Hard Back Seat LCB Wafer Butterfly Valve

The LCB wafer butterfly valve is made of cryogenic steel-low-temperature steel. It is a type of steel specifically designed to work in low-temperature environments.

Its advantages include:

• Excellent low-temperature toughness: LCB can maintain good toughness and strength at extremely low temperatures. It allows to work normally in extremely cold environments.
• Suitable for low-temperature processes: LCB is widely used in low-temperature processes such as liquefied natural gas (LNG) and liquefied petroleum gas (LPG).

However, low temperature steel LCB wafer butterfly valve also has some disadvantages, such as:

-Higher cost: Since LCB needs to have excellent low-temperature properties and corrosion resistance. Its manufacturing cost is usually higher.
-Difficulty in processing: Due to the special performance requirements of low-temperature steel, it may be more difficult to process. It requires higher processing and welding processes.
-Poor weldability: Some special types of low-temperature steel may have certain difficulties in welding and require special welding processes and materials.

Material

Part Name	Material/Method
Body	Ductile Iron, Casting Iron, WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze
Disc	Ductile Iron(Coated/Lined), WCB, LCB/LCC, Stainless Steel, Duplex Stainless Steel, Aluminium Bronze
Seat	Rubber(EPDM/NBR/VITON), Nature Rubber, Silicon Rubber, PU, HNBR, Hypalon
Stem	304, 316, 420(2Cr13), 431, 1.4462, 17-4PH, Monel
Actuator	Handlever, Worm Gear, Electric, Pneumatic

Technical Parameters

ITEM	Standard
Design	EN593 | API609
Face to Face	EN558 | ISO5752 | API608 | BS5155-4
Top Flange	ISO5211
Flange Drilling	PN6 | PN10 | PN16 | ASME B16.5 CL150 | JIS 10K
Pressure Rating	PN6 | PN10 | PN16 | PN25 | CL150 | JIS 10K
Tightness Test	ISO5208 | API598 | EN12266-1