该产品的顶盖是采用快关原理设计，带一个顶置螺纹口压板，方便打开和关闭并有良好的密封效果；另外增大滤订表面到布水头的距离，从而提高过滤阶段的布水效果，并避免在反冲洗时砂粒落入布水管内。

New spiral cover system which aids the operations of opening and closing.The air purge is built into the cover which can be efficlen to release the air from the filter.The distance between the upper part of the sand layer and the diffuser the filtation phase and avoid sand being spilt into he drain during backwash..

 供仅参考M20（0.4-0.8mm）的白色石英砂

注:最大工作压4kg/cm3;最大工作作温度50℃(122＂f)

Use only#20 white siwnd,size range 0.4.0.8mm

NOTE:Macirtium working pressure:4kg/cm3;maximum temperature:500c((122＂F)

   顶出砂缸连螺丝型六向阀是适用于地面、地上游泳池和水景过滤设备的首选。为使用者提供了经济，高性能，低维护的最佳装备。经久耐用，耐腐蚀，超厚的玻璃纤维缸体确保砂缸具有更长寿命。

The top mount sand filters with six-way bolt type valve ate most recomme-ndable equipment for the application of in ground or above ground wsimming p-ools ,water features .Offering the best combination of economy.performance,drabilityand mainenance.Corrosion-resistant,extra-thick molded fibreglass tank assures long service olfe.

供仅参考M20（0.4-0.8mm）的白色石英砂

注:最大工作压4kg/cm3;最大工作作温度50℃(122＂f)

Use only#20 white siwnd,size range 0.4.0.8mm

NOTE:Macirtium working pressure:4kg/cm3;maximum temperature:500c((122＂F)