DN400 PN63 trunnion-mounted ball valve in 09G2S low-alloy steel: body pressure-temperature limits, GOST 9544 tightness classes, flange and design checks.
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DN400 PN63 trunnion-mounted ball valve in 09G2S low-alloy steel: body pressure-temperature limits, GOST 9544 tightness classes, flange and design checks.