Vacuum relief valves
weight loaded
Details
Pressure relief valves are weight loaded vents designed to prevent tank deformation caused by increase in internal pressure.
When tank preassure reach valve pressure setting, weight loaded pallet is lifted allowing the excess pressure to be vented to atmosphere
or to be piped-away.
Pallets have knife edged ring with sealing or metal to metal.
Mesh screen over inlet excludes foreign matter.
Features
SIZE: 1” (25 mm) through 14” (350 mm)
CONSTRUCTED: carbon steel, stainless steel, additional
metals and coatings
SETTING PRESSURE: -2,5 mbar to -50 mbar
upon request -450 mbar
FLANGE RATING: ANSI 150, PN10, PN16
Products
series 5200 — atmospheric inlet - 1/2” to 2”
series B5220 — piped inlet - 1/2” to 2”
series 5000 — atmospheric inlet - 3” to 6”
series B5000 — flanged inlet - 3” to 6”
series 3000 — atmospheric inlet - 8” to 14”
series B3000 — flanged inlet - 8 ” to 14”
Installation and maintenance
Materials
| DESCRIPTION | STANDARD MATERIALS OF CONSTRUCTION | ||
| CARBON STL | SS | SPECIAL | |
| nut, hex | SS | SS | SS |
| cover | AL GR 356 T6 | CS | SS |
| gasket, cover | NON-ABS | NON-ABS | NON-ABS |
| pallet, pressure | SS | SS | SS |
| o-ring, plate pallet (2) | VITON | VITON | VITON |
| flange | SS | SS | SS |
| rod, guide | SS | SS | SS |
| stem, pressure | SS | SS | SS |
| body | AL GR 356 T6 | CS | SS |
| stud - nut | SS | SS | SS |