Flygt 4910, Flush Valve - MIDI Bobinage

Flygt 4910, Flush Valve (EN)The recommended flushing period for the 4910 is from 10 sec up to maximum 40 sec.(Can be adjusted by the regulating valve.) The flush valve is open when the pump startsand closes after a chosen mixing period. The pump continues pumping until the shut-offlevel is reached. The flush valve opens again at the shut-off level.Complete unit, flush valve601 91 00WeightFlush Valve2,6 kgLIMITATIONSThe flush valve 4910 can be used in explosive or flamable environments or with flammableliquids in accordance with the approvals of the pump to which it is connected.Minimum permitted geodetic and duty head:(Unless the performance curve is limited by the C1 limit line).Geodetic head 1 :Calculated duty head:0 – 1 m + min. 7 m1 – 2 m + min. 6 m2 – 3 m + min. 5 m3 – 4 m + min. 4 mAllowable executionsThe adjustable outlet bend 602 02 00 always must be used.The flush valve 4910 has no special approval.MATERIALTable 21Description Material Flygt-Number DIN BS ASTMMajor castings Cast iron 0314.0120.00 1691 GG20 1452:1977Grade 220A48-76 Nr30BBall Ball bearing steelBall seat Stainless steel 0344.2324.02 W.no1.4460 AISI329Regulating valve Brass 0456.5170.04 CuZn 39Pb3 CZ121 C36000O-rings,membranes, andoutlet bendNitrile Rubber70°0516.2637.04Screws Stainless steel 0344.2343.02 W.nr 1.4436 316 S33 AISI 316Oil (original)Oil (alternative)Rapeseed oil(0,07 l)Mineral oil ISOVG 32 or ISOVG68901762Mineral oil ISOVG68Elbow, Tee Malleable cost 0317.0815.00 1692 3333 340/12 A220Nipple, plug Iron GTS 3510 280 M101 Difference in height between the water level in the sump and the highest point of the discharge pipe.26 Flygt 4910, Flush Valve Installation, Care and Maintenance