Oilfield Back-Pressure Sustaining Valve/Oilfield Back-sostenedora de presión Válvula

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Shanghai
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10 set
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100 set/month

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Product Description:

The check valve is also called or a one-way valve, its role is to prevent 

the backflow medium pipeline.The bottom valve of the pump suction 

off also belong to the check valve class.Open-close part by medium 

flow and power to open or closed, to prevent the backflow medium 

valve check valve.Check valve belong to automatic valve class, mainly 

for the one-way flow of medium pipeline, only allowed to medium 

flows in one direction, in order to prevent accidents.

Usually, the fluid under pressure to make the disc of the valve opening, 

and exported from flow inlet side to side.When the import side pressure 

is lower than the export side, the disc under the action of fluid pressure 

and gravity itself automatically to channel closed, to prevent fluid backflow.

Disc in different ways, according to the check valve is mainly divided into the 

lift, swing and butterfly 3 classes.Lift check valve body more similar to cut-off 

valve body, the fluid resistance is larger.This type of check valve for high 

pressure small, often using the disc and spherical shape.Swing check valves
on the fluid resistance is small, suitable for medium and small size, low pressure, 

large diameter pipelines, often on the channel baffle valve set up multiple disc, 

become more disc type.Similar to the shape of the butterfly check valve and 

butterfly valve.It has simple structure, small resistance for fluid.Check valve such 

as closing too fast, could cause a liquid in the liquid pipe, noise, and even cause 

the damage of valve parts.In order to avoid this kind of situation, when need can

 choose buffer function of the check valve, extend the closing time.

 

FAQ

We have organized several common questions for our clients,may help you sincerely:

①How about your company?

A world class manufacturer & supplier of castings forging in carbon steel and alloy steel,is one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirements.

②How to guarantee the quality of the products?

We have established the international advanced quality management system,every link from raw material to final product we have strict quality test;We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

③How long can we receive the product after purchase?

In the purchase of product within three working days, We will arrange the factory delivery as soon as possible. The pecific time of receiving is related to the state and position of customers.Commonly 7 to 10 working days can be served.


 

 

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Q:The role of the clip lift check valve
Among them, the internal check valve, butterfly check valve belongs to this type of valve, which includes swing check valve and lift check valve. The swing check valve has a hinge mechanism and a gate like valve free against the inclined seat surface. In order to ensure that the valve can reach the appropriate position of the seat surface at any time, the disc is designed in the hinge mechanism so that the disc has enough swing space to make the disc real and comprehensive contact with the valve seat. The disc can be made of either metal or leather, rubber, or synthetic coverage, depending on performance requirements. The swing check valve is almost completely open and the fluid pressure is almost unimpeded, so the pressure drop through the valve is relatively small
Q:Why is the intelligent water meter equipped with a check valve, still can not prevent the water meter idling?
2.3 installation methods and installation quality2.3.1 since the water meter is now out of the door, most of the units are all concentrated in one box and installed on the first floor. Taking into account the freezing cold winter and the meter, with 6 or 12 meter with a diameter of 40mm- 50mm diameter pipe, tables and small spacing and straight sections set aside less water, this will also affect the normal water metering, causing water rotation.2.3.2 installation quality, pipeline projects are basically buried in the ground or in the wall, is a hidden project. National construction standard pipe provides various pipe pipeline construction installation requirements, construction process, acceptance criteria and matters needing attention, but in the construction site, some managers do not according to the requirements of the code construction, more or less there are some quality problems caused by pipeline.
Q:What are the ten major brands of copper check valves?
I knew that:1, Amico2, Jie Kelong3 crown4, good day5, KITZ
Q:Furnace blower outlet check valve what
Must install check valve to prevent downtime fan reversal
Q:If there is no check valve, there will be a reverse flow of water, what is the damage to the pump?
For the work of the pump, when stopped, the water will reverse the impact of the blade, resulting in changes in motor power, while the impact will bring air, it is easy to blade cavitation, affecting the life of the pump ah!Like you said, if the two pumps are connected in parallel, another pump reverses, and that's the same thing. Damage doubles. For a high power motor, it doesn't start several times.
Q:The principle of the check valve
The function of the check valve is to allow the medium to flow in one direction only, and to prevent the flow in the opposite direction
Q:Does one-way check valve affect water flow?
The water inlet of the household water heater is equipped with a triangle valve, which will not affect the flow of water, and be convenient for maintenance and inspection
Q:How does the check valve work?
Check valve refers to rely on the flow of the media itself and automatically open and close the valve flap, used to prevent the media back flow valve, also known as check valve, Dan Xiangfa, counter flow valve and back pressure valve. The check valve belongs to an automatic valve, whose main function is to prevent the backflow of medium, prevent the reverse of pump and drive motor, and release the container medium. The check valve can also be used to provide a supply to the auxiliary system where the pressure may rise above the system pressure. The check valve can be mainly divided into swing check valve (rotating by gravity center) and lift check valve (moving along the axis).The function of this type of valve is to allow the medium to flow in one direction and to prevent flow in the opposite direction. Usually the valve is automatically work, fluid pressure flow in one direction, the valve open; the opposite direction of fluid flow by gravity, fluid pressure and valve closing effect on the valve seat, thereby cutting off flow.Among them, the check valve belongs to this type of valve, which includes swing check valve and lift check valve. The swing check valve has a hinge mechanism and a gate like valve free against the inclined seat surface.
Q:How to install industrial check valves? How should they be used?
1, straight through lift type check valve should be installed in horizontal pipe, vertical lift check valve and bottom valve is usually installed in a vertical pipe on the road, and the bottom-up flow of media.2, swing check valve installation location is not appropriate, usually installed in the horizontal pipe, but can also be installed in the vertical pipe or inclined pipe line.
Q:What is the HC41X-16Q model of the optical valve? What is its main function?
Usually the valve is automatically work, fluid pressure flow in one direction, the valve open; the opposite direction of fluid flow by gravity, fluid pressure and valve closing effect on the valve seat, thereby cutting off flow. Not suitable for medium containing solid particles and viscosity. When the medium according to the provisions of the direction of flow, the valve by the media force, is open;

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