• Large capacity in a compact body. (approx. 2000 Nm³/h with 0.03 MPa differential pressure)
• Combination of Free Float® and spring-loaded check valve allow for high sealing capability and durability
• The only moving parts are the hinge-less, lever-less free float and the center-guided check valve with coil spring support for long, trouble-free service life. Nitrile rubber ensures a tight seal for both valves.
• Free Float® rapid initial air vent allows for easy venting of initial air upon system startup*
• Suitable for use in salt water processes

*While acting as an initial air vent, once the valve closes after discharging initial air, it will not open again, even if air accumulates inside the product, until internal pressure drops to near atmospheric pressure. Install an automatic air vent if air flows into the system during operation.

Applications where a large amount of air is necessary to be introduced to water supply lines to prevent a vacuum from forming, such as:

• Elevated Cooling Water Piping
• Coastal Seawater Supply

Model	Photo	Connection		Body Material	Applicable Fluids	PMO (MPaG)	TMO (℃)	Max. Intake Capacity (l/min)*	Max. Discharge Capacity (l/min)*	Specifications	Manual
		Main Connection	Air Intake Port Air Intake/Discharge Port
VB3		Flanged	Screwed	Super Duplex Cast Stainless Steel (CD3MWCuN)	Water, Seawater	1.0	90	46000	3200	Specifications	Enquire
VB3-H		Flanged	Screwed	Cast Steel (ASTM A216 Gr. WCB)	Water

• PMO = Maximum Operating Pressure
• TMO = Maximum Operating Temperature

• The latest version of each product's instruction manual can be found on this page.

• *Capacities are equivalent capacities of air at 20 °C under atmospheric pressure.