178 visiting now: 163 USA USA flag 12 Belgium Belgium flag 2 UK UK flag 1 Ukraine Ukraine flag 1 China China flag 1 Singapore Singapore flag

Highlighted Companies

After Being Used For 1 Year Aak Hydraulic Counterbalance Valves Still Keeps The Concentricity - China

price: 100.00 Dollar US$

Bill is a purchaser of Manitowoc company in the United States.

Two years ago, AAK received an inquiry about hydraulic counterbalance valves from him, and there were few contacts later.

Unexpectedly, two years later, we received an email from him consulting about the problems of the hydraulic counterbalance valves.

After communication, we learned that a batch of hydraulic counterbalance valves he purchased elsewhere had problems and almost got into a big trouble.

Last summer, a crane shipped by their company, the crane winch system lost control during construction and the hook slipped off.

Fortunately, there was no one under the hook at that time, otherwise there would be great trouble.

According to the analysis of the field engineer, it is considered that the hydraulic counterbalance valve used in the crane winch system is abnormal.

After disassembling the hydraulic counterbalance valve, it is found that there is a deviation in the concentricity between the valve spool and the valve seat.

The valve spool is affected by large eccentric hydraulic force, so that the hydraulic counterbalance valve lost its function of balance and the hook slipped off.

After knowing the reason, Bill contacted the original hydraulic counterbalance valve supplier.

The supplier replied that the hydraulic counterbalance valves were indeed within the warranty period, he can replace the abnormal hydraulic counterbalance valves with a new ones, but can not guarantee that each hydraulic counterbalance valve had the same concentricity and could be used for more than 1 year.

Bill was worried about the stability of the new hydraulic counterbalance valves.

He didn't want to have big trouble and had to find a new hydraulic counterbalance valve manufacturer.

In crane hydraulic system, the performance of hydraulic counterbalance valve is the cornerstone of winch system, and the consistency of hydraulic counterbalance valve concentricity is the key.

Bill also asked other hydraulic counterbalance valve manufacturers.

No factory guarantees that the concentricity of the hydraulic counterbalance valve can be still consistent after 1 year of use.

Bill wants to know how about the concentricity of AAK hydraulic counterbalance valves after being used for 1 year.

We told Bill that perhaps having a try is the best answer.

He can detect the concentricity of AAK hydraulic counterbalance valves in an all-round way.

After 15 days, we sent 4 samples of hydraulic counterbalance valves according to his drawings.

Seven days later, Bill informed us that the concentricity test data of AAK hydraulic counterbalance valves were indeed more comprehensive than that of his original manufacturer.

How to ensure that the concentricity of AAK hydraulic counterbalance valves is still consistent after 1 year of use? For some manufacturers, when processing the components of hydraulic counterbalance valves, there are discrepancies between the specification parameters and design, the standard of normal distribution cannot be reached, there are certain differences in between the structure of components and the concentricity of grooves, which is difficult to detect.

AAK has Mahr cylindricity instrument imported from Germany.

Through EasyForm software, it can measure each part accurately and quickly, and obtain the measurement results.

With the help of computer, the work piece can be quickly adjusted and aligned to improve the measurement efficiency, ensuring the concentricity of each hydraulic counterbalance valve is 100% consistent to reduce wear.

More than half a year later, Bill sent an email saying that another two hydraulic valve manufacturers that he recognized, also provided samples of hydraulic counterbalance valves with AAK together last time.

All the hydraulic counterbalance valves were retested after 6 months of use.

It was found that the concentricity of the hydraulic counterbalance valves from another two manufacturers changed compared with the data before use, but the concentricity of AAK hydraulic counterbalance valves did not change.

The boss asked him to list AAK as the most trusted supplier for their hydraulic counterbalance valves.

AAK hydraulic counterbalance valves, are sophisticatedly inspected, can be used without no trouble.

You are welcome to have a small try! AAK HYDRAULIC VALVE (154) 2022-02-16


Company Contact:


  • Phone: +8657483008115

  • Address: Bona Business Building, No. 456 Taikang Middle Road,, Yinzhou, Ningbo, China, Ningbo , Zhejiang , China

  • Email: Email


Published date: March 25, 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.

Related listings



  • Portable Garden Solar Insect Mosquito Killer Lamp
    Portable Garden Solar Insect Mosquito Killer Lamp
    Horticulture - Aosion International (Shenzhen) Co., Ltd. - China - February 15, 2022 - 7.20 Dollar US$

    This Solar Powered Insect Killer works by attracting the insects and mosquitoes with a UV LED light. This light draws them into the high voltage grid which kills them. Powered by rechargeable battery, which is charged by solar panel built in top of t...

  • European Market Garden Bag 272l D67*h76 Black And Green
    European Market Garden Bag 272l D67*h76 Black And Green
    Horticulture - Yixing Jinguan Weaving Co., Ltd. - China - November 28, 2021 - 1.05 Dollar US$

    Garden Bag is a handy item to have for all your pruning, weeding and potting jobs. Lightweight and durable with two carry handles, you will wonder how you managed without it before. Manufactured from tough, high performance P.E. material, it wipes cl...

  • Wholesale Owl Ceramic Flower Pot Houseplant Planter
    Wholesale Owl Ceramic Flower Pot Houseplant Planter
    Horticulture - Fujian Dehua Su Shi Ceramics Co., Ltd. - China - September 24, 2021 - 3.50 Dollar US$

    Owl ceramic flowerpot, houseplant planter Main business: export home decoration/gardening supplies/holiday gifts. Main markets: North America and Europe. Advantages: Unique design and production capacity, high-quality low-cost products and perfect se...



Safe Trade Tips

  • Ask for business references and check them
  • Use a payment method that offers better protection for all such as Letters of credit and verified professional escrow services. Avoid payments in advance such as money transfers
  • Verify their business via their local Chamber of Commerce
  • Search the internet using their website address, their business name, their phone and fax numbers, and their email addresses to see if you can find any feedback about them.
  • Get to know more about scams and fraud to avoid: Internet Crime Complaint Center - Consumer Financial Protection Bureau
  • This site is never involved in any transaction, and does not handle payments, shipping, guarantee transactions, provide escrow services, or offer "buyer protection" or "seller certification"