WHAT ARE ALL SAFETY IN GAUGE GLASS| WHY BALL VALVE IS PROVIDED IN WATER SIDE OF THE GAUGE GLASS| WHY ORIFICE IN PROVIDED IN STEAM SIDE OF THE GAUGE GLASS|TIGHTNESS PROCEDURE OF THE GAUGE GLASS|
Негізгі бет SAFETY IN GAUGE GLASS|BALL VALVE IN WATER SIDE|ORIFICE IN STEAM SIDE|(PART-2)
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