Soosung Valve Ind. Co., Ltd. that achieves best quality and customer satisfaction
Cryogenic Process
![](http://duocheck.co.kr/wp-content/uploads/2023/03/cp01.jpg)
STEP 1
Jig assembled to the valve
![](http://duocheck.co.kr/wp-content/uploads/2023/03/cp02.jpg)
STEP 2
In a tank of LN2 Charge
![](http://duocheck.co.kr/wp-content/uploads/2023/03/cp03.jpg)
STEP 3
Cryogenic stabillzation
![](http://duocheck.co.kr/wp-content/uploads/2023/03/cp04.jpg)
STEP 4
Cryogenic test Progress
![](http://duocheck.co.kr/wp-content/uploads/2023/03/cp05.jpg)
STEP 5
Cryogenic test Progress
![](http://duocheck.co.kr/wp-content/uploads/2023/03/cp06.jpg)
STEP 6
Cryogenic test complete
![](http://duocheck.co.kr/wp-content/uploads/2023/03/cp07.jpg)
STEP 7
Return to room temperature test
![](http://duocheck.co.kr/wp-content/uploads/2023/03/cp08.jpg)
STEP 8
Packing after nitrogen gas plush packing
Test Facilities for Cryogenic Service
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Facilities01.jpg)
Safety Guard
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Facilities02.jpg)
Gas Booster System
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Facilities03.jpg)
Cryogenic Test
Test Facilities for Cryogenic Service
- Assemble the valve that completed cold emulsion treatment and install it to the flanges for enabling the test. Input and output port shall be made on the flanges in advance.
- Submerge the valves installed to the flanges into the vessel of liquified Nitrogen Gas with the vertical arrangement for cryogenic status.
- Allow enough time for the submerged valves until the temperature of valve reaches to -196°C.
- Under the cryogenic status, inject the nitrogen or helium gas into the flanges at the applicalbe pressure.
- Measure the leaked volume of nitrogen or helium gas from the seat area for the duration of one minute. Measured leak volume shall be decided for acceptance or non-acceptance in accordance with the criteria to BS 6364, that is, 200mm/sXDN(12ccXDN).
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cryogenic01.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cryogenic02.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cryogenic03.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cryogenic04.png)
Cleaning Process
STEP 1
![](http://duocheck.co.kr/wp-content/uploads/2023/04/Cleaning01_en.png)
STEP 2
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cleaning02.png)
STEP 3
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cleaning03.png)
STEP 4
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cleaning04.png)
STEP 5
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cleaning05.png)
STEP 6
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Cleaning06.png)
Cleaning Room Facility
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Room-Facility01.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Room-Facility02.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Room-Facility03.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Room-Facility04.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Room-Facility05.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Room-Facility06.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Room-Facility07.png)
![](http://duocheck.co.kr/wp-content/uploads/2023/03/Room-Facility08.png)