grp pipe adhesive coupling installation

7/28/2019 GRP Pipe Adhesive Coupling Installation

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Faratec Pipe, Glued Coupling Installation Procedure Page 1 of 7 Version 1 rev 0, June 2010

Faratec Pipe, Glued Coupling Installation Procedure

Introduction:Glued coupling joints designed and approved in FARATEC technology centre are made by glass

reinforced plastic (GRP) pipes and produced in FARASSAN manufactory according to continues

winding method. This kind of joints designed for Biaxial and above ground applications and

recommended for more than 300mm of diameter sizes.A glued coupling is longer than a REKA coupling and has four grooves which grinded for gaskets seats

and two grinded surfaces between of this grooves that after installation jointed to the pipe by the glue.

Before transporting of this pipes one coupling installed on a side of each pipe in the factory, same as

uniaxial pipes and REKA couplings, but usually glue dont injected and its need to fill by adhesive at the

installation site.

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Installation tools

Four gasket for each coupling Belt & Come along jack

Grinder Air compressor, Air filter and regulator&Injection vessel

Fit pin& Hummer Acetone& cloth Wrench



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-Preparation of installation

Glued coupling has no stopper in middle so it needed to be immovable on the pipe by something like

clamp that tide on the pipe right by the coupling. Recommended that before installation of pipes,adhesive injected into the installed side of coupling.

As told if installed side of coupling does not fill by adhesive suggested that inject the glue according to

procedure A and if it has done in the factory you can install the other side according to procedure B.

A-Adhesive injection into the coupling

A.1: For glue injecting surfaces of ends of pipe and between of grooves at inside of coupling should begrinded and cleaned. Before than anything infuse acetone into the holes of installed side of coupling to

clean the surfaces.

A.2: Connect an air filter and regulator to the outline of air compressor, as output air flow beadjustable and also dehydrated and then connect them to the injection vessel input. Use a suitcase

flexible tube to can connect the outline of vessel to the coupling holes simply.Recommended use pneumatic tube and connections for outline of vessel as tube seats into the coupling

holes and no leakage exist.

A.3: Prepare the glue according to the adhesive procedure and adjust its gel time from 45 to 60 minutes.

Put the pitcher of prepared glue into the injection vessel and tide the door of vessel.

A.4: Put the pipes on some same thickness woods and check that enough space exists for working (at

least 10cm) under the coupling then twist the pipe to one of couplings holes move to top of coupling.

This hole will use for vent of air.

A.5: Open compressors valve and let to compressed air to push the glue from injection vessel to out

of tube. Adjust air flow by regulator to take to good rate of glue, check that air dont issues with glue,

now insert output tube into the undermost hole and hold it by hand.



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A.6: Glue is filling free space of between of gaskets and is coming up inside of coupling. Check the other

holes and wait. When glue comes out from each ones of holes insert a pin and hit it by hummer to seals

the leakage. Repeat this way for other holes. When see glue issues from last hole (the top hole) wait to

maker sure all of air comes out and then seal the hole.

A.7: Close the valve and remove the tube from the coupling and seal it by pin. Injection of glue now is

completely done.



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B-Pipe installation

B.1: Prepare the adhesive injection tools before than pipe installation started.

B.2: Use grinder to grind end of pipe surface as, just a thin layer of surface removed only. Apply

grinding for inside of coupling, on between of grooves.

B.3: Clean the grinded surfaces by cloth and acetone.



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B.4: Put the gaskets in the grooves like REKA coupling gaskets and make sure that gaskets dont

wrinkle.

B.5: String the pipes along of the way as end of each pipe sit in foreside of the coupling.



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B.6: Prepare adhesive according to A.3 and daub it on the gaskets and grinded surface of pipe.

NOTE1: Glue in this type of joints use as lubricant as told. Never use another lubricant for

installation.

B.7: Bring some belts and tide them on the pipes and use one or two come along jack to connect the

belts and pull them together. By keeping of jacking pipe will arrived to coupling and pipe will insert tothe coupling. Stop jacking when pipes tangent together.

NOTE2: After that pipes contact together stop jacking. Jacking will damage pipes.

NOTE3: Suggested that draw a line around the pipe which has half of coupling length distance fromend of pipe. When see the line by the coupling stop jacking.

B.8: Inject the prepared glue into the second side of coupling immediately, according to procedure A.5

to A.7, after installation and before than daubed glue on the pipe cured.

NOTE4: Hydrostatic pressure can applied after than at least 12 hours from injecting.

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