For the 450bar pressure resistant and abrasion free hydraulic relief valve, only HAWE and AAK have b
Gonzalo comes from Spain and has been purchasing hydraulic valves from Chinese manufacturers for 3 years. At the beginning of last year, they developed hydraulic gantry shears and needed to purchase hydraulic cartridge relief valves. The engineer directly purchased German HAWE standard parts, and the prototype was commissioned and purchased. The boss asked to reduce the purchase cost to match the market price of similar equipment. After comparing prices, Gonzalo selected a hydraulic relief valve manufacturer in Ningbo. 6 months after the equipment was sold, the customer complained that the hydraulic gantry shear was weak. During after sales service, the valve spool of the hydraulic relief valve was found to be worn and could only be replaced. The original manufacturer fed back that the service life of the hydraulic relief valve under 450bar high-pressure working condition was normal for 6 months. The boss was not happy. Gonzalo was under pressure.
His engineer said that the service life of the HAWE hydraulic relief valve was no less than 1 year. Gonzalo contacted more than 10 hydraulic relief valve manufacturers, they could not bear high pressure or can not guarantee a service life of more than 1 year. Gonzalo found AAK in Google\'s China hydraulic valve manufacturers list. When he learned that AAK had engineer from HAWE, he saw hope. According to his hydraulic relief valve drawing, it is not too difficult, just needs to be high pressure resistance and performance.
Because we have no program for this HAWE hydraulic relief valve, we need time to develop it. After 45 days, we delivered 80 samples of hydraulic relief valves, and told Gonzalo that if you replace those complained hydraulic relief valves with AAK\'s, you will have no pressure. A few days ago, Gonzalo sent an email. It has been proved that AAK\'s hydraulic relief valves can last for 1 year under high pressure of 450bar, more than twice as long as that of the original hydraulic valve manufacturer.
In the subdivision field of high pressure resistance, AAK hydraulic valve manufacturing quality benchmark is HAWE, because HAWE is the No 1 of this field. We mainly focus on 3 points. It may be difficult to find the second one, from more than 200 hydraulic valve manufacturers in Ningbo.
Strict selection of materials: YG8 cemented carbide is selected for the valve spool of this hydraulic relief valve, and the content of tungsten carbide (WC) and binder cobalt (CO) is the best of the same kind of steel. The wear resistance and impact resistance have been improved by more than 2 times. Under the pressure of 450bar, there is no wear within 1 year.
The control equipment: the valve spool of this hydraulic relief valve is finely processed with a Swiss high-precision honing machine. The precision of the valve spool is fixed at 1-2μm, surface roughness Ra0.2-0.3, which is difficult for most manufacturers to achieve.
100% testing: AAK independently developed durability testing equipment, implemented NFPA/T2.6.1 standard, and each hydraulic relief valve was inspected. Most manufacturers conduct selected checks and do not have good testing equipment.
AAK hydraulic relief valve, resistant to 450bar high pressure, durable for more than 1 year, benchmarking HAWE, you can also try a small order!
AAK HYDRAULIC CARTRIDGE VALVES (349) 2022-09-14
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