MIP X FIP Solid Bottom Valve

O-Ring Sealed MIP x FIP Solid Bottom Valve is a special shut-off valve in the brass truck valve series, designed for fluid systems that require high sealing, convenient installation, and reliable shut-off function. Its core design combines the dual interface form of external thread (MIP) and internal thread (FIP), achieves leak free connection through O-ring sealing, and uses a solid bottom structure to provide fluid cutoff function, suitable for truck fuel systems, pneumatic control, and industrial fluid management.

 

Part#	Size	MAF	Fairview
XJ56400	1/8	46400	5120-A
XJ56401	1/4	46401	5120-B
XJ56402	3/8	46402	5120-C

 

 

1. Interface design

MIP end (Male Iron Pipe Thread): External thread interface, compliant with the American standard NPT (Conical Thread), can be directly screwed into the internal threaded port of equipment or pipelines.

FIP end (Female Iron Pipe Thread): An internal threaded interface used to connect external threaded pipes or fittings, with strong adaptability.

Dual interface function: Allows valves to be used as both pipeline adapters and shut-off valves, simplifying system layout.

 

2. O-ring sealing system

Sealing principle: Insert fluorine rubber (FKM) or nitrile rubber (NBR) O-ring at the threaded connection, form a static seal through pre compression, and avoid relying on traditional thread sealing tape.

Advantages:

More stable sealing, especially suitable for truck environments with frequent vibrations.

Allow for repeated disassembly without affecting the sealing effect and easy maintenance.

 

3. Solid Bottom

Cut off function: The bottom of the valve is designed to be closed without any fluid channels, and the fluid can be completely cut off or conducted by rotating the valve body.

Operation method: It is usually equipped with a hexagonal wrench interface or handle for manual switch control.

 

4. Materials and Craftsmanship

Valve body material: High-purity brass, corrosion-resistant and mechanically strong, suitable for water, oil, air and non corrosive chemicals.

Surface treatment: Optional nickel plating (salt spray resistance) or chrome plating (wear resistance) to extend service life.

Internal structure: Precision machined flow channel reduces pressure drop and turbulence, and the valve seat and valve core are hardened to enhance wear resistance.

 

 

Characteristic	O-Ring Sealed MIP x FIP	Traditional thread sealed valve
Sealing reliability	High (good dynamic adaptability)	Medium (dependent on tape/sealant)
Maintain convenience	High (quick replacement of O-ring)	Low (requires rewinding of tape)
Cost	Higher	Lower
Applicable scenarios	High frequency vibration/requires repeated disassembly	Static low-voltage system

 

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