| After-sales Service: | Yes |
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| Warranty: | 1 Year |
| Manufacturing Process: | Casting |
| Surface Treatment: | Galvanized |
| Operation Pressure: | Atmospheric Pressure |
| Material: | Alloy |
| Samples: |
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| Customization: |
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Audited Supplier Float subs are used to house a float valve, also known as a back pressure valve. it functions
as a safety between the well bore and the inside of the drill string to prevent drilling fluids from back
flowing up to surface.
Float Valve Sub is usually connected on the top of the bit to control down hole liquid. While stopping pump
and connecting with single, it can prevent waterhole from being plugged by reflowing drillings. When
blowout occurs, it can serve as splash valve to prevent liquid flowing into drilling tools.It is divided into
plate type float sub and arrow-type float valve sub.
Structure:Float valve sub consists of sub, float valve unit and accessory extractor. While using, float
valve unit should be put into joint body. Float valve unit is composed of body, sealed ring, seal gland, valve
bonnet, torsional spring and limit marker.
Principle:Working principle of float valve sub is rather simple.When normal drilling and pumping
circulation,the bonnet of float valve unit will be opened completely.If well kick or pumping off occurred,the
bonnet will close waterhole depends on elastic force of torsional spring.It can prevent blowout in the
drilling tool.
Applicable Industries: Energy & Mining
Use::Well Drilling
Place of Origin: Shandong, China
Brand Name: Zhao Xin
Material: Alloy steel
Type: FFJT108~FFJT241
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Audited Supplier 
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