Installation Manual
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COMPRESSION SCREW FITTINGS.
Compression or Screw Fittings
Compression Fittings combine the positive feature of high reliability with a simple installation technique. The fittings do not require any special tools. The permanent pipe joint is achieved by compression i.e. by tightening the nut against the coned-shaped olive. The profiles of the two pieces are designed to cause a progressive shrinkage of the coned-shaped olive and to distribute the compression forces across the contact surface. A seal housing has been designed with a special slip-proof profile called O-rings that come into direct contact with the pipe. The simplicity and economic aspect of this system is based on the use of spanners, standardized threads (GAS ISO), which make it possible to connect with any system.
Advantages of Screw Fittings
* Developed with advance forging technique.
* Easy and convenient installation.
* Optimized structure design.
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INSTALLATION PROCEDURE & JOINTING INSTRUCTIONS:
Details of end preparation for jointing:
For jointing of UNIFLEX Pipes, the end preparation of pipe is very important. Use UNIFLEX Tools only for perfect end preparation. The details are as follows:
1.1. Step - 1 Cutting of Pipe
Always use UNIFLEX pipe cutter to ensure burr free cutting. It is necessary that the cut is always at the right angle. Hold the pipe as shown in the figure to ensure right angle cut. The cut of the pipe must be at right angle. Remove the nut and split ring from fitting. Inspect the ’O’ rings
Step 2 : Rounding and beveling
2.1. Round and bevel the end holes with UNIFLEX METAL / Plastic reamer / rounder. Push the pipe over the rounding tool, as shown. Rounding of the pipe end is essential. By using rounding tool, the end of the pipe is properly rounded. The dimensions of the end are properly formed so that perfect sealing takes place in case of external as well as internal sealing fittings.
Step 3: Sleeving
3.1. Choose the right size fitting according to the pipe, put the nut over the pipe, insert the compression ring over the pipe, make sure the mouth of the nut and the pipe faces the same direction. Place the nut and split ring over the pipe. Do not try to put nut and split ring over the pipe after beveling. Do not bend the pipe at the joint after completing the joint. Any bending operation should be completed before jointing. Minimum distance of 150 mm from joint should be maintained if pipe is to be bent after jointing.
3.2. Push the inserts into the pipe up to the shoulder, take care not to damage the O-ring. Insert the pipe fully inside the groove over the insert. Check that the pipe goes over smoothly without damaging the ’O’ rings. Do not leave any gap when pipe is inserted inside the groove. Don't apply any lubricating medium such as oil or grease to pipe or fitting. With proper beveling the pipe will go easily. Push the split ring until it sits inside the tapered portion provided in the fitting. Don't keep the split ring away from the fitting.
Step 4: Tightening the Nut
4.1. Tighten the nut fully using spanner of proper size over the fitting. Don’t leave the nut without spanner tightening. Hand tightening is not sufficient for proper joint. Tightening should not be excessive. If spanner starts slipping, stop tightening
