A cryogenic gate valve with an extended bonnet designed to operate at temperatures as low as -196°C is typically built to withstand the extreme cold and maintain proper functionality in such harsh conditions. These valves are often used in industries such as liquefied natural gas (LNG) processing, industrial gas production, and other cryogenic applications where extremely low temperatures are involved.The extended bonnet design provides additional insulation and protection for the valve stem and packing, preventing them from freezing or becoming brittle at such low temperatures. Additionally, the materials used in the construction of the valve, such as specialized alloys or low-temperature plastics, are chosen to maintain their strength and integrity in cryogenic environments.Such valves are crucial for safely controlling the flow of cryogenic fluids and gases, and they undergo rigorous testing to ensure they can handle the extreme temperatures and pressures involved. 1.The structure is simpler than the gate valve, and it is more convenient to manufacture and maintain. 2.The sealing surface is not easy to wear and scratch, and the sealing performance is good. There is no relative sliding between the valve disc and the sealing surface of the valve body when opening and closing, so the wear and scratch are not serious, the sealing performance is good, and the service life is long. 3.When opening and closing, the stroke of the disc is small, so the height of the stop valve is smaller than that of the gate valve, but the structural length is longer than that of the gate valve. 4.The opening and closing torque is large, the opening and closing is laborious, and the opening and closing time is long. 5.The fluid resistance is large, because the medium channel in the valve body is tortuous, the fluid resistance is large, and the power consumption is large. 6.Medium flow direction When the nominal pressure PN ≤ 16MPa, it generally adopts forward flow, and the medium flows upward from the bottom of the valve disc; when the nominal pressure PN ≥ 20MPa, generally adopts counter flow, and the medium flows downward from the top of the valve disc. To increase the performance of the seal. When in use, the globe valve medium can only flow in one direction, and the flow direction cannot be changed. 7.The disc is often eroded when fully open.As a professional forged steel valve manufacturer and exporter, we promise to provide customers with high-quality after-sales service, including the following: 1.Provide product usage guidance and maintenance suggestions. 2.For failures caused by product quality problems, we promise to provide technical support and troubleshooting within the shortest possible time. 3.Except for damage caused by normal use, we provide free repair and replacement services. 4.We promise to respond quickly to customer service needs during the product warranty period. 5. We provide long-term technical support, online consulting and training services. Our goal is to provide customers with the best service experience and make customers' experience more pleasant and easy.

Product	Cryogenic Gate Valve Extended Bonnet for -196℃
Nominal diameter	NPS 1/2”, 3/4”, 1”, 1 1/2”, 1 3/4” 2”, 3”, 4”
Nominal diameter	Class 150, 300, 600, 800, 900, 1500, 2500.
End Connection	BW, SW, NPT, Flanged, BWxSW, BWxNPT, SWxNPT
Operation	Handle Wheel, Pneumatic Actuator, Electric Actuator, Bare Stem
Materials	A351 CF8, CF8M, CF3, CF3M, F304,F316 ,F51,F53,F55, Alloy 20, Monel, Inconel, Hastelloy
Structure	Outside Screw & Yoke (OS&Y)，Extended Cryogenic Bonnet
Design and Manufacturer	API 600, API 623, BS1868, BS 6364, MSS SP -134, API 608, API 6D, ASME B16.34
Face to Face	Manufacturer Standard
End Connection	SW (ASME B16.11)
	BW (ASME B16.25)
	NPT (ASME B1.20.1)
	RF, RTJ (ASME B16.5)
Test and Inspection	API 598
Other	NACE MR-0175, NACE MR-0103, ISO 15848
Also available per	PT, UT, RT,MT.

During the opening and closing process of the forged steel globe valve, because the friction between the disc and the sealing surface of the valve body is smaller than that of the gate valve, it is wear-resistant. The opening or closing stroke of the valve stem is relatively short, and it has a very reliable cut-off function, and because the change of the valve seat port is proportional to the stroke of the valve disc, it is very suitable for the adjustment of the flow rate. Therefore, this type of valve is very suitable for cut-off or regulation and throttling.