with the process tube a leaktight seal is achieved the simple geometric rotation of the duolok nut provides the axial thrust necessary to swage the ferrules to the outside diameter of the tube to eliminate any potential stress on an existing system the tube fittings have been designed to not transmit installation torque from the tube fitting to the tubing during the rotary movement of the nut the internal surface of the nut meets with the rear surface of the back ferrule to axially move the back ferrule forward against the rear angle of the front ferrule simultaneously the front ferrule is driven forward into the angular section
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duolok steel tube fittings the duolok pre-setting tool is used to pre-set the ferrules on the tubing for subsequent installation in a fitting body the pre-setting tool can be especially helpful when an installation must be made in a tight space or hard-to-work area the presetting tool allows the major portion of the installation work to occur in a more favorable work setting with only the completion of the installation in the hard-to-work area pre-setting instructions 1 secure the pre-setting tool in a vise 2 remove the protective nut and assemble the duolok nut and ferrules loosely to the pre-setting tool insert the tubing through the nut and ferrules until it bottoms in the pre-setting tool and then follow the standard duolok tube fitting installation instructions see figure #7a and #7b figure #7a 4 installation of the tubing with the pre-set duolok ferrules and nut in the appropriate fitting body can now be made by following the standard reassembly instructions see figure #9a and #9
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unilok steel tube fittings initial installation 1 unilok tube fittings come individually bagged and completely assembled for immediate use there is no need for disassembly prior to use simply remove the tube fitting from its bag insert the tube until it bottoms in the unilok tube fitting body and then hand tighten the unilok nut see figure #1 figure #1 figure #3 2 while holding the fitting body stable with a back-up wrench use a wrench to rotate the unilok nut to the fitting s original installation position approximately 1/4 turn from the hand-tight snug position then continue to tighten the unilok nut slightly see figure #5 figure #4 1-1/4 turns for sizes 1/4 1 back-up wrench figure #3 from original installation position tighten slightly tubing ends should be cut as straight as possible with all o.d and i.d burrs removed use of a tubing cutter or guide blocks with a hacksaw is recommended [note for extreme system applications using high pressures or requiring an extra factor of saf
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unilok steel tube fittings tube to male pipe male connector male elbow male branch tee male run tee male adapter mc 23 me 23 mbt 24 mrt 24 ma 25 tube to female pipe female connector union tube to tube union union elbow cap plug cap fc 26 u female elbow union tee 28 ue bulkhead union 28 cp 24 plug fe 26 ut female adapter reducing union 29 bu reducer/adapter 29 p 31 fa 27 ru 30 r 30 components nut ferrule n 31 f 31 13
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duolok steel tube fittings bftehp-pipe thread male adapter ma duolok part d4ma2 d4ma4 d4ma6 d4ma8 d6ma2 d6ma4 d6ma6 d6ma8 d8ma4 d8ma6 d8ma8 d8ma12 d12ma8 d12ma12 d12ma16 d16ma8 d16ma12 d16ma16 t tube o.d 1/4 1/4 1/4 1/4 3/8 3/8 3/8 3/8 1/2 1/2 1/2 1/2 3/4 3/4 3/4 1 1 1 p-npt male pipe size 1/8 1/4 3/8 1/2 1/8 1/4 3/8 1/2 1/4 3/8 1/2 3/4 1/2 3/4 1 1/2 3/4 1 b 1.25 1.46 1.49 1.71 1.32 1.53 1.56 1.78 1.75 1.78 2.00 2.00 2.06 2.06 2.33 2.41 2.31 2.60 e minimum opening 0.16 0.18 0.18 0.18 0.19 0.28 0.28 0.28 0.28 0.38 0.38 0.38 0.47 0.59 0.59 0.55 0.63 0.80 f min 0.38 0.56 0.56 0.75 0.38 0.56 0.56 0.75 0.56 0.56 0.75 0.76 0.75 0.75 0.95 0.95 0.75 0.94 h 7/16 9/16 11/16 7/8 7/16 9/16 11/16 7/8 9/16 11/16 7/8 1-1/16 7/8 11/16 1-3/8 1-1/16 11/16 13/8 union tee male adapter male run tee male adapter fittings allow any duolok tube fitting connection to be converted to connect to female npt 16 finger -tight assembly dimensions shown in inches are for reference only and subject to change when ord
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duolok steel tube fittings b-body h-body hex nut hex gtetgdcadc union u duolok part d4u d6u d8u d12u d16u t tube o.d 1/4 3/8 1/2 3/4 1 a 1.61 1.77 2.02 2.11 2.55 b 1.03 1.19 1.22 1.31 1.59 c 0.70 0.76 0.86 0.86 1.04 d 0.60 0.66 0.90 0.96 1.23 e minimum opening 0.19 0.28 0.41 0.62 0.88 g 9/16 11/16 7/8 1-1/8 1-1/2 h 1/2 5/8 13/16 1-1/16 1 3/8 nut hex h-wrench pad g t e bx dacat union elbow ue duolok part d4ue d6ue d8ue d12ue d16ue t tube o.d 1/4 3/8 1/2 3/4 1 a 1.06 1.20 1.42 1.57 1.93 bx 0.77 0.91 1.02 1.17 1.45 c 0.70 0.76 0.86 0.86 1.04 d 0.60 0.66 0.90 0.96 1.23 e minimum opening 0.19 0.28 0.41 0.62 0.88 g 9/16 11/16 7/8 1-1/8 1-1/2 h 1/2 5/8 13/16 1-1/16 1-3/8 finger -tight assembly dimensions shown in inches are for reference only and subject to change when ordering specify material designator with part number see page 3 for complete ordering information 19
