John Guest - The World Leader in Push-in Fittings, Pipe and Plastic Plumbing Systems

Technical Specification - Rigid Nylon Pipe

October 2004

NOTE: This specification refers to Rigid Nylon Pipe prefixed PA. Other fittings, valves, tube and ancillary products have their own Technical Specification.

Product Selection and Installation

John Guest fittings and related products are specifically designed and manufactured by John Guest to the Technical Specification set out in the John Guest Product Catalogues. All John Guest fittings and related products should be selected, installed, used and maintained in accordance with these Technical Specifications. It is the customer's/user's responsibility to ensure that John Guest fittings and related products are suitable for their intended applications, are properly installed and maintained and are used in accordance with the Technical Specifications. It is also the customer's/user's responsibility to provide its own customers with all relevant technical information about John Guest products it supplies them. If you have any questions about our technical specifications, please contact us.

For use with chemicals or other potentially aggressive liquids, please refer to our Customer Services Department.

Super Speedfit fittings and related products are not recommended for use with explosive gases, petroleum spirits, and other fuels or for central heating systems.

Pressure/Temperature rating - Nylon

The maximum working pressure for John Guest Rigid Nylon Pipe falls as the temperature increases.

WORKING TEMPERATURES AND PRESSURES
SIZE MM		MAXIMUM WORKING PRESSURE (BAR)
OD	ID	20°C	30°C	40°C	50°C	60°C	70°C	80°C-100°C
12	9	20	16	12	10	9	8	6
15	12	25	20	15	13	11	10	8
18	14	28	22	17	14	14	11	9
22	18	22	18	13	11	10	9	7
28	23	20	16	12	10	9	8	6

Burst Pressure approximately 3 times working pressure.

Maximum Working Temperature (Air) is 100°C.

Minimum Working Temperature (Air) is -30°C.

Maximum pressure rating for a system depends on the lowest rated component at working temperature.

John Guest fittings are typically rated at maximum 10 bar pressure which is below that of nylon pipe.

Tube Tolerances

12mm to 28mm

+0.05/-0. 10mm

Chemical Resistance

For use of with chemicals or potentially aggressive liquids, please refer to our Technical Service Department.

NOTE: When using cleaning agents or other potentially aggressive liquids, please ensure compatibility with tubing and fittings.

Warranty

Whilst we give a warranty against defects in manufacture or materials, it is the responsibility of the specifier to ensure that fittings and related products are suitable for their application. The installation must be carried out correctly in accordance with our recommendations, complying with recognised codes of practice and relevant national standards, and be properly maintained. Please refer to our terms and conditions of sale.

The company has a policy of continuous research and development and reserves the right to amend without notice the specification and design of all products. John Guest reserve the right to change the colour and shape of products. Photographs are for illustration purposes only.

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