The bottom valve is composed of a valve body, a valve cover, a valve flap, a sealing ring and a gasket. The valve flap of the bottom valve has several types, such as a single flap, a double flap and a multi-lobed. After the bottom valve is connected to the pipeline, the liquid medium enters the valve body from the bonnet direction, and the pressure of the liquid acts on the valve flap, so that the valve flap is opened to allow the medium to flow, and when the medium pressure in the valve body changes or disappears, the valve flap Turn off to prevent media from going backwards.
Overview
The bottom valve in English is the Foot Valve or Bottom Valve, which is actually a kind of check valve, which plays a role in preventing water from flowing backwards.
The bottom valve can be divided into plastic bottom valve and metal bottom valve according to material, and can also be divided into ordinary bottom valve and bottom valve with backwashing flow.
The bottom valve is mainly used in mechanical equipment for treating slurry such as water pump. Usually the bottom valve will be installed at the bottom end of the water pump underwater suction pipe to prevent slurry backflow.
At present, the quality of the bottom valve of domestic brands is generally poor, such as poor sealing, water leakage problems, etc., so that the system is difficult to achieve automatic control, each time need to fill the straw, it is very troublesome.
Characteristics
The bottom valve is an energy-saving valve. It is generally installed at the bottom end of the water pump underwater suction pipe, which restricts the liquid in the water pump pipe from returning to the water source, and functions as an inaccessible. There are many water inlets and ribs on the bonnet, which are not easy to block, and are mainly used in pumping pipelines. The role of waterways and supports. The calibers are single-lobed, double-lobed, multi-lobed, flanged and threaded. Other names: internal thread lift bottom valve --- bottom valve, water suction valve, water filter valve, shower head; lift bottom valve -- flange bottom valve; swing open bottom valve -- flange swing well Bottom valve.
The bottom valve is welded to the bottom of the container for optimum venting, cleaning and disinfection. In addition, the working medium can be well mixed according to the various process requirements in the operation process. The bottom valve is as close as possible to the bottom wall of the tank to achieve a dead angle effect.
1. The structure is ideal both in terms of flow rate and process requirements, and there is no turbulence in the case of emptying.
2. Interfaces for all current international standards, such as welded, clamped or threaded.
3. The valve body materials are US304.SUS316L. Of course, other alloy steels can be used according to customer requirements.
4. The surface of the valve body can be mechanically polished or electropolished according to customer requirements, and the precision can reach 0.25um.
5. The bottom valve can be equipped with manual or pneumatic. Each pump should be equipped with a bottom valve. The bottom valve is usually installed below the water surface, while the water-type bottom valve is installed above the water surface. It is an updated product of the old-style bottom valve. It is an ideal water diversion equipment and can also replace vacuum pumps and vacuuming devices.
The bottom valve has reasonable design, advanced manufacturing process, and convenient installation, use and maintenance. It has the advantages of small friction resistance, long service life and energy saving. It is widely used in pumping facilities in petrochemical, chemical, textile, printing and dyeing, metallurgy, mining, irrigation and drainage industries.
Forging is a processing method that uses a forging machine to apply pressure to a metal blank to plastically deform it to obtain a forging with certain mechanical properties, certain shape and size. One of the two major components of forging (forging and stamping)
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