Picture of flow limiting check valve

The left image isPicture of flow limiting check valveAs shown in the diagram, this valve belongs to the hydraulic control valve series, consisting of a conduit and a pilot valve. The image on the right is taken from the head, with the blue main body indicating the valve seal, which can be disassembled. We use spray coating technology for the appearance of the flow limiting check valve, with the outside sprayed with plastic, resulting in a smooth and beautiful appearance. Flange connection method, standard connection size.

Puhui brand flow limiting check valve

　　LH45-16 series flow limiting check valveIt is mainly used when multiple pumps are connected in parallel and installed at the pressure outlet of the water pump to limit the working flow of the water pump and prevent backflow when the pump is stopped. The valve adopts a pilot valve main valve structure, which is compact in structure and lightweight.

Model parameters of flow limiting check valve

1. Type of limiting check letter: LH45, LH45 limiting check valve.

2. Specification caliber: Supply caliber: DN40-DN600； Specifically, there are, m、DN50mm、DN65mm、DN80mm、DN100mm、DN125mm、DN150mm、DN200mm、DN250mm、DN300mm、DN350mm、DN400mm、DN450mm、DN500mm、DN600mm。

3. Pressure level: There are three pressure levels: 1.0MPa, 1.6MPa, and 2.5MPa. (Pressure: 10kg, 16kg, 25kg.)

4. The medium is clear water.

5. The appearance color can be customized, usually blue. Wooden crate packaging with complete copper fittings for easy on-site installation and use during shipment.

Installation of flow limiting check valve

The selection of the type of flow limiting check valve is usually based on the diameter of the pipeline; The flow direction of the medium during the installation of the flow limiting check valve should be consistent with the direction of the arrow on the valve body; The external pressure pipe device passes the pressure test before leaving the factory, and it is strictly prohibited to damage the pressure pipe device during installation; The 1/2 pipe joint on the valve should be installed at the inlet of the water pump; It can be installed horizontally or vertically.

Function and main principle of LH45-16 series flow limiting check valve

1. Current limiting function
The LH45-16 flow limiting check valve is installed at the outlet of the water pump, which limits the flow of the working pump during single pump start-up and non full design working pump operation, allowing the pump to operate in a relatively stable state; Prevent the motor from experiencing overload when the water pump has low head, high flow, and low efficiency; Prevent the occurrence of motor burnout caused by excessive rated current, while also achieving energy-saving effects.
The limiting principle of LH45-16 limiting check valve is: based on the design operating point head of the water pump, the LH45-16 limiting check valve pilot valve automatically detects and controls the actual working head of the water pump to limit the working flow of the water pump and limit the load of the motor.

Technical parameters of LH45-16 series flow limiting check valve:

The LH45-16 flow limiting check valve is set with a control working head. When the working head of the water pump is lower than the control head, the valve will close to increase the actual working head; When the working head of the water pump is greater than the set head, the valve is fully open and the valve resistance is small.
The head control of LH45-16 current limiting check valve can be set according to the rated current of the motor or the operating conditions. The working head setting value of this valve is adjustable, and the general factory setting value is the design operating condition head.
2LH45-16 series flow limiting check valveCheck function
The check function of this valve is equivalent to a micro resistance slow closing check valve, with no closing noise and zero backflow.

Puhui Valve, LH45-16 flow limiting check valve, free installation plan provided Looking forward to your call: 0317-8294124! Similar products: Puhui400X flow control valve, InclusiveSelf operated flow control valve, InclusiveSP45F-11 digital locking balance valve！