Devices to prevent pollution by backflow of potable water. Hose Union anti-vacuum valves. DN 15 to DN 25 inclusive Family H, type B and type D. General technical specification Ingestion-build-84997 BS 4317 is a British

BS 4317 is a British standard on methods of test for cereals and pulses that discusses the determination of moisture content of cereals and cereal products to enhance the shelf life of cereals and pulses

resistances

linearity and impedance of spirometers

for heat generation by the following heat pump systems

General principles for methods of measurement and computation of the flow rate of fluid flowing in circular cross-section conduits running full

Devices to prevent pollution by backflow of potable water. Hose Union anti-vacuum valves. DN 15 to DN 25 inclusive Family H, type B and type D. General technical specification Ingestion-build-84997 BS 4317 is a British1 Scope This document specifies: a) the field of application; b) the requirements of hose union anti vacuum valves; c) dimensional and physio chemical properties, and properties of general hydraulic, mechanical and acoustic design of hose union anti vacuum valves of nominal sizes DN 15 up to and including DN 25; d) marking and technical product information. This document specifies the characteristics of hose union anti vacuum valves of nominal size DN