PRESSURE RELIEF VALVE

MOD. 9 e related variants (9 A, ...)

These valves are designed to protect the reservoirs against the overpressures. As the reservoir pressure exceeds the valve setting, the pallet arises allowing the vapour discharging

Drawing

flow rate curve

DN 2"

DN 3"

DN 4"

DN 6"

DN 8"

DN 10"

DN 12"

VALVES MOD. 9 A
Spring loaded valves, used when the set pressure is higher than +100 mbar g

VALVES MOD. 9 TV
Valves with o-ring sealing available in various elastomeric materials (NBR, EPDM, FKM, FEPM, FFKM), to increase the tightness and minimize the leakages

MAIN FEATURES

Replaceable seats

ANTIFREEZING PALLETS
The pallet drip 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, therefore a close coupling between pallet and guides is not necessary

SETTING
Through the pallet's dead weights, any setting is available between +2,5 mbar g and +100 mbar g. Higher settings can be achieved with a spring configuration

MATERIALS

BODY
Carbon Steel
Stainless steel (AISI 304L, AISI 316L)
Special materials available upon request
(DUPLEX, SUPERDUPLEX, ALLOY C276)

SEATS AND PALLET
AISI 304L, AISI 316L, PTFE
Anti-corrosion materials (PTFE, Alloy C276)

BIRD SCREEN AND GUIDES
AISI 304L, AISI 316L
Anti-corrosion materials (PTFE, Alloy C276)

WEATHERHOOD
AISI 304L

DIAPHRAGM
PTFE, FEP, NBR, FKM, EPDM

FLANGE

Drilled acc. to EN 1092-1 PN10/16, ASME B16.5 Class 150 RF
Special flanges upon request