Dq41y forged steel low temperature ball valve product introduction:

Forged steel low-temperature valves have two bonnet designs. The first is the bolted bonnet. For the valve designed according to this design form, the valve body and bonnet are connected with bolts and nuts, and the spiral wound gasket (made of 316 clips of flexible graphite) is sealed. Metal ring connection can also be used when customers have special requirements. The second design form is the Welded Bonnet. For the valve in this design form, the valve body and bonnet are connected by threads and sealed by full welding. When the customer has special requirements, it can also adopt full welding connection. The gate, stop valve and ball valve can be designed as low-temperature valves. In order to be used at a low temperature of -196 ℃ (320of), the valve is generally designed as an extended bonnet.

Dq41y forged steel low temperature ball valve design structure and features:

Low temperature ball valve complies with API602, mss-sp-118 and bs6364. Inspection and testing shall be in accordance with API598, and marking shall be in accordance with mss-sp-25.

Adopt the following structure

Full diameter or reduced diameter

Self centering pressing plate jacketed type

Bolted spiral wound gasket sealed bonnet and threaded full welded sealed bonnet

Integral upper seal seat

Valve seat with pressure balancing hole (for gate valve and ball valve)

Socket ends to ASME B16.11

Threaded ends conform to (NPT) ansi/amme b1.20.1

Customer requires special extension length

Soft seal stop valve required by customers

PTFE filler required by customer PTFE

Special low temperature test required by customers

Rising stem support type (os&y)