DQ41F-16P Low Temperature Ball Valve

Low temperature valves refer to valves that can be used under low temperature conditions. Valves with operating temperatures below -40 ℃ are usually referred to as low-temperature valves. Low temperature valves include low-temperature ball valves, low-temperature gate valves, low-temperature globe valves, low-temperature butterfly valves, low-temperature check valves, etc. They are mainly used in chemical plants such as 300000 tons of ethylene and liquefied natural gas. The output liquid low-temperature media, such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc., are not only flammable and explosive, but also need to be gasified during heating. During gasification, the volume expands hundreds of times. Low temperature valves are one of the indispensable and important equipment in industries such as petrochemicals, air separation, and natural gas. The quality of these valves determines whether they can be produced safely, economically, and sustainably.

Item NO.:
XUVAL33-300
Lead Time:
30 Days
Product Orgin:
CHINA
Brand:
XUVAL
Shipping Port:
Shanghai
Payment:
100%TT
MOQ:
1

Products Details

Main characteristics of low-temperature ball valves:

The flange low-temperature ball valve is divided into two types: low-temperature floating ball valve and low-temperature fixed ball valve. For temperatures above -50 ℃, a long neck structure is generally not used. For ball valves below -50 ℃, the neck length T is generally 250mm, or determined according to our company's design and calculation. Low temperature ball valves are mainly used to output liquid low-temperature media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc. They are not only flammable and explosive, but also need to be gasified during heating, During gasification, the volume expands hundreds of times.

The material of liquefied natural gas valves is very important. If the material is not qualified, it can cause external or internal leakage of the shell and sealing surface; The comprehensive mechanical performance, strength, and rigidity of the components cannot meet the usage requirements or even break. Causing the leakage of liquefied natural gas medium and causing explosions. Therefore, in the process of developing, designing, and developing liquefied natural gas valves, material is the primary and critical issue. The valve body and valve cover adopt LCB (-46 ℃), LC3 (-101 ℃), CF8 (304) (-196 ℃)

The low-temperature ball valve produced undergoes special low-temperature treatment, placing the rough machined parts in the cooling medium for several hours (2-8 hours) to release stress, ensure the low-temperature performance of the material, ensure the precision machining size, and prevent leakage caused by temperature changes during low-temperature working conditions.

Connection form: flange type

Valve materials: LCB, LC3

Working temperature: -46 ℃, -196 ℃

Applicable media: liquefied natural gas, ethylene, propylene, etc

Drive mode: manual, bevel gear transmission, electric

Main component materials:
valve body	0Cr18Ni9
Ball	0Cr18Ni9
valve stem	0Cr18Ni9
Filler and sealing ring	PTFE

Temperature(℃)		LC3>-101,LCB>-46,LCC -46,1Cr18Ni9Ti -196
Material	Valve body, gate, valve cover, bracket	C3、LCB、LCC、1Cr18Ni9Ti
	filler	Asbestos rope soaked in tetrafluoroethylene
	handwheel	QT450-10
	stem nut	ZCuA110Fe3
	valve stem	1Cr18Ni9Ti
	shim	Low-temperature asbestos

Hot tags :

Low temperature valve Low temperature floating ball valve Low temperature fixed ball valve Low temperature manual ball valve Low temperature flange ball valve

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