Under 55 ℃ Aak Hydraulic Relief Valve Still Ensure A Long Service Life - China
price: 100.00 Dollar US$
Vasiliev is a purchaser from an oil field production company in Russia.
Although he has not been in office for a long time, his purchasing is very smooth.
Early last year, he purchased a batch of hydraulic relief valves for the hydraulic system of drilling rigs for oil exploration in Alaska.
The testing on the hydraulic relief valve sample from the original supplier was smooth, but the drilling machine was unable to start after working for about 3 months.
It was judged on site that the hydraulic relief valve in the equipment was leaking.
After further disassembling the hydraulic relief valve, it was found that the O-ring in the hydraulic relief valve was worn and broken.
Vasiliev contacted the original hydraulic valve manufacturer.
The manufacturer replied that the standard nitrile rubber (NBR) O-ring used for this hydraulic relief valve has a service life of at least more than 1 year.
He asked Vasiliev to check the temperature of the working environment.
When he learned that it was extremely cold at - 50 ℃, the manufacturer said that the sealing ring of the hydraulic relief valve can only be replaced once every 3 months, and there is no other alternative sealing ring.
Vasiliev was helpless and had to replace the sealing ring of the hydraulic relief valve to maintain the start-up.
Two months after the new O-ring was installed, the hydraulic relief valve leaked again.
The engineer complained that the hydraulic relief valve purchased by Vasiliev was too unreliable.
Vasiliev has to find new suppliers.
He contacted with more than 30 hydraulic valve manufacturers, including we AAK hydraulic valve.
Nearly all manufacturers replied that under the extremely cold condition of - 50 ℃, it is normal for sealing ring to have a service life of only 2-3 months.
Only a few hydraulic valve manufacturers are willing to test new materials, but the lead time is to be determined.
After receiving the email, AAK just asked about the quantity and delivery date, and told Vasiliev that our product quality can be guaranteed for 1 year under the extremely cold condition of - 50 ℃.
Vasiliev may have realized the AAK hydraulic valve is some different, and asked about 4 why and 3 how in a short email.
We replied that there is no need to make sample for this hydraulic relief valve, because we produced a hydraulic relief valve for a North American customer that was used under similar working conditions the year before last.
It has been used for more than 1 year and there was no complaint about the leakage of the hydraulic relief valve.
Vasiliev was still rather in doubt about this, but he had no other choice except to try AAK hydraulic relief valve, because other hydraulic valve manufacturers either gave up or can not determine the lead time.
After 30 days, AAK delivered the hydraulic relief valve as scheduled.
After the test was normal, the original hydraulic relief valve was replaced.
6 months later, we asked Vasiliev whether the customer complained about the abnormal hydraulic relief valve.
Vasiliev said that AAK hydraulic relief valve was in normal use.
His boss was surprised that AAK had done something that more than 30 other hydraulic valve manufacturers could not do.
Now the new project is to be developed, and the boss requested that the hydraulic relief valve should be purchased from AAK.
AAK hydraulic relief valve uses ZnO / MAA reinforced hydrogenated nitrile rubber (HNBR) O-ring.
The high temperature resistance of this O-ring is 130 ~ 180 ℃, and the cold resistance is - 55 ~ - 38 ℃.
Compared with the ordinary nitrile butadiene rubber ring, silicon rubber, fluororubber, Polytetrachloroethylene O-ring, it has better performance on cold resistance and radiation resistance, is more suitable for extreme cold environment, and can greatly improve the service life of O-ring.
AAK hydraulic relief valve with specially treated hydrogenated nitrile rubber (HNBR) O-ring can still be used for more than 1 year even under the extremely cold condition of - 55 ℃, and this Russian client don't want to find a second hydraulic relief valve supplier any more.
AAK hydraulic relief valve has a service life of at least 1 year under extremely cold conditions of - 55 ℃.
Welcome to have a small try! AAK HYDRAULIC VALVE (147) 2022-02-08
Company Contact:
- Posted By: AAK Industry CO., LTD
- Phone: +8657483008115
- Address: Bona Business Building, No. 456 Taikang Middle Road,, Yinzhou, Ningbo, China, Ningbo , Zhejiang , China
- Email:
- Website: https://www.aakindustry.com/
Published date: March 16, 2022
- Business Description: Focused on the Development and Manufacturing of Hydraulic Valves since 2006, in Ningbo China
Since its establishment 12 years ago, 6 first-line international brand importers have placed orders with AAK for 5 consecutive years, with a re-peat order rate of 62%.
Exported to more than 20 countries, AAK Hydraulic Valves used on "AIRCRAFT" have been supplied to Russian customers.
68%+ of the high precision hydraulic valves exported from Ningbo Port come from AAK hydraulic valves.
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