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EMERGENCY VENT MANHOLE COVER

MOD. 129 and related variant (128, ...)
The model 129 valves are used to guarantee provide a large emergency relief opening in case of fire exposure, ensuring a rapid release of gas and the protection of the tank. They also allow easy access to the tank for inspection or maintenance operations. The model 129 is available in the following sizes: 16" (DN400), 20" (DN500), 24" (DN600)

Valves mod. 128 The model 128 is a variant of the model 129, it is realized with a different geometry for applications which requires a greater relief capacity. It is available in the following size: 30" (DN750)

MAIN FEATURES

SETTING
Through one or more dead weights, any setting is available between +13 mbar g and +50 mbar g. Higher or lower settings upon request

MATERIALS

BODY
Carbon steel with Stainless Steel electrowelded seat
Stainless Steel (AISI 304L, AISI 316L)

COVER
Aluminium
Carbon steel
Stainless Steel (AISI 304L, AISI 316L)


DIAPHRAGM
PTFE, NBR, FKM, EPDM

FLANGE

Drilled acc. to EN 1092-1 PN10/16, ASME B16.5 Class 150 RF, API 650
Special flanges upon request