ISO 17778:2015 specifies a method for determining the flow rate/pressure drop relationship of components for plastics piping systems when tested using air at 25 mbar.

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This Part of EN 12201 specifies the characteristics of valves or valve bodies made from polyethylene (PE 100 and PE 80) for buried and above ground applications, intended for the conveyance of water for human consumption, raw water prior to treatment, drainage and sewerage under pressure, vacuum sewer systems, and water for other purposes.
NOTE 1   For valves or valve bodies intended for drainage and sewerage under pressure, additional specifications/tests may be necessary according to the requirements of the purchaser, especially for the chemical resistance of the components in contact with the fluids and functioning characteristics.
NOTE 2   For PE components intended for the conveyance of water for human consumption and raw water prior to treatment attention is drawn to 5.4. Components manufactured for water for other purposes may not be suitable for water supply for human consumption.
It also specifies the test parameters for the test methods referred to in this European Standard.
NOTE 3   Valves made from material other than polyethylene (PE) designed for the supply of water intended for human consumption to a relevant standard(s) can be used in PE piping systems conforming to EN 12201 when they have relevant PE connection for butt fusion or electrofusion ends (see EN 12201-3:2011).
In conjunction with Parts 1, 2, 3 and 5 of EN 12201 it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions:
a)   allowable operating pressure, PFA, up to 25 bar  )
b)   an operating temperature of 20 °C as a reference temperature;
c)   buried in the ground;
d)   sea outfalls;
e)   laid in water;
f)   above ground, including pipes suspended below bridges.
NOTE 4   For applications operating at constant temperature greater than 20 °C and up to 40 °C, see EN 12201 1:2011, Annex A.
EN 12201 covers a range of allowable operating pressures and gives requirements concerning colours and additives.
NOTE 5   It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national guidance or regulations and installation practices or codes.
This Part of EN 12201 covers valves for pipes with a nominal outside diameter dn ≤ 315 mm.

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ISO 1452-4:2009 specifies the characteristics of valves made from unplasticized poly(vinyl chloride) (PVC‑U) for piping systems intended for water supply and for buried and above-ground drainage and sewerage under pressure. It also specifies the test parameters for the test methods referred to.
In conjunction with ISO 1452-1, ISO 1452-2, ISO 1452-3 and ISO 1452-5 it is applicable to PVC‑U valves with components of PVC-U, other plastics and non-plastics materials intended to be used for the following:
- water mains and services buried in ground;
- conveyance of water above ground for both outside and inside buildings;
- buried and above-ground drainage and sewerage under pressure.
It is applicable to valves in piping systems intended for the supply of water under pressure up to and including 25 °C (cold water) intended for human consumption and for general purposes as well as for waste water under pressure. It is also applicable to valves for the conveyance of water and waste water up to and including 45 °C.

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This document specifies the characteristics of valves made from unplasticized polyamide (PA-U) in accordance with ISO 16486-1, intended to be buried and used for the supply of gaseous fuels.
It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PA-U pipes or fittings conforming to ISO 16486-2 and ISO 16486-3 respectively.
Valves made from material other than unplasticized polyamide designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PA-U piping systems according to the ISO 16486 series provided they have relevant PA-U connections for butt fusion or electrofusion ends (see ISO 16486-3). The component, i.e. the complete valve, is required to fulfil the requirements of this document.
This document also specifies the test parameters for the test methods it describes.
In conjunction with ISO 16486-1, ISO 16486-2, ISO 16486-3 and ISO 16486-5, this document is applicable to PA-U valves and their joints and to joints with components of PA-U and other materials intended to be used under the following conditions:
a) a maximum operating pressure (MOP) of up to and including 18 bar[1], or limited to 16 bar under regional CEN requirements, at a reference temperature of 20 °C for design purposes;
NOTE 1    For the purpose of this document and the references to ISO 8233, MOP is considered to be nominal pressure.
b) an operating temperature of −20 °C to 40 °C;
NOTE 2    For operating temperatures between 20 °C and 40 °C, derating coefficients are specified in ISO 16486-5.
This document covers valves for pipes with a nominal outside diameter, dn, ≤ 400 mm.
[1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm².

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This document specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.
It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PE pipes or fittings conforming to EN 1555-2:2021 and EN 1555-3:2021 respectively.
Valves made from materials other than PE, designed for the supply of gaseous fuels conforming to the relevant standards can be used in PE piping systems according to EN 1555 (all parts), provided that they have PE connections for butt fusion or electrofusion ends, including integrated material transition joints, conforming to EN 1555-3:2021.
It also specifies the test parameters for the test methods referred to in this document.
In conjunction with Parts 1, 2, 3 and 5 of EN 1555, it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions:
a) a maximum operating pressure, MOP, up to and including 10 bar1 at a reference temperature of 20 °C for design purposes;
NOTE 1 For the purpose of this document and the references to EN ISO 82332, MOP is considered to be nominal pressure.
b) an operating temperature between −20 °C to 40 °C.
NOTE 2 For operating temperatures between 20 °C and 40 °C, derating coefficients are defined in EN 1555-5.
EN 1555 (all parts) covers a range of maximum operating pressures and gives requirements concerning colours.
NOTE 3 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
This document covers valve bodies designed for connection with pipes with a nominal outside diameter dn ≤ 400 mm.

