NISSAN TANAKA Prince Changer Semi-automatic Switching Device

Manufacturer: Nissan Tanaka

Prince Changer for general industrial gases

Features

Automatically switch between left and right gas supply lines for continuous, long-term gas supply.
When using the optional pressure gauge with contacts and Prince Alarm alarm device, you can be notified of low pressure in the supply line through a buzzer and lamp.
We offer two types, for assembly equipment and wall-mounted use, so you can choose the most suitable option depending on your installation location.

Flow characteristics

Specifications

Product name	Model	Gas Type	Maximum Flow Range (L/min(nor))	Operating Temperature Range (°C)	Pressure Gauge (MPa)		Maximum Operating Pressure (MPa)		Switching Pressure	Inlet and Outlet Shapes		Weight (kg)
Product name	Model	Gas Type	Maximum Flow Range (L/min(nor))	Operating Temperature Range (°C)	Inlet Side	Outlet Side	Inlet Side	Outlet Side	Switching Pressure	Inlet Side	Outlet Side	Weight (kg)
Wall-Mounted Prince Changer	930NA	O₂N_{2 Ar He}	120(P3=0.3MPa)	-5～40	25	1.0	15	0.5	0.65～0.95	Rc1/4	Rc1/4	4.6
Wall-Mounted Prince Changer	930NB		100(P3=0.2MPa			0.3		0.2		Rc1/4
Integrated Systems Prince Changer	930MA		120(P3=0.3MPa)			1.0		0.5		W22-14 mounting nut
Integrated Systems Prince Changer	930MB		100(P3=0.2MPa			0.3		0.5		W22-14 mounting nut

Material Composition	Main body	Diaphragm	Filter	Other gas connection parts
Material Composition	C3604,C3771	NR	bronze sintering	C3604, SUS304, Fluororesin

※ Normal flow rate is the value when the gas is flowing..
※ Wall-mounted type 930NB is made to order.
※ We also offer supply frame fabrication. Please consult our sales representative.
※ We can also provide pressure gauges with contacts for flammable gases. Please consult our sales representative.
※ If the supplied flow rate exceeds the upper limit of the specified flow range, gas may be supplied from both systems.

External View

930MA

930NA

Optional Feature

Pressure gauge with electrical contacts

Full Scale: 25MPa
Size: Ø75mm
Connection Type: G1/4
Gas Contact Metal Material: Brass
Lower Limit Set Pressure = 1.5MPa
Load Allowance: 0.2A or less
Contact Power Supply: AC100V

Alarm Panel (Prince Alarm)

Prince Alarm 930AP
※ We can also design the alarm panel according to your requirements.
※ Please inquire for more details.

Product lineup

<PC Series>

For general industrial gases
Low pressure, high flow rate type. We offer a medium pressure (0.7MPa) supply type.

<Stainless Changer>

For standard gases, high-purity gases, and laser gases.
The gas contact parts are made of stainless steel, aiming for purity retention performance.
We offer both low-pressure type and medium-pressure (0.7MPa) supply types.

⚠️Warning: To ensure proper usage, please be sure to read the “instruction manual” thoroughly before using.

This product may undergo changes in specifications and other details for improvement purposes without prior notice.

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