Plastics piping systems for water supply and for buried and above-ground drainage and sewerage under pressure. Unplasticized poly(vinyl chloride) (PVC U) - Valves1 Scope This part of ISO 1452 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 this part of ISO 1452. 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

Measurement techniques

BS EN 60730-1 helps to assist automatic action for which the manufacturing deviation and the drift of its operating value

Additional requirements for manually operated dock levellers

but is equally applicable to freehand lettering or other appropriate methods

BS EN 13203-5 is applicable to gas-fired appliances producing domestic hot water

Become more innovative and improve management system processes

The admission of students or graduates in domestic institutions

test and test schedules for connectors

ISO 160144 specifies a method for determining the average molecular weight and the molecular weight distribution of polymers by size-exclusion chromatography (SEC) using an organic eluent at temperatures between 60 °C and 220 °C

Footwear protecting against chemicals

BS 7161  applies to shaft diameter range of 20 to 160 mm with a taper of 1: 10^1)

see Clause 9 and Annex B