■ Product Feature

1. Easy adjustment of output pressure.

2. Boosts local line pressure without requiring additional power.

3. Possible to get a maximum of double pressure by connecting air with a factory line. (VBA11A: maximum 4 times)

4. Space-saving type that directly connects air tanks and booster regulators.

Model	VBA10A-02	VBA20A-03	VBA40A-04	VBA22A-03	VBA42A-04	VBA43A-04	VBA11A-02
Working medium	Compressed air
Pressure increase ratio	Twice						2 to 4 times*4)
Pressure adjustment mechanism	Knob-operated with relief mechanism*2)			Air-operated	Knob-operated with relief mechanism*2)
Max.flow rate*3) [L/min (ANR)]	230	1000	1900	1000	1900	1600	70
Set pressure range (Mpa)	0.2 to 2.0	0.2 to 1.0				0.2 to 1.6	0.4 to 2.0
Supply pressure range (Mpa)	0.1 to 1.0
Proof pressure(Mpa)	3	1.5				2.4	3
Port size (RC)(IN/OUT: 2 locations)	1/4	3/8	1/2	3/8	1/2		1/4
Pressure gauge port size (Rc)  (IN/OUT: 2 locations)	1/8
Tank connection port(with plug)*5)	1/4	3/8	1/2	3/8	1/2		1/4
Ambient and fluid temperature (℃）	2 to 50(NO freezing)
Installation	Horizontal
Lubrication	Grease(Non-lube)
Weight (kg)	0.84	3.9	8.6	3.9	8.6	8.6	0.89

*1) Be sure to secure an air supply capacity of the minimum operating pressure (0.1 MPa) or more. 

*2) If the OUT pressure is higher than the set pressure by the knob, excess pressure is exhausted from the back of the knob. 

*3) Flow rate at IN= OUT= 0.5 MPa. The pressure varies depending on the operating conditions. Refer to “Flow Rate Characteristics” .

*4) Set the pressure increase ratio to 2 or more. 

*5) The tank connection port cannot be used for applications other than the connection with VBAT.

Solid line: Operating range 

                   Operate so that the flow rate follows the solid line even when the outlet side air has been consumed. 

                    Ex.) For the VBA10A: When the inlet pressure is 0.5 MPa and the set pressure is 1.0 MPa,   operate at an outlet air flflow rate of 180 L/min (ANR) or less. 

Dotted line: Outside of the set pressure range 

P1: Inlet pressure           P2: Outlet pressure

* When operated at a flow rate that falls within the unstable area (P2 < P1 conditions) as shown in the graphs above, the booster   regulator may not operate normally and may therefore fail to increase the pressure. 

■ Tank Pressure Pulsation

Pulsation is decreased with a tank. If the outlet capacity is undersized, pulsation may occur. 

Conditions 

Inlet pressure: 0.5 MPa 

Outlet set pressure: 1 MPa  

Flow rate: Between 0 and max. flow rate 

Performance of air tank 

● Alleviates the pulsation generated on the  outlet side.  

● When air consumption exceeds air supply  during intermittent operation, required air  will be accumulated in the tank for use. 

● This does not apply for continuous  operation. 

● Operation at a flow rate that falls within the unstable area under temporary P1 ≥ P2 conditions can be prevented when the  outlet side air has been consumed. 

■ Internal Structure 

Replacement Parts/Kit No 

Place an order with the following applicable kit number. 

Model	VBA10A	VBA20A	VBA40A	VBA22A	VBA42A	VBA43A	VBA11A
Kit No.	KT-VBA10A-1	KT-VBA20A-1	KT-VBA40A-1	KT-VBA22A-1	KT-VBA42A-1	KT-VBA43A-1	KT-VBA11A-20

The kit includes the parts from ① to ⑦ and a grease pack.

No.	Model	VBA10A	VBA20A	VBA40A	VBA22A	VBA42A	VBA43A	VBA11A
		Quantity
1	Piston seal	2			2 large 1 small		2	1 each large and small
2	Governor assembly	1
3	Check valve	4						2
4	Gasket	2
5	Rod seal	1
6	Mounting screw	-	8	12	8	12		-
7	Cover C assembly	-						1
-	Gasket pack	1		2	1	2		1

* For detailed dimensions, specififications and lead times, please contact VPC.