BS EN ISO 16135:2006 pdf free.Industrial valves — Ball valves of thermoplastics materials.
This International Standard specifies requirements for the design, functional characteristics and manufacture of ball valves made of thermoplastics materials intended for isolating service, for control service, and to divert/mix fluids, their connection to the pipe system, the body materials and their pressure/temperature rating between – 40 °C and + 120 °C, for a lifetime of 25 years, and also specifies their tests.
This International Standard is applicable to hand- or power-operated valves to be installed in industrial pipe
systems, irrespective of the field of application and the fluids to be conveyed.
NOTE 1 Industrial pipe systems also include systems for water supply for general purposes, drainage and sewerage.
NOTE 2 Special requirements can apply to pipe systems for water for human consumption.
This International Standard is concerned with the range of DN
DN 8, DN 10, DN 15, DN 20, DN 25, DN 32, DN 40, DN 50, DN 65, DN 80, DN 100, DN 125 and DN 150
and the range of PN and Class
PN 6, PN 10, PN 16, PN 25, Class 150 and Class 300.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 7-1 :1994, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation
ISO 228-1:2000, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions, tolerances and designation
ISO 898-1:1999, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws and studs
ISO 5211:2001, Industrial valves — Part-turn actuator attachments
ISO 8233:1998, Thermoplastics valves — Torque — Test method
ISO 8659:1989, Thermoplastic valves — Fatigue strength — Test method
ISO 9393-2:2005, The rmoplastics valves for industrial applications — Pressure test methods and requirements — Part 2: Test conditions and basic requirements
4 Requirements
4.1 Design
4.1.1 Valve function
Two-way ball valves in accordance with this International Standard shall be suitable for isolating service and may be designed to be used for control service.
Multi-way ball valves in accordance with this International Standard shall be suitable to divert/mix the flow. They may also be suitable for isolating one or more ways.
4.1.2 Design characteristics
4.1.2.1 The valve type shall be of one-way or multi-way design. Annex B gives possible guidance on type alternatives for multi-way ball valves.
4.1.2.2 Valves shall have the following design characteristics.
a) For two-way ball valves only: a design of valve obturation suitable for flow in both directions.
If the sealing capability is in one direction only, this shall be marked by an arrow on the outside of the valve body as specified in Table 2, item 10.You can download BS EN ISO 16135 pdf.