For Hydraulic Cartridge Direct-Acting Relief Valve equivalent to SUN RDFA, a Russian customer decided to move the order to AAK finally

China [CN]

This week, we’d like to introduce a Hydraulic Cartridge Direct-Acting Relief Valve equivalent to SUN standard part RDFA.

The direct-acting relief cartridges are normally closed, pressure-limiting valves used to protect hydraulic components from pressure transients. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to limit the pressure rise. These valves are smooth and quiet, essentially zero leak, dirt tolerant, immune to silting and are very fast.

Last year, one of our Russian customers sent inquiry for model RDFA Direct-Acting Relief Valve, 10 pcs for trial order and 500 pcs for annual order. At that time, AAK did not have existing procedure for this model yet, and it takes at least 30 days for us to develop it. The customer did not have time to wait and purchased the existing stocks from another hydraulic cartridge valve manufacturer in Ningbo China. But they have been purchasing other hydraulic cartridge valves as well as customized hydraulic manifolds from AAK, and are very satisfied with the quality.

At the beginning of this year, they checked with us again if AAK can provide RDFA Direct-Acting Relief Valve now, because the valves they purchased from AAK have the longest average service life, they want to buy this model from AAK. We delivered 10 pcs of testing samples on March. Last week, we received the 500 pcs of annual order for RDFA from this Russian customer, which means that AAK samples have passed their testing.

AAK hydraulic cartridge direct-acting relief valve 2 advantages:

1. Function and Performance benchmarking SUN

2. Its service life is 2 times that of its domestic peers

Technical parameters of AAK E-RDFA Hydraulic Direct-Acting Relief Valve: 

Max. Operating Pressure: 350 bar (5000 psi)

Flow: 200 L (50 gpm)

Internal Leakage: 10 drops/min

Temperature: - 30 to +100 °C (with Standard Buna N seals)

Cavity: T-3A

Fluids: Mineral based or synthetic hydraulic fluid with lubricating properties

Fluid Viscosity Range: 7.4 to 420 cSt

AAK E-RDFA hydraulic cartridge Direct-Acting Relief Valve, equivalent to SUN RDFA, and the service life is 2 times of its domestic peers. You are welcome to try it out.

AAK HYDRAULIC CARTRIDGE VALVES (744) 2023-12-25

https://www.aakindustry.com/info-detail/relief-valves-aak744