Parker Triple-Lok and Triple-Lok 2
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Triple-Lok 37° Straight F87OMX
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Triple-Lok 37° Straight FBTX
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Triple-Lok 37° Nut, Sleeve, Locknut BTX
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Triple-Lok 37° Nut, Sleeve, Locknut TX
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Triple-Lok 37° Nut, Sleeve, Locknut WLN
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Triple-Lok 37° Straight HTX
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Triple-Lok 37° Straight LHTX
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Triple-Lok 37° Straight WTX
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Triple-Lok 37° Straight WTX-WLN
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Triple-Lok 37° Straight WBTX
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Triple-Lok 37° Straight WF5OX
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Triple-Lok 37° Straight WF5OX-WLN
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Triple-Lok 37° Straight WFTX
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Triple-Lok 37° Straight WFTX-WLN
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Triple-Lok 37° Straight WGTX
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Triple-Lok 37° Straight WGTX-WLN
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Triple-Lok 37° Straight XHX6
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Triple-Lok 37° Straight TRTXN
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Triple-Lok 37° Straight TRBTXN
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Triple-Lok 37° Straight TRTX
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Triple-Lok 37° Straight TRBTX
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Triple-Lok 37° Straight F5OX
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Triple-Lok 37° Straight FF5OX
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Triple-Lok 37° Straight XHB3
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Triple-Lok 37° Straight FTX
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Triple-Lok 37° Straight FFTX
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Triple-Lok 37° Straight GTX
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Triple-Lok 37° Flare - F4OMX
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Triple-Lok Flange 45° Flange Adapter XVQ1
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Triple-Lok 37° Straight Swivel HX6
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Triple-Lok Flange 45° Flange Adapter XVQ2
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Triple-Lok 37° Straight Swivel F65OX
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Triple-Lok 37° Straight Swivel F6X
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Triple-Lok 37° Straight Swivel G6X
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Triple-Lok Flange 90° Flange Adapter XEQ1
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Triple-Lok Flange 90° Flange Adapter XEQ2
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Triple-Lok Flange Straight Flange Adapter XHQ1
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Triple-Lok Flange Straight Flange Adapter XHQ2
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Triple-Lok 37° 45° Elbow WNTX
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Triple-Lok 37° 45° Elbow WNTX-WLN
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Triple-Lok 37° 45° Elbow WNBTX
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Triple-Lok 37° 45° Elbow V6X
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Triple-Lok 37° 45° Elbow V5OX
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Triple-Lok 37° 45° Elbow VTX
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Triple-Lok 37° 90° Elbow ETX
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Triple-Lok 37° 90° Elbow EBTX
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Triple-Lok 37° 90° Elbow WEBTX
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Triple-Lok 37° 90° Elbow WETX
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Triple-Lok 37° 90° Elbow WETX-WLN
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Triple-Lok 37° 90° Elbow C6X
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Triple-Lok 37° 90° Elbow C6BX
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Triple-Lok 37° 90° Elbow AOEX6
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Triple-Lok 37° 90° Elbow X6EF
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Triple-Lok 37° 90° Elbow C5OX
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Triple-Lok 37° 90° Elbow CC5OX
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Triple-Lok 37° 90° Elbow CTX
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Triple-Lok 37° 90° Elbow CBTX
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Triple-Lok 37° 90° Elbow CCTX
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Triple-Lok 37° 90° Elbow CCCTX
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Triple-Lok 37° 90° Elbow DTX
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Triple-Lok 37° 90° Elbow DBTX
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Triple-Lok 37° Tee JTX
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Triple-Lok 37° Tee JBTX
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Triple-Lok 37° Tee WJTX
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Triple-Lok 37° Tee WJTX-WLN
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Triple-Lok 37° Tee WJJTX
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Triple-Lok 37° Tee WJJTX-WLN
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Triple-Lok 37° Tee JX6
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Triple-Lok 37° Tee S6X
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Triple-Lok 37° Tee S6BX
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Triple-Lok 37° Tee R6X
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Triple-Lok 37° Tee R6BX
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Triple-Lok 37° Tee S5OX
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Triple-Lok 37° Tee R5OX
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Triple-Lok 37° Tee STX
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Triple-Lok 37° Tee SBTX
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Triple-Lok 37° Tee RTX
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Triple-Lok 37° Tee OTX
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Triple-Lok 37° Tee OBTX
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Triple-Lok 37° Tee MTX
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Triple-Lok 37° Tee MBTX
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Triple-Lok 37° Cross KTX
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Triple-Lok 37° Plug and Cap PNTX
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Triple-Lok 37° Plug and Cap FNTX
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Triple-Lok 37° Plug and Cap T22X
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Triple-Lok 2 37° Straight HTXO
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Triple-Lok 2 37° Straight F5OXO
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Triple-Lok 2 37° Straight FTXO
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Triple-Lok 2 37° Straight GTXO
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Triple-Lok 2 37° 90° Elbow C6XO
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Triple-Lok 2 37° 90° Elbow CTXO
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Triple-Lok 2 37° 90° Elbow C5OXO
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Triple-Lok 2 37° Tee JTXO
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Triple-Lok 2 37° Tee RTXO
How Triple-Lok Fittings Work
Tightening of the nut clamps the tube flare between the body nose (seat) producing a leak tight connection. This clamping on the 37° taper provides a measure of elasticity to the joint helping it to resist loosening under vibration. The clamping force results in a small radial load that tends to deform the fitting nose radially. The resistance of the nose to elastic deformation provides a constant preload (similar to a lockwasher) keeping it tight.
The clamping force provided by the nut resists the opposing force of the fluid under pressure. The joint remains leak tight as long as the clamping force is higher than the opposing pressure load. Properly assembled Triple-Lok fittings with appropriate tube will seal consistently under pressure until tube bursts.
Sealing in Triple-Lok fittings takes place between two smooth metal surfaces, the fitting nose and inside of the tube flare. Therefore, the sealing surfaces have to be smooth, free of any nicks, scratches, spiral tool marks, splits or weld beads. Seamless or welded and drawn fully annealed tube is recommended for Triple-Lok fittings for ease in flaring and bending. Certain types of harder tubes that are not fully annealed may not be suitable for flaring due to the potential for immediate or long-term cracking of the tube flare.
Triple-Lok 2
Triple-Lok 2 combines the versatility of stainless steel Triple-Lok with the added advantage of an elastomeric seal. It incorporates an O-ring that is positioned in the nose of the 37° flare so that elastomeric sealing occurs with the mating flared tube. Similar to the standard stainless steel Triple-Lok, Triple-Lok 2 consists of three pieces: the body (with O-ring), the standard Triple-Lok sleeve and standard Triple-Lok nut. The tube end is flared at a 37° angle (74° included angle) and held between the fitting nose and sleeve with the nut, providing a very effective elastomeric seal between the fitting nose and the tube flare.