186 visiting now: 154 USA USA flag 27 Belgium Belgium flag 3 Canada Canada flag 2 Hong Kong Hong Kong flag 1 Ireland Ireland flag

Highlighted Companies

Hydraulic Cartridge Relief Valve 2 Stage Buffering Function - China

price: 60.00 Dollar US$

AAK Hydraulic Cartridge Relief Valve with 2-stage buffering function, increased equipment life by 20% Osborne, from Iran, sent us a PO for 500 hydraulic cartridge relief valves today.

I was not surprised by this repeat order, because at the time of inquiry, he said that as long as the quality was stable, he would repeat the order twice a year.

In the second half of last year, their hydraulic pump needed hydraulic cartridge relief valve.

He tried samples from 2 overseas hydraulic cartridge relief valve manufacturers, but the buffering function of the hydraulic cartridge relief valve was ordinary, which affected the operation of the equipment.

Osborne contacted other cartridge valve manufacturers, but failed.

I also don't know how Osborne found AAK hydraulic cartridge valve.

AAK had no customers in Iran before.

He left a message on the AAK website: please provide me your address, I would send you a sample to copy, and the buffering function of the hydraulic cartridge relief valve must be met.

After receiving his hydraulic cartridge relief valve sample, according to his hydraulic system schematic diagram, and the video of equipment commissioning, after discussion of AAK engineers, a plan was worked out.

After 45 days, AAK sent 5 samples of hydraulic cartridge relief valve.

2 weeks later, Osborne sent us an email to inform that the buffer function of AAK hydraulic cartridge relief valve met their equipment requirements.

The first order of 500 hydraulic cartridge relief valves was also attached.

After confirming the delivery date, the full payment was made the next day.

The Iranian customer was so refreshing and efficient, which is out of my expectation.

The two-stage buffer of AAK hydraulic cartridge relief valve can eliminate the pressure pulse of the hydraulic system and improve the service life of the equipment by at least 20%.

The optimized hydraulic cartridge relief valve, when the pressure at the oil inlet reaches the first or second pressure, the two buffer pistons can act successively to realize the opening or closing of the hydraulic cartridge relief valve, absorb the pressure pulse at the oil inlet, and eliminate the system pressure impact.

Here is the structure innovation of the hydraulic cartridge relief valve that AAK works out: 1 - A sliding valve spool is arranged in the valve body cavity of the hydraulic cartridge relief valve.

The left end of the valve rod is sleeved with a two-stage buffer piston, and the valve rod is equipped with a compression spring.

One end of the compression spring is matched with the valve spool, and the other end is connected with the secondary buffer piston, and the sliding rod of the secondary buffer piston is set with the primary buffer piston.

2 - The left port of the valve body is equipped with a plug, which forms a two-stage buffer cavity between the plug and the two-stage buffer piston.

The two-stage buffer cavity is connected with the oil inlet through the two-stage buffer orifice and the valve spool orifice.

3 - The outer peripheral surface of the valve spool head and the peripheral surface of the valve stem cavity are in sliding coordination.

The front end is equipped with a cone sealing head.

The valve body oil drain port is connected with the sealing cavity where the compression spring is located, and the oil outlet is connected with the cavity where the cone sealing head is located.

AAK hydraulic cartridge relief valve made in China, 2-stage buffering function, equipment life increased by 20%, you can also try it! AAK HYDRAULIC CARTRIDGE VALVES (516) 2023-02-28


Company Contact:


  • Phone: +8657483008115

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

  • Email: Email


Published date: March 27, 2023

  • 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



  • Hydraulic Pressure Control Cartridge Valve 3 Innovations
    Hydraulic Pressure Control Cartridge Valve 3 Innovations
    Machine made parts - AAK Industry CO., LTD - China - March 25, 2023 - 60.00 Dollar US$

    AAK Hydraulic Pressure Control Cartridge Valve has 3 innovations, helped Joao solve the equipment vibration Pedro, one of our old Brazilian customers, introduced AAK to Joao in August last year. I thanked Pedro for his trust, but also requested mysel...

  • High Strength Medium Carbon Aisi 1045 Steel Coil
    High Strength Medium Carbon Aisi 1045 Steel Coil
    Machine made parts - Dongguan Songshun Mould Steel Co., Ltd. - China - March 23, 2023 - 900.00 Dollar US$

    AISI 1045 Steel Coil, JIS S45C, DIN C45 AISI 1045 steel coil is a high-strength high-quality medium carbon steel with good weldability, good machinability and impact performance, and it is hot-pressed and cold-pressed into coils with good wear resist...

  • Welded Lamination
    Welded Lamination
    Machine made parts - CHME Components Co., Ltd. - China - March 22, 2023 - contact company for price

    Welded Lamination Product origin: guangdong 15 years OEM and ODM one-stop service, manufacturing all kinds of metal parts, ranging from precision metal parts to large sheet metal stamping parts, according to customer order quantity, we provide the mo...



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"