Because of the double port seals in both directions and the sealed isolation of the chamber below the plug and the areas around the plug, 90° to the port openings, a drainage connection into the plug cavity may be drilled and tapped through the body from either side or the bottom.
A 1/2” (12.7 mm) drain connection is standard, but other sizes can also be provided. Specify connection size; length as indicated on the drawing and whether the bleed valve is required. A FluoroSeal® Fig. R152/302SE is ideally suited as the bleed valve.
ANSI/ASME
Bleed valve diameter 1/2" available in block valve size 2", 2 1/2", 3", 4"
Bleed valve diameter 3/4" available in block valve size 6", 8"
Bleed valve diameter 1" available in block valve size 10", 12", 14", 16", 18", 24"
DIN
Bleed valve diameter DN 15 available in block valve size DN 50, DN 65, DN 80, DN 100
Bleed valve diameter DN 20 available in block valve size DN 150