Aroplus 2026-2027

PARKAIR ® ABS Pipe Fittings

ABS, which stands for acrylonitrile butadiene styrene, is a highly durable thermoplastic used in various industries, including food and beverage production, sewerage, and water treatments. This type of pipework system is known for its exceptional impact and chemical resistance, making it a popular choice for many applications. ABS is also non-toxic, meeting the toxicological requirements of the British Plastic Federation, British Biological Research Association Code of Practice for Food Usage 45/5, and EEC requirements for plastic materials in contact with foodstuffs. The system is lightweight, sturdy, and easy to install using solvent cement. ABS products are identifiable by their light grey colour. While ABS is resistant to a wide range of diluted inorganic acids, organic acids, salts, animal fats, and oils, it is not impervious to organic solvents, alcohol, petrol, acetic acid, or vegetable oils. Manufacturing Standards ABS products are generally manufactured to the following standards: Primeline pipe – BS5391 Part 1 Fittings – BS5392 Part 1 Threaded fittings – BS21, DIN2999, ISO7 Specifications Unless otherwise stated, ABS pressure fittings have the following pressure ratings: * All quoted at 20°C Solvent weld – 1/2” to 8” = Class E/15 bar 10” = Class D/12 bar Threaded = Class D/12 bar Pressure ratings for plastic pipework systems are quoted at a standard temperature of 20°C. If the temperature increases, the pressure rating must decrease accordingly. It is crucial to avoid using ABS systems for temperatures exceeding 70°C. Refer to the chart below to understand the relationship between pressure and temperature in ABS pipework systems.

16.0 14.0 12.0 10.0

Spacing Given in Metres

Dimensions in mm

Class E

20°C 50°C 70°C

Nominal Bore

Nominal Bore

Mean OD

Class D

Pipework Support Centres

Class C

3/8” 1/2” 3/4”

–

0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.8 2.0 2.1 2.3

0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.2 1.3 1.5 1.6 1.8

0.4 0.5 0.6 0.7 0.7 0.7 0.8 0.8 0.9 1.0 1.1 1.2 1.5

–

8.0 6.0 4.0 2.0 0

Tube NB, nominal bore or nominal pipe size

1/2” 3/4”

21.4 26.7 33.6 42.2 48.3 60.3 75.2 88.9

1”

1”

1 1/4” 1 1/2”

1 1/4” 1 1/2”

20

30

40

50

60

70

2”

2”

Temperature (°C) Maximum continuous working pressure (bar)

2 1/2”

2 1/2”

In above-ground installations, supporting ABS pipes and their contents is essential. The recommended maximum spacing for ABS pipes depends on the following operating conditions: 1. Fluid density of not more than 1g/cm 3 2. PN15 pipe 3. Horizontal pipe runs

3” 4” 5” 6” 8”

3” 4” 5” 6” 8”

114.3 140.2 168.3

219.1 For vertical pipe runs, spacing should be increased by 50%

13.65