INSTALLATION OF PVC FITTINGS

There are 5 types of joining methods in PVC materials.
  1. Combining with solvent adhesive
  2. Combining with Weld method
  3. combining with threaded connection
  4. Combining with gaskets
  5. Combining with flange
1.COMBINING WITH SOLVENT ADHESIVE
The accepted dimensions with regard to the shortest adhesive length are as follows.
YAPIŞTIRMA MUFLU BİRLEŞMELERDE MİNİMUM YAPIŞTIRICI BİRLEŞTİRME BOYU
d L (mm)
20 16
25 18.5
32 22
40 26
50 31
63 37.5
75 43.5
90 51
110 61
125 68.5
140 76
160 86
200 106
225 118
250 131
280 146
315 163.5
350 183.5
400 206

Boru kesme işlemi şekilde görüldüğü gibi 90º açı ile yapılmalıdır.

The pipe chamfering should be at 1-2mm interval for Ø20 - ø50 diameter range and 3-6mm interval for Ø63-Ø400 diameter range with an angle of 15º.
The surface to be glued should be cleaned with a solvent cleaner using a cloth or with a cleaning rag. If there are stains that do not come out with the cleaner, it should be sanded beforehand. The cleaning process should be applied to the joining surfaces on both parts to be joined and attention should be paid to that the surfaces get a matte image. Clean surfaces should not be contacted after cleaning.
BORU ÇAPLARINA GÖRE YAKLAŞIK TEMİZLEYİCİ KULLANIM MİKTARI
Anma Çapı Bir Birleştirme İçin İhtiyaç duyulan Temizleyici Miktarı (kg) Bir Kg Temizleyici İle Birleştirilebilecek Parça Sayısı
20 0.003 333
25 0.004 250
32 0.005 200
40 0.007 143
50 0.009 111
63 0.011 91
75 0.013 77
90 0.014 71
110 0.017 59
140 0.021 48
160 0.025 40
200 0.035 29
225 0.045 22
250 0.055 18
280 0.065 15
315 0.102 10
355 0.14 7
400 0.18 5
Uygulama öncesi yapıştırıcının koyuluk durumu kontrol edilmelidir. The adhesive should be in oil consistency and should not be too viscous or too dark. Glue should be used for bonding purposes. It should not be used in leaks or cracks.
Adhesive should be applied to the entire surface to be joined so that there is no space left. Adhesive application must be made on both surfaces to be joined and must be done with a brush suitable for pipe diameter.
RECOMMENDED BRUSH SIZES FOR APPLICATION
Rated Diameter Brush Type / Size
<32 mm <32 mm Ronde kwast dia. Round brush diameter. 8mm 8mm
40 - 63 mm 40-63 mm Platte kwast 1" Düz fırça 1 "
75 - 160 mm 75-160 mm Platte kwast 2" Düz fırça 2"
225 - 280 mm 225-280 mm Platte kwast 2½" Düz Fırçası 2 ½ "
> 315 mm > 315 mm Platte kwast > 3" Düz fırça> 3 "
BORU ÇAPLARINA GÖRE YAKLAŞIK TEMİZLEYİCİ KULLANIM MİKTARI
d Bir adet birleştirme için ihtiyaç duyulan yapıştırıcı miktarı (kg) Bir kg yapıştırıcı ile birleştirilebilecek parça sayısı
20 0.005 200
25 0.006 166
32 0.008 125
40 0.011 90
50 0.015 66
63 0.017 58
75 0.022 45
90 0.004 25
110 0.008 12
140 0.013 7
160 0.019 5
200 0.024 4
225 0.026 3
250 0.031 3
280 0.038 2
315 0.52 1
355 0.62 1
400 0.72 1
Yapıştırıcı sürdükten hemen sonra montaj yapılmalıdır. After the bonding, the remaining adhesive should be cleaned.
Two operators are recommended for cleaning and bonding for diameters over ø90mm.
The minimum waiting time after installation is 1 hour for each bar. Wait 24 hours for optimum adhesion.
The installation process should be carried out in a sufficiently ventilated environment between -5 to 30ºC. Otherwise, the appropriate adhesion may not be achieved.
During all these procedures, it should not be forgotten that the adhesive is a burning chemical, and fire/flame sources should be kept away.
2. COMBINING WITH WELDING METHOD
Welding is done with PVC electrodes. Two materials to be assembled are processed by filling electrodes with heat to the junction point.
In this application, the welding points should be clean and the surface should not be damp, oily, dusty or adhesive. There should not be sunburn spots in pipes. For this reason, the pipe and fittings must be checked before the process starts and if necessary cleaned or sanded.
Adhesive can be applied to the socket section of the surface to be joined before welding to increase the reliability of the bonding. In this application, which is known as the secret bonding method, the adhesive should not be contacted to the welding point in any way.
An appropriate welding machine nozzle must be selected for the welding application and the welding machine temperature must be adjusted according to the welding electrode and pipe size.

