• 

Description of Cryogenic Gate Valve:The main material of ZECO cryogenic gate valve is selected. Considering from the metallographic aspect, in addition to austenitic steel, copper and aluminum with face centered cubic lattice, general steel will appear low temperature brittleness at low temperature, thus reducing the strength and service life of the valve. When the temperature is higher than -100℃, choose ferritic steel; when the temperature is lower than -100℃, choose austenitic steel; low pressure and small diameter valves can choose copper and aluminum and other materials.Stem and fastener is selected, when the temperature is higher than -100℃, stem and bolt materials adopt Ni, Cr-Mo alloy steel, through appropriate heat treatment, to improve tensile strength and prevent thread bite.Austenitic stainless steel is used when the temperature is higher than -100℃.Low hardness of 18-8 acid resistant steel will cause mutual abrasion between stem and packing, causing leakage of packing.Therefore, the stem surface must be hard chrome plated (thickness 0.04-0.06mm), or nitride and nickel-phosphorous plated to improve surface hardness.In order to prevent nuts and bolts from biting to death, the nuts are generally made of Mo steel or Ni steel and coated with molybdenum disulfide on the surface of the threads.

Features of Cryogenic Gate Valve:1.The valve body of ZECO cryogenic gate valve is able to withstand expansion and contraction due to temperature changes without permanent deformation of the seat structure due to temperature changes;2.The bonnet of ZECO cryogenic gate valve is constructed with a long neck bonnet to protect the stuffing box.The long neck bonnet design also facilitates winding of cooling material;3.ZECO cryogenic gate valve uses flexible wedge or open wedge. These structures maintain a reliable seal regardless of temperature;4.The low temperature properties of the material, such as compression resilience, tightening force, tightening pressure distribution and stress relaxation, are taken into account.

Material of Cryogenic Gate Valve:

We are one of leadingchina ball valve manufacturersand cryogenic ball valve suppliers. Choose us to buy Valve China.

Другие товары поставщика

	Backflow Preventers	Basic informationThis valve is installed at the outlet of the water pump. It can prevent the backflow of the medium, linked with the water pump, an...
	Resilient Gate Valve for Underground	Basic informationThis underground gate valveis used as a two-way closed circuit device.Features1. No need for sluice Wells, which reduces the amoun...
	Bronze Flow Balancing Valve	Festures of BronzeBalancing Valve Good sealing, no penetration, easy to adjust the rotation; Small mounting space, accurate and clear opening ind...
	Home Pressure Reducing Valve	Basic information of Home Pressure Reducing Valve This valve reduces pressure before the water supply system enters the house. Dof960 series of cas...
	4 Inch Gate Valve	Description of 4 Inch Gate Valve: ZECO 4 flanged gate valveis one of the most commonly used calibers. Gate valve in the line just switch effect, lo...

Похожие товары

	China Gate valve	Продавец: Yuanda Valve Group Co.,Ltd.	China Gate valve China Gate valve A is a type of valve that uses a gate or wedge-shaped dis...
	Gate Valve Vs. Ball Valve	Продавец: Yuanda Valve Group Co.,Ltd.	Gate Valve Vs. Ball Valve Gate valves and ball valves are both types of valves that are used...
	Non Return Valve Suppliers China	Продавец: Yuanda Valve Group Co.,Ltd.	Non Return Valve Suppliers China refers to the opening and closing member for the circular v...
	Common Types Of Check Valves	Продавец: Yuanda Valve Group Co.,Ltd.	Common Types Of Check Valves A is a valve whose switching parts are disc-shaped and rely on ...
	Brass ball valve	Продавец: Yuanda Valve Group Co.,Ltd.	Brass ball valve Brass ball valve Applications: Water Supply: Commonly used in residentia...