These valves are designed to protect the reservoirs against excessive positive or negative (vacuum) pressures due to the loading or unloading operations and to the temperature variations. As the reservoir pressure exceeds the valve relief or vacuum setting, the pallets arise allowing the venting or the vacuum relieving of the reservoir.
MAIN FEATURES
REPLACEABLE SEATS
ANTIFREEZING PALLETS
The drip around the pallet avoids condensate collecting around the seat.
PALLET GUIDES LOCATED ABOVE THE SEAT
This arrangement assures a no-jamming guide of the pallet not affected by contaminant fluids as a close coupling between pallet and guides is not necessary.
BIRD SCREEN AVOIDS THE ENTERING OF FOREIGN ELEMENTS.
SETTING
Any setting available, charging the pallet's dead weight load, between ± 20 mbar and ± 400 mbar. (On request higher sets).
MATERIALS
BODY
cast Aluminium,
WCB, CF8 (304), CF8M (316)
SEATS AND PALLETS
AISI 304, AISI 316
BIRD SCREEN AND GUIDES
18/8 Stainless Steel
DIAPHRAGMS
FEP, P.T.F.E., NBR, FPM/FKM, etc
FLANGE
ANSI 150,
DRILLED TO UNI PN 10 ON REQUEST.