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duolok steel tube fittings cap c duolok part d4cp d6cp d8cp t tube o.d 1/4 3/8 1/2 a 0.92 1.01 1.15 b 0.63 0.72 0.75 c 0.70 0.76 0.86 d 0.60 0.66 0.90 g 9/16 11/16 7/8 h 1/2 5/8 13/16 nut hex b-body body hex gthdca caps are used for capping the end of a tubing run cap installation instructions the standard duolok fitting installation instructions apply for proper installation of caps see page 6 plug p duolok part d4p d6p d8p t tube o.d 1/4 3/8 1/2 g t nut hex g 9/16 11/16 7/8 plugs are used to plug an unused port of a duolok tube fitting plug installation instructions 1 remove nut and ferrules from the port of the tube fitting body to be plugged and replace with the duolok plug 2 hand tighten the duolok plug and then while holding the tube fitting body steady with a back-up wrench use a wrench to tighten the duolok plug only 1/4 of a turn nut n duolok part d4n d6n d8n d12n d16n t tube o.d 1/4 3/8 1/2 3/4 1 g 9/16 11/16 7/8 1-1/8 1-1/2 l 0.50 0.56 0.69 0.69 0.81 t nut hex g l front f
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unilok steel tube fittings p-pipe thread bfteh male adapter ma unilok part u4ma2 u4ma4 u4ma6 u4ma8 u6ma2 u6ma4 u6ma6 u6ma8 u8ma4 u8ma6 u8ma8 u8ma12 u12ma8 u12ma12 u12ma16 u16ma8 u16ma12 u16ma16 t tube o.d 1/4 1/4 1/4 1/4 3/8 3/8 3/8 3/8 1/2 1/2 1/2 1/2 3/4 3/4 3/4 1 1 1 p-npt male pipe size 1/8 1/4 3/8 1/2 1/8 1/4 3/8 1/2 1/4 3/8 1/2 3/4 1/2 3/4 1 1/2 3/4 1 b 1.21 1.40 1.43 1.65 1.31 1.50 1.50 1.71 1.71 1.75 1.93 2.00 2.00 2.03 2.33 2.41 2.28 2.56 e minimum opening 0.12 0.13 0.14 0.14 0.19 0.24 0.24 0.24 0.28 0.33 0.33 0.38 0.47 0.51 0.59 0.55 0.62 0.75 f min 0.38 0.56 0.56 0.75 0.38 0.56 0.56 0.75 0.56 0.56 0.75 0.75 0.75 0.75 0.95 0.76 0.75 0.94 h 7/16 9/16 11/16 7/8 7/16 9/16 11/16 7/8 9/16 11/16 7/8 1-1/16 7/8 1-1/16 1-3/8 1-1/16 1-1/16 1-3/8 union tee male adapter male run tee male adapter fittings allow any unilok tube fitting connection to be converted to connect to female npt 25 finger -tight assembly dimensions shown in inches are for reference only and subject to change when
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unilok steel tube fittings b-body h-body hex nut hex gtetgdcadc union u unilok part u4u u6u u8u u12u u16u t tube o.d 1/4 3/8 1/2 3/4 1 a 1.61 1.77 2.02 2.11 2.55 b 1.03 1.19 1.22 1.31 1.59 c 0.70 0.76 0.86 0.86 1.04 d 0.60 0.66 0.90 0.96 1.23 e minimum opening 0.19 0.28 0.41 0.62 0.88 g 9/16 11/16 7/8 1-1/8 1-1/2 h 1/2 5/8 13/16 1-1/16 1-3/8 nut hex h-wrench pad g t e bx dacat union elbow ue unilok part u4ue u6ue u8ue u12ue u16ue t tube o.d 1/4 3/8 1/2 3/4 1 a 1.06 1.20 1.42 1.57 1.93 bx 0.77 0.91 1.02 1.17 1.45 c 0.70 0.76 0.86 0.86 1.04 d 0.60 0.66 0.90 0.96 1.23 e minimum opening 0.19 0.28 0.41 0.62 0.88 g 9/16 11/16 7/8 1-1/8 1-1/2 h 1/2 5/8 13/16 1-1/16 1-3/8 28 finger -tight assembly dimensions shown in inches are for reference only and subject to change when ordering specify material designator with part number see page 3 for complete ordering information
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unilok steel tube fittings cap cp unilok part u4cp u6cp u8cp t tube o.d 1/4 3/8 1/2 b 0.97 1.03 1.41 e minimum opening 0.11 0.24 0.33 f 0.74 0.80 1.02 v 0.37 0.50 0.62 g t h nut hex b-body body hex caps are used for capping the end of a tubing run cap installation instructions the standard unilok fitting installation instructions apply for proper installation of caps see page 10 d c a plug p unilok part u4p u6p u8p t tube o.d 1/4 3/8 1/2 g 9/16 11/16 7/8 nut hex t g plugs are used to plug an unused port of a unilok tube fitting plug installation instructions 1 remove nut and ferrules from the port of the tube fitting body to be plugged and replace with the unilok plug 2 hand tighten the unilok plug and then while holding the tube fitting body steady with a back-up wrench use a wrench to tighten the unilok plug only 1/4 of a turn nut n unilok part u4n u6n u8n u12n u16n t tube o.d 1/4 3/8 1/2 3/4 1 g 9/16 11/16 7/8 1-1/8 1-1/2 l 0.50 0.56 0.69 0.69 0.81 t nut hex g l ferrule f unilok
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ssp steel tube fittings stocked and supported locally by 8250 boyle parkway twinsburg ohio 44087-2200 telephone 330 425-3960 fax 330 425-8116 www.sspfittings.com accredited 34 100 made in the usa ilsdupc/000/06a
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