Low Temperature Gate Valves

Hanno Valve Low Temperature Gate Valves usually adopts metal sealing structure to ensure that it can maintain good sealing performance under low temperature conditions and prevent fluid leakage. ‌ ‌

The main material of Low Temperature Gate Valves are LCB, LCC, LC1, 20GL, 20GML, stainless steel, etc.

Hanno Valve's Low Temperature Gate Valves come in two types of valve cover designs. The first type is bolt type valve cover. According to this design, the valve body and valve cover are connected by bolts and nuts, and wrapped with gaskets (made of 316 clip flexible graphite). When customers have special requirements, metal rings can also be used for connection. The second design form is a welded valve cover. According to this design form, the valve body and valve cover are connected by threads and fully welded sealed. When customers have special requirements, through welding connections can also be used.

Pressure rating: 1.6Mpa~2.5Mpa

Product specifications: DN15~300mm

Product Material: Carbon Steel, Stainless Steel, High Temperature Steel

Applicable temperature: -45oC~197 oC

Applicable media: ethylene, propylene, liquid nitrogen, liquid hydrogen

Technical requirements for Low Temperature Gate Valves:

1. Design, manufacturing, and acceptance shall comply with JB/T 7749-95

2. Main materials: LCB, LF1, LF3, LC3, CF8, F304, etc

3. The structural length shall be in accordance with GB/T 12221-1989 standard

4. The flange connection size shall be in accordance with JB/T 79-1994 standard

5. Applicable temperature: -46 to 196 ° C

6. The inspection and testing of valves shall comply with JB/T 9092-1999 standard

Main materials of Low Temperature Gate Valves:

1. Valve body and valve cover: stainless steel

2. Valve stem: 1Cr18Ni9Ti

3. Sealing surface of gate and valve seat: welded hard alloy

4. Valve stem nut: aluminum bronze

5. Gasket: Low temperature asbestos, wax impregnated asbestos rubber sheet

6. Packing: flexible graphite, polytetrafluoroethylene, PTFE impregnated asbestos rope

7. Handwheel: ductile iron or malleable iron

Materials