AAK relief valve strictly controls the roundness error of oil sealing surface within 0.005 - 0.01mm, so as to avoid unbalanced force of pressure regulating spring due to rough circumferential surface, which aggravates the oscillation of poppet valve and causes squeal problem. Dutch customer directly placed an order after comparing several relief valves from different factories.
Recently, a customer mentioned that the relief valves purchased from some manufacturers have a scream after being used for a period of time. After further understanding, it is found that many manufacturers do not control the roundness error of the sealing surface accurately. The test results show that the roundness error of the sealing surface of the pilot relief valve produced by some manufacturers is generally between 0.012 - 0.02, which will inevitably lead to unbalanced force to the pressure spring, aggravate the oscillation of the poppet valve, resulting in squeal phenomenon. www. aakindustry. com
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Trade Leads Directory -> All Trade Leads -> Industrial Supplies -> Valves -> AAK relief valve has never had a squeal problem. Dutch customer order
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