introduction
introduction
introduction
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JOHN EDWARDS & ASSOCIATES<br />
ENGINEERING CONSULTANTS<br />
19 ASHLEIGH ROAD, SOLIHULL, WEST MIDLANDS B91 1AE.<br />
TELEPHONE: +44(0)121 705 1228 FAX: +44(0)121 705 4890<br />
E-mail: emas.john@dial.pipex.com<br />
15th March 1999<br />
Testing of Iseki 90mm Vacuum Interface Valves<br />
to BS EN 1091 : 1977<br />
This is to confirm that I have witnessed the testing of a 90mm Iseki Vacuum<br />
Interface valve under simulated working conditions to the requirements of BS EN<br />
1091 : 1997, in particular the requirements of para 7.1.2. The valve completed<br />
250,000 cycles without maintenance and was still working completely<br />
satisfactorily when the test was terminated. Subsequent strip down of the valve<br />
revealed negligible wear in all the moving parts.<br />
John Edwards<br />
Chartered Engineer<br />
Registered Quality Lead Assessor<br />
PRINCIPAL J. H. EDWARDS M.B.E., B.A., C.ENG., F.I.MECH.E., M.I.MGT., M.I.Q.A.<br />
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