ATICL Shrink Capsule Gate Valve

• The design purpose of ATICL Shrinking Capsule Gate Valve is mainly to solve the problem of external leakage of the valve structure. The valve stem parts penetrate the valve cavity and the external environment, resulting in a medium leakage channel. The valve stem parts need to be rotated or lifted. The conventional design of the seal at this place adopts the compression packing to ensure the sealing. The movement of the valve stem causes the packing wear and loss, which will inevitably cause the leakage of the medium. In order to ensure the generation of leakage at this place, a fully sealed bellows expansion bladder structure is provided at this place.

• The bellows is a completely sealed corrugated series structure made of metal plates by welding and hydroforming, and this part allows a certain displacement in the axial direction. In order to ensure the sealing performance, the two ends are usually connected with other parts by welding.

ATICL the design features of the shrinking capsule gate valve

• Reliable valve stem anti-rotation structure: lift valve stem, valve stem design anti-rotation device

• The bellows is designed to withstand external pressure, which can ensure higher pressure resistance and service life of the bellows

• The reinforced valve stem can ensure the strength required by the lengthening of the valve stem: considering the stability of the valve stem, we use a stronger valve stem size than conventional valves.

• The sealing design on the valve stem can ensure the sealing of external leakage when the valve is opened, effectively ensure that the bellows runs within a safe stroke, and can also slow down the vibration of the valve stem caused by the flow of the medium.

• The flat welding structure of the bellows prevents the straight section of the bellows from being deformed under the action of the medium pressure, which will cause the cracking of the bellows weld, which will affect the service life.

• Multi-layer bellows effectively ensure the pressure bearing capacity of the bellows

• Sufficient wave number of bellows ensures long-term and reliable operation of the valve within the specified stroke

• The bellows connected in multiple sections and the inner guide of the connecting ring can ensure that the bellows will not be unstable under the action of pressure

• All bellows are not directly eroded by the medium to prevent the bellows from breaking under the impact of impurities in the medium

• The downward guide of the valve stem can ensure the sufficient stability of the valve stem, and effectively suppress the failure of the bellows weld caused by the vibration of the valve stem under the action of the unbalanced force of the medium

ATICL Shrinking Capsule Gate Valve Design Standard

Design Standards：API600.

Bellows Design Standard：MSS SP117.

Structure Length Standard：ASME B16.10.

Flange Standard：ASME B16.5.

Butt Weld Standard：ASME B16.25.

Temperature Pressure Rating：ASME B16.34.

Valve Test Standards：API598,API6D