The use of an automatic coupling device on submersible pumps makes installation and maintenance convenient. Without the automatic coupling device, fixed installations require maintenance personnel to enter the water to unscrew bolts in case of pump failure, lift the pump out for repair, or use a smaller pump to remove the water before entering for maintenance. If the water quality is very dirty, it becomes difficult for personnel to enter, leading to significant difficulties in maintenance. However, with the automatic coupling device of the GAK type submersible sewage pump, when it needs to be lifted, personnel can do so without entering the water to unscrew bolts, simply lifting the pump. After maintenance, descending along the guide rail allows for the sealing of the pump and pipeline, ensuring normal operation. Smaller sewage pumps can be installed freely, while larger models typically come with an automatic coupling device for easy automatic installation and maintenance.

Submersible sewage pump features automatic coupling installationThe benefits:

1. Compact in design and with a small footprint, the sewage pump can be directly installed in the sewage pool due to its submersion in liquid, eliminating the need for a dedicated pump house. This saves a significant amount of land and construction costs. Installation and maintenance are convenient. Small sewage pumps can be installed freely, while large models typically come with an automatic coupling device for easy installation and maintenance.

2. Long continuous operation time. Due to the pump and motor being coaxial, the shaft is short, and the rotating parts are lightweight, resulting in a relatively smaller load (radial) on the bearings. This significantly extends the pump's lifespan compared to typical pumps. There is no cavitation damage or issues with filling and draining water. Particularly, the latter greatly facilitates operators.

　　3. Submersible effluent pumps and submersible drainage pumps are used for drainage within the building.Vertical sewage pumps and horizontal wastewater pumps, etc. Due to the generally smaller space within buildings, with low drainage volume, submersible sewage pumps and submerged drainage pumps can be prioritized for drainage pump selection, among which the submerged sewage pumpVertical sewage pumps and horizontal sewage pumps are generally used in important locations; they require vibration isolation foundations, self-priming suction, and occupy a certain amount of space, thus they are less commonly used in buildings. The flow rate of drainage pumps should be selected based on the design second flow rate for domestic wastewater.

The GAK type submersible sewage pump automatic coupling device is generally developed in two versions: cast iron and stainless steel, depending on the varying operational environments. The automatic coupling device guides can also be custom-made in welded steel pipe, seamless steel pipe, or stainless steel pipe.

Jiangsu Environmental Protection has configured several types of cast iron automatic coupling devices:

GAK50 Submersible Sewage Pump Automatic Coupling Device (Cast Iron)

GAK65 Submersible Sewage Pump's Automatic Coupling Device (Cast Iron)

GAK80 Submersible Sewage Pump's Automatic Coupling Device (Cast Iron)

GAK100 Submersible Sewage Pump's Automatic Coupling Device (Cast Iron)

GAK150 Submersible Sewage Pump's Automatic Coupling Device (Cast Iron)

GAK200 Type Submersible Sewage Pump Automatic Coupling Device (Cast Iron)

GAK250 Submersible Sewage Pump Automatic Coupling Device (Cast Iron)

GAK300 Submersible Sewage Pump's Automatic Coupling Device (Cast Iron)

GAK350 Submersible Sewage Pump with Automatic Coupling Device (Cast Iron)

GAK400 model submersible sewage pump's automatic coupling device (cast iron)

GAK450 Submersible Sewage Pump with Automatic Coupling Device (Cast Iron)

GAK500 Automatic Coupling Device (Cast Iron) for Submersible Sewage Pumps

GAK600 Submersible Sewage Pump with Automatic Coupling Device (Cast Iron)

Our company currently offers the following types of stainless steel automatic coupling devices:

GAK50 Model Submersible Sewage Pump with Automatic Coupling Device (Stainless Steel)

GAK65 model submersible sewage pump with automatic coupling device (stainless steel)

GAK80 Automatic Coupling Device for Submersible Sewage Pumps (Stainless Steel)

GAK100 Automatic Coupling Device for Submersible Sewage Pumps (Stainless Steel)

GAK150 Automatic Coupling Device for Submersible Sewage Pumps (Stainless Steel)

The Duwan Quick Automatic Coupling Device for Submersible Pumps belongs to the pipeline connection field. It is composed of guide rails, guide wheels, fixed outlet elbow, coupling plate, connecting plate, and limit rod, etc. Its characteristic is that the pump body is connected and sealed with the fixed outlet elbow through these components without using bolts, ensuring concentricity. This feature allows for the pump body to be directly lifted out of the well for maintenance without the need to dismantle it inside the well, and the installation can be achieved by simply lowering the pump body along the guide rail.