Anti-pollution check valves. DN 6 to DN 250 inclusive Family E, type A, B, C, and D1 Scope The purpose of this document is to specify: field of application of anti pollution check valves; backflow prevention properties, dimensional and physio chemical properties, and properties of general hydraulic, mechanical and acoustic design for anti pollution check valves of nominal sizes DN 6 to DN 250 inclusive; family E, type A, controllable anti pollution check valve (with test port); family E, type B, non controllable anti pollution check

• Nature of pollutant used

BS EN 60730-1 informs the control manufacturer shall provide adequate information to confirm:

which can help increase traffic throughput and reduce fuel consumption

and documentation of venous whole blood specimens intended for cellular RNA examination during the pre-examination phase before a molecular examination is performed

The defects are identified by using the post soldering inspection method

a naming concept for biometric data structures

Thallium is a chemical element with the symbol Tl and atomic number 81

background and professional competence of staff members

This British Standard supersedes BS 4872-1:1972 which is withdrawn

BS EN 62386-210 provides manufacturers with the terms

Pressure requirements for irrigation systems and sprinkler choices are dependent on soil

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