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1：液壓系統(tǒng)用的介質(zhì)必須過(guò)濾，過(guò)濾精度至少20um。 
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2：液壓系統(tǒng)用的油箱必須密封；并加空氣過(guò)濾器。 

3：不帶底板。 

4：固定螺栓請(qǐng)按樣板中列的參數(shù)選用。 

5：與閥連接的表面粗糙度要求：0.8。 

6：于閥連接的平面度要求0.01/100mm。 

內(nèi)部抵抗、許容背壓大幅提高。 

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