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This standard specifies a test method for the resistance to bending of a valve installed between supports. This standard is applicable to valves with a polyethylene (PE) body for use with pipes having a nominal outside diameter from greater than 63 mm up to and including 225 mm and intended for the transport of fluids.

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This standard specifies a test method for the resistance of valves to thermal cycling. This standard is applicable to polyethylen (PE) valves and valves with PE spigot-ends having a nominal outside diameter greater than 63 mm and intended for the transport of fluids.

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This draft standard specifies a method for testing the ability of a valve, intended for use in PE piping systems for gas supply, to maintain its pressure retaining capabilities under and after being subject to a bending moment appliedto the operating mechanism (cap).

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This standard specifies test methods for the resistance to internal pressure (method A) and the leaktightness (method B) of thermoplastics valves. This standard is applicable to thermoplastics valves intended for the transport of fluids.

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This standard specifies a method for determining the leaktightness and ease of operation of a valve under bending following the application of temperature cycling. This standard is applicable to thermoplastic valves with DN 63 or smaller.

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This standard specifies a method for determining the leaktightness and the ease of operation of a valve following an impact applied to the operating mechanism (cap) or other exposed mechanism.

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This document specifies the characteristics of valves or valve bodies made from polyethylene (PE) for buried and above ground applications, intended for the conveyance of water for human consumption, raw water prior to treatment, drainage and sewerage under pressure, vacuum sewer systems, and water for other purposes.
It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PE pipes or fittings conforming to prEN 12201 2 and prEN 12201 3 respectively.
Valves made from materials other than PE, designed for the supply of water, drainage and sewerage under pressure conforming to the relevant standards can be used in PE piping systems according to EN 12201, provided that they have PE connections for butt fusion or electrofusion ends, including integrated material transition joints, conforming to prEN 12201 3.
NOTE 1   For valves or valve bodies intended for drainage and sewerage under pressure, additional specifications/tests could be necessary according to the requirements of the purchaser, especially for the chemical resistance of the components in contact with the fluids and functioning characteristics.
NOTE 2   For PE components intended for the conveyance of water for human consumption and raw water prior to treatment attention is drawn to 5.4. Components manufactured for water for other purposes are possibly not suitable for water supply for human consumption.
It also specifies the test parameters for the test methods referred to in this document.
NOTE 3   Valves made from material other than polyethylene (PE) designed for the supply of water intended for human consumption to a relevant standard(s) can be used in PE piping systems conforming to EN 12201 when they have relevant PE connection for butt fusion or electrofusion ends (see prEN 12201 3:2021).
In conjunction with Parts 1, 2, 3 and 5 of EN 12201 it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions:
a)   allowable operating pressure, PFA, up to 25 bar );
b)   an operating temperature of 20 °C as a reference temperature;
c)   buried in the ground;
d)   sea outfalls;
e)   laid in water;
f)   above ground, including pipes suspended below bridges.
NOTE 4   For applications operating at constant temperature greater than 20 °C and up to 40 °C, see prEN 12201 1:2021, Annex A.
EN 12201 covers a range of allowable operating pressures and gives requirements concerning colours and additives.
NOTE 5   It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national guidance or regulations and installation practices or codes.
This Part of EN 12201 covers valves for pipes with a nominal outside diameter dn ≤ 400 mm.

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This European Standard specifies the characteristics of valves made from polyethylene (PE) for piping systems in the field of the supply of gaseous fuels.
NOTE 1   Valves made from other material than polyethylene designed for the supply of gaseous fuels conforming to the relevant standards are permitted to be used in PE piping system according to EN 1555 provided they have relevant PE connection for butt fusion or electrofusion ends (see EN 1555 3).
It also specifies the test parameters for the test methods referred to in this standard.
In conjunction with Parts 1, 2, 3 and 5 of EN 1555, it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions:
a) a maximum operating pressure, MOP, up to and including 10 bar  );
b) an operating temperature of 20 °C as reference temperature;
NOTE 2   For other operating temperatures, derating coefficients should be used, see EN 1555 5.
c) an operating temperature between -20 °C and +40 °C.
EN 1555 covers a range of maximum operating pressures and gives requirements concerning colours and additives.
NOTE 3   It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national regulations and installation practices or codes.
It is applicable to bi-directional valves with spigot end or electrofusion socket intended to be fused with PE pipes conforming to EN 1555 2 without any fittings or with PE fittings conforming to EN 1555 3.
This European Standard covers valves for pipes with a nominal outside diameter dn  315 mm.

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