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Safety valves for ammonia.

Safety valves designed to work in for contact with ammonia, body and internal parts in stainless steel, Teflon or stainless steel seal, made to withstand wear and corrosion for many years.


• Materials: UNI EN 10088 1.4404
SA479 S31603

• To guarantee 100% safe sealing in all its refrigeration and air conditioning products, NGI has developed a special valve testing island incorporating a hydrogen system. This island is able to detect even the smallest leakage, at pressures only just below the valve’s calibrated value, and effectively avoids annoying leakage problems during the plant start-up and commissioning stages.

• Seal seats: PTFE (-196ºC / +250ºC). METALIC (-196ºC / +450ºC).


Nuova General Instruments