Rubber-coated check valve manufacturers take you to understand where the check valve is installed
Rubber-coated check valve manufacturers take you today to discuss the installation position of the check valve. How to determine the installation position of the check valve? What is the difference between installing a check valve in front of the pump and installing a check valve behind the pump, and where is the installation in front of the pump suitable for? The rubber-coated check valve manufacturer tells you that the check valve is usually used with other valves, so when it is used with other valves, where should the check valve be installed?
The check valve, also known as the check valve, is an automatic valve. It relies on the pressure of the flowing medium in the pipeline to push the valve flap to realize the closing and opening of the valve. When the medium stops flowing and the check valve flap is closed, it can effectively Prevent the backflow of the medium in the pipeline, which plays a great role in ensuring the safety of the pipeline.
According to the structure, check valves can be divided into three types: lift check valves, swing check valves and butterfly check valves. Rubber-coated check valve manufacturers tell you that lift check valves can be divided into vertical and straight-through types. The swing check valve is divided into three types: single-lobe, double-lobe and multi-lobe. Butterfly check valve is divided into butterfly double flap and butterfly single flap. The connection form of the above check valves can be divided into four types: threaded connection, flange connection, welding and wafer connection.
The rubber-coated check valve manufacturer tells you that the installation of the check valve is to ensure the flow direction of the water inside the pump, so as to ensure the normal operation of the pump. Therefore, regarding the installation position of the check valve, whether it is installed in front of the water pump or after the water pump can be divided into two situations:
One is installed at the end of the vertical suction pipe in front of the water pump, also called the bottom valve. The purpose is to fill the water pump once without pumping water, because when there is no water in the water pump and the suction pipe in front of the pump, the water pump can only be idling and cannot pump water, so the water pump must be filled with water before water can be pumped out. The installation of this kind of water pump is a method when it is higher than the liquid level, also called the negative pressure method.
The manufacturer of the Rubber-coated check valve tells you that the other is to be installed at the back of the water pump. This installation method is that when the liquid level is higher than the water pump, it is convenient to start and stop the water pump without closing the water outlet valve of the water pump, especially for the main control water pump system, to prevent backflow.
The check valve must be installed at the pump outlet, before the outlet control valve, in order to access the check valve. The rubber-coated check valve manufacturer tells you that the first outlet of the general pump is the soft connection (shock absorber), the next is the check valve, and then the next is the isolation valve (such as butterfly valve, gate valve, globe valve, etc.).