Welding method is an effective method that can be used in the production of auxiliary parts, collector manufacturing, and all joining methods. It can be used as an additional security enhancer for adhesion. However, if no suitable welding is made, it can produce results such as pipe deformation, additional part deformation, openings in welding sites, and burns in parts. Therefore, talent and experience are very important for this application. It is not recommended for installers who have not done this before.

3. COMBINING WITH THREADS

This method is the most commonly used type of assembly especially in metal insert parts.
This method is based on the combination of two threads that are compatible with each other, which is called a male and female. In this assembly, filling material must be placed between two parts.
The point to be considered in PVC threaded assembly is the amount of filling material.
Today, PTFE (Teflon) tapes are the most widely used filler material. In line with the increasing demand, there are many types of Teflon tapes in the market and the separation is determined according to the color of the Teflon tape box. According to the color of Teflon tapes, areas of use can be classified as follows.
White Packaging:
This is the one-density Teflon tape. It is used for NPT threads up to ¾ inch.
Yellow Packaging:
This is a double-density Teflon tape. It is the ideal filling material used in gas connections.
Red Packaging:
It is a three-density band.It is used for the & frac12; inch and above joints.
Green Packaging:
These are special oil-free Teflon tapes.They are used as welding oxygen and as bonding filler in medical oxygen lines.
Copper Color Packaging: These tapes contain copper granules. This band is used for special pipe and bolt connections.
It is important to do the Teflon tape application correctly, regardless of the type of Teflon tape used. Using a tape with the right thickness and feature increases application efficiency. In minimum tape winding the first round should be covered at a ratio up to 1/2 or 2/3. However, the correct thickness is the one that allows the parts to be squeezed at a level that does not leak. It is important to wrap the tape as tightly as possible.
4. COMBINING WITH GASKET
It is carried out by means of sealing the gasket placed in the gasket duct opening to the outer parts of the bellmouths. These gaskets are rubber and should not be contacted by chemical substances such as gasoline, acid or oil during storage or work. During storage, it is essential to protect the rubber from stresses that will disrupt its shape.
Gasket is attached to gasket slots at the end of the parts. After the gasket is placed, liquid soap is applied as a slider to the end of the part. (Oil is not used) two parts are combined by pushing along the bellmouth bed. In the meantime, the gasket in the bellmouth should be paid attention, the gasket should not be shifted.
5. COMBINING WITH FLANGE
Flange is used as a holder in flange joining and the sleeve is used as a connection element. A flat gasket should be used as a sealing element between the surface of the flange adaptır and the opposite surface. Here, it is important that flange adaptor and the adjacent surfaces should be smooth and be mounted in fully parallel with each other. Flanged Assembly is preferred especially due to its easy disassembling feature in large diameters. Without damaging the line, a piece between the two flange connections can be easily removed from the line. It is especially used for maintenance disassembly of large-scale parts, valves, and special elements when maintenance is required.
NOMİNAL PARÇA ÖLÇÜSÜ
KULLANILAN CİVATA ÖLÇÜSÜ
UYGULANAN KUVVET (NEWTON METRE)
20-25-32 M12 8-15
40-50-63-75-90-110-125-140 M16 15-41
160-200-225-250-315 M20 46-70
400-500 M24
Flanş montajında kullanılan civata sıkmada kullanılanacak kuvvetin çaplara göre durumu yukarıdaki tabloda belirtilmiştir.
Installation method is important in flanged assemblies. Bolts should be tightened with the following sequence. All force should not be applied in the first tightening. In the first round, the nut should be tightened up till it touches the flange, compression in the second round should be made with 50% of the total force to be applied, and in the third round, the part should be tightened with the nominal force. In addition to all these operations, the clamping force may vary according to the need. The minimum clamping force that will prevent leaking is sufficient for each assembly. This can be considered as a factor that reduces the risks by reducing the stress in the part.
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