German standard ductile iron elastic seat sealing gate valve

Characteristics of German standard ductile iron elastic seat seal gate valve:

Flat bottomed valve seat:

Traditional gate valves often accumulate in the groove at the bottom of the valve due to external objects such as stones, wooden blocks, cement, paper scraps, debris, etc. after flushing the pipe with water, which can easily cause leakage due to the inability to close tightly. The bottom of soft sealed gate valves adopts a flat bottom design similar to that of water pipes, which is not easy to cause debris accumulation and ensures smooth and unobstructed fluid flow

Overall encapsulation:

The valve plate is made of rubber for overall internal and external sealing. Rubber vulcanization technology enables the vulcanized valve plate to have accurate geometric dimensions, and the rubber is firmly connected to the ductile iron valve gate plate, which is not easy to fall off and has good elastic memory

Non corrosive:

The valve body is coated with powder epoxy resin, which can prevent corrosion and rust of the valve body and can be used in sewage systems

Not easily broken:

In the past, traditional cast iron gate valves often suffered from fractures due to external objects hitting, colliding, or overlapping. Due to the use of ductile iron in this valve, this situation can be significantly reduced

" O" Type ring sealing ring:

Due to the use of three valve stems; O" The sealing design of the ring seal can reduce the frictional resistance during switching, significantly reduce water leakage, and allow for uninterrupted construction and replacement of the sealing ring

Helps with drinking:

Due to the epoxy resin coating inside the valve body, the inner and outer surfaces of the gate are covered with rubber to prevent rust or corrosion, making it suitable for drinking

Precision cast valve body:

The German standard ductile iron elastic seat sealing gate valve is cast, which ensures the sealing performance of the valve without any precision machining inside the valve body

Lightweight:

This valve is made of ductile iron casting, which reduces the weight by about 20% -30% compared to traditional gate valves, and is easy to install and maintain

Operation of German standard ductile iron elastic seat sealing gate valve:

1、 The opening and closing direction of the elastic seat sealing gate valve should always be clockwise when operated

2、 Due to the frequent manual opening and closing of pneumatic valves in the pipeline network, the opening and closing speed should not be too high, even for large-diameter valves, it should be within 200-600 revolutions

3、 For the convenience of one person's opening and closing operation, the opening and closing torque should be 240N-m under pipeline pressure conditions

4、 The opening and closing operation end of the elastic seat sealed gate valve should be square tenon, standardized in size, and face the ground, so that people can directly operate it from the ground. Valves with discs are not suitable for underground pipelines

5、 Display panel for the opening and closing degree of elastic seat sealed gate valve

① The scale line for the opening and closing degree of elastic seat sealed gate valve should be cast on the gearbox cover or the outer shell of the display panel after changing direction, all facing the ground, and the scale line should be brushed with fluorescent powder to show visibility

② If the material of the indicator disk needle is well managed, stainless steel plate can be used. Otherwise, it is a painted steel plate and should not be made of aluminum sheet

③ The indicator pin should be prominent and securely fixed. Once the opening and closing adjustment is accurate, it should be locked with rivets

6、 If the elastic seat sealing gate valve is buried deep and the distance between the operating mechanism and the display panel and the ground is ≥ 1.5m, an extension rod facility should be installed and firmly fixed for people to observe and operate from the ground. That is to say, the opening and closing of valves in the pipeline network is not suitable for underground operations