Habonim Catalog Interactive 2024 V04 15022024 - Catalog - Page 413
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Valve Component Materials
Due to the extreme noxious nature of ammonia, it is crucial that all valve components are
constructed with appropriate materials.
Materials recommendations
Bill of Materials
Wet Ammonia
Dry Ammonia
Body, ends, ball, stem Stainless Steel 316/316L, CF8M/CF3M
Carbon Steel, WCB (min. temp. -29 °C, LCB min. -46 °C, LF2 min. -60 °C)
Seats
TFM (A), PTFE (T), CF PTFE (P), Glass filled PTFE (R), PEEK (K), CF PEEK
TFM (A), PTFE (T), CF PTFE (P), Glass filled PTFE (R), PEEK (K)
Seals
PTFE (T)
PTFE (T)
Cleaning, Assembling and Packing
All valve components used for ammonia service, in gaseous or liquid state, are de-burred to
a high standard and specifically cleaned to remove any traces of oil, grease or hydrocarbon
materials prior to assembly.
Ammonia service valves are assembled in an oil-free restricted area by personnel who are
specially equipped and trained to perform this task. The assembling area, work surfaces,
equipment and tools are specially maintained to ensure cleanliness requirements are met.
Only lubricants compatible with ammonia are used.
• Valves are packed in open position with capped ends and plastic bagged
• Each valve is packed with a 'Silica-gel pack'
• A sticker on the plastic bag indicating “Ammonia Service"
Optional Accessories
Fugitive Emission Bonnet (FE)
An important safety mechanism that Habonim offers for ammonia service is the Fugitive
Emission bonnet (FE). A stainless-steel pressure chamber bolted on and sealed against the
valve ISO 5211 top platform. The FE bonnet will accumulate ammonia leak, if occurred, and
contain it in a confined space until a maintenance operation is scheduled.
A readily made purge ports at the FE bonnet top allow the site technician to connect pressure
gauge, pressure transducer or ammonia sniffer to alert for ammonia leak through the valve
stem seal. The FE bonnet allows stem seal redundancy, a simple design, yet crucial to enhance
site safety in terms of ammonia leak through the atmosphere.
For mor information see Habonim Valve Accessories catalog.
Locking Device (LD)
As a safety measure, it is advisable that valve for ammonia service should be equipped with
spring loaded locking device do avoid unauthorized or unintentional valve operation.
For more information see Habonim Valve Accessories catalog.
SPECIAL USE VALVES
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