The Bellows Sealed Globe Valve for Ammonia is equipped with an additional bellows assembly at the valve stem position in the valve cavity of the ammonia globe valve. It is mainly used for corrosive fluids such as ammonia gas and liquid ammonia, and can effectively prevent the sealing packing failure caused by frequent opening and closing of the valve stem. The bellows seal and packing seal work together to form a dual seal, ensuring the reliability of the axial dynamic seal. Since the packing is prone to leakage during long-term use, a loaded packing compression mechanism is adopted in the design to make the packing seal more durable and reliable.

Technical Parameters of Bellows Sealed Globe Valve for Ammonia

• Design Standard: EN12516

• Face-to-Face Dimension: EN558

• Flange Connection: EN1092-1

• Testing and Inspection: EN12266

• Valve Body Material: CF8/CF8M/CF3/CF3M

• Operating Pressure: 1.6Mpa-4.0Mpa

• Nominal Diameter: DN15-DN400

• Operating Conditions: Media such as ammonia gas and liquid ammonia

Applications of Bellows Sealed Globe Valve for Ammonia

The ammonia globe valve that uses a bellows as the valve stem sealing element is called the Bellows Sealed Globe Valve for Ammonia. It uses a bellows to replace the stuffing box on ordinary valves or is used in conjunction with the stuffing box. It is often used in occasions with strict requirements on valve stem sealing, such as refrigeration, power plants, ammonia stations of chemical plants (liquid ammonia storage tanks), gas stations, and liquefied gas stations.

The Bellows Sealed Globe Valve for Ammonia is designed to prevent external leakage of the valve stem during the opening and closing reciprocating movement of the valve. It is applied to materials with toxic, volatile, and radioactive media. At the same time, a standard or environmentally friendly stuffing box structure (graphite or PTFE sealing rings) is adopted on the bellows sealing element, which can avoid leakage in case of bellows rupture and failure. Therefore, attention should be paid to observing whether there is external leakage at the valve stem packing during daily use. If the packing leaks, the bellows valve may have problems and should be replaced in time.