Japan, NAGANO KEIKI
NAGANO KEIKI GV4_ Glycerine Bath Type Pressure Gauges
Made in Japan
Manufacturer: NAGANO KEIKI
Model: GV4_ Glycerine Bath Type Pressure Gauges for High-Pressure Hydrogen
This is a gauge for exclusive use exposed to vibration. Its interior is filled with liquid, preventing vibration of moving parts and wear of interior linkage mechanism, and making maintenance work easier.
Certificate： 
Features
+The parts contacting with the liquid and the case are made of stain less steel so that they are excellent in anti-corrosion and environ-mental resistance.
+By equipping a blowout disk, the effect of temperature change on accuracy is reduced, and breakage of glass is prevented in case the Bourdon tube bursts.
+To indicate the working pressure gauges with 60 DIA. and 75 DIA. are provided with a safety mark(green mark) as an option which can be set by an arrow.
*In case of selecting pressure gauge, choose the pressure range which can be used in between 30-65% of full scale, so that the gauge can give its full capacity.
*Also should be confirmed whether the wetted parts material is suit able for the fluid or not.
+By equipping a blowout disk, the effect of temperature change on accuracy is reduced, and breakage of glass is prevented in case the Bourdon tube bursts.
+To indicate the working pressure gauges with 60 DIA. and 75 DIA. are provided with a safety mark(green mark) as an option which can be set by an arrow.
*In case of selecting pressure gauge, choose the pressure range which can be used in between 30-65% of full scale, so that the gauge can give its full capacity.
*Also should be confirmed whether the wetted parts material is suit able for the fluid or not.
