Description
Leader swing Check Valve (Pressure Seal Cover), available 50 mm to 250 mm at Class 1500. Check valves stop reverse flow without any external operation — line pressure alone opens and closes them. On a pump discharge they prevent backspin and the water hammer that follows an abrupt stop. A cast carbon steel body to ASTM A216 WCB handles the temperatures and pressures of steam and hot oil, where bronze or iron would not be rated. Butt-welded ends give a permanent joint with no potential leak path, used where the line is not intended to be broken. The table above gives the catalogue reference and price for each size in the range.
