Ductile Iron Combination Type Vacuum Breaker Air Release Valve (FGP4X)

• Sealing: NBR(≤80°c); EPDM(≤120°c)
• Connection: Flange End
• Standard: En, BS, DIN, ANSI, JIS, GB etc
• Medium Applicable: Water
• Body: Ci, Di, Wcb, Ss etc
• Pressure Rating: Pn10, Pn16, Pn25, Pn40 (Cl150, Cl300)
• Model NO.: FGP4X
• Transport Package: Bubble Plastic Paper + Plywood Case
• Specification: DN25 - DN150
• Trademark: KARFAR
• Origin: China
• Production Capacity: 2000PCS/Mouth

Product Description

Combination Type Double Orifice Air Valve with Mini Air Valve
MODEL NO.: FGP4X
   

Δ Brief Introduction : The KARFAR model FGP4X air vent  is double orifice type.
This air vent is usually mounted at outlet side of  pump or water distribution pipeline. It performs to release the air collected inside so as to improve the working capacity of pump station and pipeline. When the pipeline is under negative pressure, the plug will  open rapidly to fill in air to protect pipeline from negative pressure damage.

Note: This model can not be used in sewage pipeline

Features:
1, Reliable Sealing with special design
2, Automatic air releasing and filling without manual operation
3, Dependable performance and long service life
   Float ball moves in fixed routine without hitting the shell
4, Short in height than other same kind air vents

Three functions: 
1, large amount of air releasing (main vent )
2, small amount of air releasing (small vent overriding)
3, rapid air filling 

It allows air to escape when filling the pipe.
It allows air to enter when emptying the pipe (preventing pipe collapse)
It allows continuous automatic control, eliminating accumulated air, even when the system is under pressure.
 

PART NAME	Material
Body	Cast iron, Ductile iron, Stainless steel etc
Float ball	Stainless steel
Stem	Stainless steel
Stem yoke	Stainless steel
Plug	Stainless steel
Bonnet	Cast iron, Ductile iron, Stainless steel etc
Protection hood	Cast iron, Ductile iron, Stainless steel etc
Gasket	NBR, EPDM
Top plug	NBR + Stainless steel
Plug sleeve	Stainless steel