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For Cold Potable Water
BS 3505 : 1986

National Plastic produce a range of uPVC pipes, strictly in accordance with BS 3505 : 1986 standard on dimensions, material and workmanship. The pipe is manufactured from 100% virgin unplasticized PolyVinyl Chloride compound. No re-worked material is used. The pipe is produced under an ISO 9002 Quality Assurance System.

Pressure Classification

BS 3505 : 1986 pipe rating is based on a maximun sustained working pressure at 20°C. As temperature increases, burst strength of uPVC pipe decreases. The pressure rating will be 2% lower for every 1°C above 20°C. As specified by the British Standard Institue for BS 3505 : 1986, uPVC pressure pipes are not recommended for use where temperature are above 60°C. Appropriate derating factors must be taken into consideration during design of any pipe system.


Class C (9 Bar)

Nominal
Size
Outside
Diameter
Wall
Thickness
NP
Product Code
Inch
Min.
mm
Max
mm
Min.
mm
Max.
mm
Plain
Ends
Solvent
Socket
Joint
Rubber
Ring
Joint
2
60.0
60.7
2.5
3.0
-
C-2
-
3
88.4
89.4
3.5
4.1
-
C-3
C-3R
4
113.7
114.9
4.5
5.2
-
C-4
C-4R
5
139.4
141.0
5.5
6.4
-
C-5
-
6
167.4
169.1
6.5
7.6
-
C-6
C-6R
8
218.0
220.2
7.5
9.0
-
C-8
C-8R
10
271.6
274.4
9.7
11.2
-
C-10
C-10R
12
322.2
325.5
11.5
13.3
-
C-12
C-12R
14
353.7
357.3
12.6
14.5
-
C-14
C-14R
16
404.3
408.5
14.5
16.7
-
C-16
C-16R


Class D (12 Bar)

Nominal
Size
Outside
Diameter
Wall
Thickness
NP
Product Code
Inch
Min.
mm
Max
mm
Min.
mm
Max.
mm
Plain
Ends
Solvent
Socket
Joint
Rubber
Ring
Joint
1 1/4
42.0
42.4
2.2
2.7
-
D-125
-
1 1/2
48.0
48.5
2.5
3.0
-
D-2
-
2
60.0
60.7
3.1
3.7
-
D-2
-
3
88.4
89.4
4.6
5.3
-
D-3
D-3R
4
113.7
114.9
6.0
6.9
-
D-4
D-4R
5
139.4
141.0
7.3
8.4
-
D-5
-
6
167.4
169.1
8.8
10.2
-
D-6
D-6R
8
218.0
220.2
10.3
11.9
-
D-8
D-8R
10
271.6
274.4
12.8
14.8
-
D-10
D-10R
12
322.2
325.5
15.2
17.5
-
D-12
D-12R
14
353.7
357.3
16.7
19.2
-
D-14
D-14R


Class E (15 Bar)

Nominal
Size
Outside
Diameter
Wall
Thickness
NP
Product Code
Inch
Min.
mm
Max
mm
Min.
mm
Max.
mm
Plain
Ends
Solvent
Socket
Joint
Rubber
Ring
Joint
1/2
21.2
21.5
1.7
2.1
E-05P
-
-
3/4
26.6
26.9
1.9
2.5
E-075P
-
-
1
33.3
33.8
2.2
2.7
E-1P
-
-
1 1/4
42.0
42.5
2.7
3.2
-
E-125
-
1 1/2
48.0
48.5
3.1
3.7
-
E-15
-
2
60.0
60.7
3.9
4.5
-
E-2
-
3
88.4
89.4
5.7
6.6
-
E-3
E-3R
4
113.7
114.9
7.3
8.4
-
E-4
E-4R
5
139.4
141.0
9.0
10.4
-
E-5
-
6
167.4
169.1
10.8
12.5
-
E-6
E-6R
8
218.0
220.2
12.6
14.5
-
E-8
E-8R
10
271.6
274.4
15.7
18.1
-
E-10
E-10R
12
322.2
325.5
18.7
21.6
-
E-12
E-12R



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Pressure Pipe