1 . SINGLE DISC WAFER CHECK VALVE PN40 SS31 6 DN20 IS INTENDED TO PREVENT CHANGE IN THE DIRECTION OF THE FLOW OF THE WORKING MEDIUM IN A PIPELINE TECHNOLOGICAL SYSTEM
1 . SINGLE DISC WAFER CHECK VALVE PN40 SS31 6 DN20 IS INTENDED TO PREVENT CHANGE IN THE DIRECTION OF THE FLOW OF THE WORKING MEDIUM IN A PIPELINE TECHNOLOGICAL SYSTEM