PVC-U Metric Pipes, Fittings & Valves Technical Information

PVC-U METRIC PIPE SYSTEMS

PVC-U (Unplasticised polyvinyl chloride) is one of the most popular thermoplastic materials used for pipework installations. Light in weight PVC-U has excellent resistance to chemicals and abrasion, is tasteless and odourless making it ideal for use with potable water systems and most food products as its extremely smooth bore gives excellent flow characteristics without sediment or deposit.

PVC-U is resistant to most solutions of acids, alkalis, salts and solvents.

Connections can be made by either solvent cement or BSP threaded fittings.

PVC-U Products are clearly identified by their dark grey colour.

WRAS Approval

PVC-U is approved by the Water Research Advisory Scheme (WRAS) for use with potable water.

Standards

PVC-U pipe is manufactured in accordance with EN1452-2

PVC-U fittings are manufactured in accordance with EN1452-3 and ISO161/1

Chemical Resistance

PVC-U has chemical resistance properties which are excellent being resistant to most solutions of salts, acids, alkalis and water soluble solvents. These products are NOT resistant to aromatic or chlorinated hydrocarbons.

For information on specific chemical resistance for PVC-U please contact our sales department on 0113 2491155 or email sales@epco-plastics.com.

PVC-U System Pressure/Temperature Relationship

Pressure ratings for plastic pipework systems are always quoted at 20 ° C, it is a fundamental principle of such systems that if the temperature is increased then the pressure rating must be reduced. PVC-U systems should never be used for temperatures in excess of 60 ° C. The following chart gives a rough guide as to the temperature/pressure relationship of PVC-U pipework systems.

	20 ° C	30 ° C	40 ° C	50 ° C	60 ° C
PN4	4.0 BAR	3.2 BAR	2.3 BAR	1.5 BAR	0.8 BAR
PN6	6.0 BAR	4.8 BAR	3.4 BAR	2.3 BAR	1.3 BAR
PN10	10.0 BAR	8.0 BAR	5.8 BAR	3.9 BAR	2.2 BAR
PN16	16.0 BAR	12.8 BAR	9.2 BAR	6.2 BAR	3.5 BAR

PVC-U Pipework Support Centres

In above ground installations it is essential to provide support to ensure that the weight of the pipe and its contents are adequately supported. The following recommended maximum spacings are for PVC-U pipes operating under the following conditions:

1) Fluid density of not more than 1g/cm cubed
2) PN10/PN16 pipe
3) Horizontal pipe runs

PIPE OD mm	20 ° C	30 ° C	40 ° C	50 ° C	60 ° C
	SPACING GIVEN IN METRES
16	0.80	0.70	0.50
20	0.90	0.80	0.60
25	0.90	0.80	0.60	0.50	0.40
32	1.00	0.90	0.70	0.60	0.40
40	1.20	1.10	0.90	0.70	0.50
50	1.40	1.30	1.10	0.80	0.60
63	1.50	1.40	1.20	0.90	0.70
75	1.60	1.50	1.30	1.10	0.80
90	1.80	1.70	1.50	1.20	0.90
110	2.00	1.90	1.70	1.40	1.10
125	2.10	2.00	1.80	1.60	1.20
140	2.20	2.10	1.90	1.70	1.40
160	2.40	2.30	2.10	1.80	1.50
180	2.50
200	2.70	2.40	2.30	2.00	1.70
225	2.80	2.60	2.40	2.10	1.80
250	3.00
280	3.20
315	3.40

For vertical pipe runs spacing should be increased by 30%.
For PN16 Pipe Support centres may be increased by 10%.

Cement Usage Recommendations

The following is an estimation of the number of joints likely to be achieved per litre of solvent cement.

OUTSIDE DIAMETER	NUMBER OF JOINTS	TYPE & SIZE OF BRUSH	NUMBER OF PEOPLE
6 - 12	300	3/16" Round	1
16 - 20	180	3/8" Round	1
25 - 32	100	1" Flat	1
40 - 63	50	2" Flat	1
75 - 90	20	2" Flat	2
110 - 125	10	2" Flat	2
140 - 180	8	2.1/2" Flat	3
200 - 250	3	3" Flat	3
250 - 315	2	3" Flat	3

For larger diameter installations we are able to offer 5 litre tins of slower setting solvent from stock.

PVC-U Metric Pipe Dimensions

PIPE O D (mm)	MAX W P	WALL (mm)	WEIGHT KG/M
6	16	1.00	0.025
8	16	1.00	0.035
10	16	1.20	0.045
12	16	1.40	0.055
16	16	1.50	0.110
20	10	1.10	0.150
	16	1.50	0.140
25	10	1.50	0.190
	16	1.90	0.220
32	10	1.60	0.250
	16	2.40	0.360
40	6	1.80	0.334
	10	1.90	0.360
	16	3.00	0.550
50	6	1.60	0.380
	10	2.40	0.570
	16	3.70	0.840
63	6	2.00	0.590
	10	3.00	0.890
	16	4.70	1.340
75	4	1.80	0.642
	6	2.30	0.810
	10	3.60	1.270
	16	5.60	1.900
90	4	1.80	0.774
	6	2.80	1.180
	10	4.30	1.820
	16	6.70	2.710
110	4	2.20	1.140
	6	2.70	1.450
	10	4.20	2.200
	16	6.60	3.320
125	4	2.50	1.470
	6	3.10	1.890
	10	4.80	2.830
	16	7.40	4.240
140	4	2.80	1.840
	6	3.50	2.400
	10	5.40	3.610
	16	8.30	5.390
160	4	3.20	2.380
	6	4.00	3.140
	10	6.20	4.700
	16	9.50	7.030
180	4	3.60	3.000
	6	4.40	3.870
	10	6.90	5.890
	16	10.70	8.890
200	4	4.00	3.700
	6	4.90	4.750
	10	7.70	7.300
	16	11.90	10.970
225	4	4.50	4.670
	6	5.50	6.000
	10	8.60	9.170
	16	13.40	13.900
250	4	4.90	5.650
	6	6.20	7.460
	10	9.60	11.360
	16	14.80	17.030
280	4	5.50	7.080
	6	6.90	9.310
	10	10.70	14.160
	16	16.60	21.330
315	4	6.20	8.950
	6	7.70	11.680
	10	12.10	17.960
	16	18.70	27.020
355	4	7.00	11.400
	6	8.70	15.010
	10	13.60	22.780
400	4	7.9	14.500
	6	9.8	18.820
	10	15.3	28.790
500	4	9.8	22.400
	6	12.3	29.400
630	4	12.3	37.510
	6	18.4	49.000
800	4	15.6	61.540
	6	23.3	88.650

Key:
N B = Nominal Bore
O D = Outside Diameter
W P = Working Pressure

PVC-U Metric Pipes, Fittings & Valves Technical Information

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