Flanged Constant Head Check Valve Pump Check Valve

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Packaging & Delivery

Packaging Detail:

Export plywood box,wooden case

Delivery Detail:

0-40 day


Sizes: DN100 - DN800 
Pressure: 1.6 - 6.4MPa 
Suitable temperature:<80 C 
Connection: RF

Constant Head Check Valve

Sizes: 4“ - 48" 
Pressure: 1.6 - 6.4MPa 
Suitable temperature:<80°c
Connection: RF

  1. Introduction

It is a new authorized water power control valve of our company, awarded the national patent.

It’s mainly available for service pipe on diesel pump and electric pump , to ensure pump sets to supply water at a rated head and flow, specially for preventing overloading at a low head and overloaded starting. It can be used for water supply and fire pump system in pipeline for auto-inspection and decompression running.

This constand head/check valve is widely to use for water supply system such as daily, industrial and smelting and fire protection, and a multi parallel connection pump sets system etc. it’s a ideal valve for keeping pipeline safety and running high efficiency

2. Application of this constant head check valve

It solves problems on application of pumps in the field of water industry.

2.1 Pump can be started at low axis power to decrease the drive start power

2.2 Pump can be worked under a huge of pressure diversification , enable working in a high efficiency for saving energy.

2.3 Pump can be worked under a huge of pressure diversification ,enable working as the model section situation for ensuring the suited drive equipment non-overloaded

2.4 Pump is injecting water to pipeline as the model section situation to ensure the suited drive equipment non-overloaded

2.5 Pump is injecting water to pipeline as the model section situation to ensure the suited drive equipment non-overloaded

2.6 When pump is stopped, ensuring pump and pipeline connection is cutoff to prevent water flowing back



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.


 Flanged Constant Head Check Valve Pump Check Valve

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Q:Is the check valve installed at the inlet or outlet of the pump? Why?
Is the check valve installed at the inlet or outlet of the pump? Mainly to see whether the water pump suction or press in? There are other factors, such as pressing first class. Generally both sides will be installed, each has its own role, but to look at the type of your pump and other parameters, you describe the situation is too simple to point out in detail, such as specific is that a few, or all? Also, how high the pump needs to be played, and the pressure is often determined. The check valve is installed on the water outlet side of the pump. I simple analysis may be the following reasons, need to have a simple to complex one by one investigation, 1, electrical specifications are matching? 2 、 the pump has air intake or air not discharged 3, piping layout is reasonable? 4, check valve installed counter, or check valve did not open, stuck,? This situation is rare, the general novices easily made 5, you missed the judgment? ------------------- most likely the breath, or simply not enough water, the check valve can be judged according to the type of installation position.
Q:Furnace blower outlet check valve what
Must install check valve to prevent downtime fan reversal
Q:Can the check valve be horizontally installed?
Lift check valve can be divided into straight through and vertical two. Straight through lift check valve can only be installed in horizontal pipe, vertical lift check valve is usually installed in vertical pipe.
Q:Is the tank stop valve a non-return valve or a check valve?
Check valve is a one-way valve, automatically prevent reverse flow of fluid, no knob, can not be artificial blocking forward flow.
Q:What are the differences between the vertical check valve and the horizontal check valve in function and principle?.
The check valve has a baffle inside it, usually closed by gravity,The function and working principle are basically indistinguishable
Q:What is the air pipe check valve?
The air pipe check valve is installed in the ventilation or air conditioning duct. When the fan is running, the valve is opened and the air flow is passed smoothly. When the fan stops, the valve is closed to prevent the air from reversing.
Q:What is the function of the check valve in the pipeline?
An important role for Fujian Biaoguang valve for check valve in the pipeline:The check valve is divided into three kinds: lift check valve, swing check valve and butterfly check valve. The lift check valve can be divided into two types: vertical check valve and horizontal check valve. Swing check valve is divided into single check valve, double check valve and multi flap type check valve three. Butterfly check valve for the straight through check valve, the above several kinds of check valve in connection form can be divided into threaded connection, check valve, flange connection check valve and weld check valve three kinds.
Q:Automatic water tower water reflux, plus a check valve not supposed
Check the direction of the installation is correct, check valve quality is good, you can install two check valve. Check valve refers to rely on the flow of the media itself and automatically open and close the valve flap, used to prevent media backflow valve, also known as check valve, one-way valve, 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.
Q:How to use the check valve when the size of the pressure?
When using check valves, the magnitude of the pressure shall correspond to the pressure level of the pipe
Q:Is the check valve behind or behind the gate valve? Why?
Thank youPlease install it in frontWhat about the front?

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