阀门井因为是管道的枢纽，所以其自身有以下几个要求：
Valve well is the hub of pipeline, so it has the following requirements:
1：阀门井本身不能渗水，必须保证其密封性；
1: The valve well itself can't seep, so its sealing must be ensured;
2：给水管道在使用过程中，管道会受到来自不同方面的压力，从而会产生不同程度的抖动或沉降，即要求给水管道与阀门井的连接方式要可靠，能够适应一定程度的抖动和沉降，而不会使水渗进井室；在埋地很深的阀门井管道稍大时一般都采用铸铁阀门（如截止阀，蝶阀等）铸铁阀门长期在水里浸泡，会影响其使用寿命或引起断裂，因此对密封性的要求更高；
2: In the process of using the water supply pipeline, the pipeline will be subject to pressure from different aspects, resulting in different degrees of shaking or settlement, that is, the connection mode between the water supply pipeline and the valve well should be reliable, able to adapt to a certain degree of shaking and settlement, without water seepage into the well chamber; Cast iron valves (such as globe valves, butterfly valves, etc.) are generally used when the buried valve well pipeline is slightly large. Long term immersion of cast iron valves in water will affect their service life or cause fracture, so the requirement for sealing is higher;
3：阀门井井筒与井体、井盖的连接方式要可靠，不能因为大雨或积水就渗水进入井室里。
3: The connection between the valve well bore and the well body and the well cover should be reliable, and water should not seep into the well chamber because of heavy rain or ponding.
4：阀门井是埋设于地下的，要承受检查井钢模具 隔离墩模具 隔离墩钢模具 流水槽模具 U型槽模具 螺杆启闭机 卷扬式启闭机 铜雕佛像来自各个方向的不同压力，和不同化学物质的腐蚀和侵害，及要求其承压能力和耐酸碱腐蚀性要好。
4: The valve well is buried underground, which has to bear different pressures from all directions and the corrosion and infringement of different chemical substances, and its pressure bearing capacity and acid alkali corrosion resistance are required to be better.