Cryogenic Gate Valves are manufactured to the latest edition of API Standard 600 and/or 603 and tested to API Standard 598.

APPLICATION & FUNCTION
During the processes of production, transportation, storage and usage of liquefied gases, countless technical problems can be experienced. Vatac cryogenic Gate valves are designed to assure safety and reliability under these critical conditions. All of Vatac cryogenic Gate valves are thoroughly cleaned and decreased. Afterwards the end ports are sealed to prevent contamination. This process is performed in an approved and designated clean room.

BODY & BONNET
The design of the body and bonnet is calculated to achieve the most regular distribution of stress in all directions, as
well as the minimum turbulence and resistance to flow. The extended bonnet provides a gas column which thermally isolates the stem packing and stem nut from the extreme temperatures so they remain functional. Usually the customer specifies the column length. The body-bonnet joint is bolted using applicable ASTM specified bolting for low temperature/cryogenic conditions.

GASKET
We can supply any style of gasket required by our customer; however, we recommend gaskets that are oxygen compatible.

CLOSURES
All gates are fully guided to the seats. As standard, our valves are supplied with a stellite faced, solid flexible gate that has a tapered H cross-section. The flexible wedge is cast or machined with a circumferential groove to allow the seating surfaces to move independently and adjust to movement of the body seats.
▲Other soft inserts are available upon request