L20230 type of low temperature control valve

L20230-type low-temperature control valve, the use of seat-oriented imbalance within the structure, with excellent dynamic stability and seat sealing performance. Stem seal with bellows seal and standard stuffing box seal dual measures in the cryogenic conditions are not under the influence of low temperature medium and effectively ensure the absolute sealing of the valve stem and the stability of the movement sensitivity. The valve body and related materials are made of austenitic stainless steel or aluminum-magnesium alloy that is resistant to cold and low temperature to ensure the strength of the valve in cryogenic conditions. Seat-oriented unbalanced quick-release inner structure, DN100 caliber can be selected below the outer valve cover structure, so that the maintenance of low-temperature valve is very convenient. According to the conditions can choose a balanced internal parts, or noise reduction, anti-cavitation and other special cage parts.

(For details of the internal parts, please refer to the relevant internal structure control valve)

L20230 type of low temperature control valve

L20230 type of low temperature control valve

Control valve parameter description

Trim features: seat-oriented unbalanced interior quick-release structure

Cage seat (for stainless steel body)

Cryogenic environment with the valve seat (aluminum body)

Extracting on the valve cover parts (DN100 caliber optional)

Body Type: Straight-through angle z-shape

On the bonnet type: Elongated type of external pumping type elongation type

Temperature range: -196 ℃ ~ 300 ℃

Stem seal type: Standard packing seal bellows seal

Standard leakage class: CLASSV (standard, metal seat)

CLASSVI (DN100 caliber optional below, soft seat)

Flow characteristics: equal percentage line

Connection with the pipeline: the flange welded

Adjustable ratio: 50: 1

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Movable Oil Purifier

Movable Oil Purifier is the oil infusion and purification device, which is developed by our company, has practical design, can convenient move and simple maintain, with low noise,high adsorption and stable operation.


The pipeline is provided with overflow protection device, can efficiently protect safety of hydraulic pressure system. It adopts thermal relay protection to prevent motor from damage caused by overloading. The coarse filter in suction orifice can protect oil pump and increase service life of filter; there are two-stage fine filters in back of the pump, which can make oil rapidly achieve high cleanliness. We can design fine filter precision according to customer requirement, in order to achieve required service condition.


The filter shell adopts quick open structure, can rapidly open upper cover and replace filter cartridge without using any tools. The pressure gauge is installed on control panel to continuous indicate operation condition of system and pollution condition of cartridge during working.



movable oil purifier


Product Application

-The oil infusion and purification for hydraulic and lubricant system.

-As a by-pass filter in hydraulic and lubricant system during working.

-Cycle filtering before operation of hydraulic and lubricant system.

-The oil in hydraulic and lubricant system will not be discharged from filter pump.

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Xinxiang Shengda Filtration Technique Co., Ltd. , https://www.shengdafiltration.com