The pipe ends should be cut square and all sharp edges and burrs must be removed.
The pipe surface must be clean and smooth with no loose material in the region of the
There must be no dents in the pipe ends must be within the limits specified for the coupling.
Mark half the width of the pipe coupling on both pipe ends as a fittin guide. This will enable the
coupling to be centred over the pipe ends when fitted.
Check that the coupling is of the right type and that a vacuum insert is fitted if required.
Remove the plastic packaging from the coupling.
Do not drop the pipe coupling.
Move one pipe end out of the way and slide the coupling over one pipe end. Repositin
the other pipe and slied the coupling over the joint into the correct position as shown
by the fitting marks alredy drawn on the pipes.
Tighten clamping bolts partially until the coupling is "nipped up" against the pipe. Do not
rotate the coupling on the pipe once the coupling is engaged.
Tighten clamping bolts evenly with a torque wrench to the final prescribed torque on the
final prescribed torque on the coupling label. Ensure that both bolts have reached torque
by moving from one to the other until both click off without further rotation.
Over- tightening is not recommendad and there is no need to re-tightening the bolts once
set as this will impede the "seating" of the gasket.
If in doubt always loosen the coupling, re-align and start again!
Ensure that there is no pressure in the pipes at the joint to be removed.
Drain the pipes at the joint as far as is practicable.
Protect yourself against spilling liquid.
Protect any surrounding equipment from spiied liquid.
Make sure the pipe coupling is not supporting the pipe ends.
Loosen locking bolts alternately but do not remove completely.
Do not rotate the pipe coupling on pipe as long as anchoring teeth are engaged (axilock only).
Loosen anchoring teeth engagement, if necessary, by gently rocking or tapping the loosened
coupling up and down the pipe (Axilock only).
Slide the coupling off the pipe.
Clean coupling and pipes ends and check the condition of the gasket before re-use.
3. Label Details
|7||Pipe outside diameter|
|10||Torque rating for tightening screws|
|11||Recommended maximum pipe gap|
St. = Alloy steel
StSt = stainless steel
CuNi = cooper nickel
All couplings have the torque rating printed on the label. Torques are based on standart
pipe properties.Torques may be adjusted up or down according to wall thickness and/ or
4.1. Coupling: Axilock-S
|Pipe O.D.(mm)||Torque (NM)|
4.2. Coupling : Axilock
|Pipe O.D.(mm)||Torque (NM)|
4.3. Coupling : Axilock-FP
|Pipe O.D. (mm)||Torque steel (NM)||Torque CuNi (NM)|
5. Electrical Conductivity
In Teekay pipe couplings electrical conductivity is conveyed through the coupling casing by the
anchor rings. In Teekay Axiflex pipe couplings stainless steel continuity strips are fitted to prevent
the build up of static electricity. These should be specifically reqested at time of order.
6. Shock, vibration, water hammer
Due to the design of the gasket, Teekay couplings dampen sound, vibration and water hammer.
Shock levels to military requirements can also be accommended. In the case of Teekay Axiflex
couplings for applications where excessive vibration might occur, it is recommended that the
couplings are supplied with central registers to locate the pipe coupling in position.
6. Central Register
For above ground applications where there is a possibility that the coupling may move along
the pipe due to excessive vibration, expansion and contraction etc. the Teekay Axiflex Pipe
coupling can be supplied with a central register. The cebtral register is a circumferential ridge
integral to the gasket and serves to locate the coupling on the pipeline, thereby preventing its
movement. ( This should be specifically requested at time of order).