Liquid Filled Pressure Gauge

The Ningdian® liquid filled pressure gauges are extensively used in domestic, commercial, and industrial applications. They provide a quick indication of the pressure in a system for equipment installation, configuration, and operation.

The China Ningdian® Liquid filled pressure gauge is a shock-resistant pressure gauge. 

There are many vibration occasions, such as injection molding machines and compressors. Oil-filled pressure gauges can be used. The difference is there, but it is not a big difference, just the difference between the two use occasions. 

What is the difference between Liquid filled pressure gauges and dry pressure gauges?

After filling with oil, the resistance increases, so the pointer is relatively stable, which can prevent the vibration of the pointer, which is what we often call a shock-resistant pressure gauge. Large pressure fluctuations (such as a plunger pump) make the pressure gauge read accurately and prolong its service life. 

Is this "oil" free to choose? 

The answer is definitely NO! This "oil" is mainly two kinds of glycerin and silicone oil. The functions of the two oils are also different. Glycerin mainly plays a role in anti-shock; silicone oil can also play a role in anti-shock, but silicone oil is more resistant to low temperature than glycerin. If the outdoor temperature reaches minus 20 ℃, glycerin will crystallize. , but the silicone oil can also make the meter work properly.

Parameter of Liquid Filled Pressure Gauge or FillablePressure Gauge（Brass Internal）

Size:From 1.5” to 6”
Pressure Range:From 30inHg to 1600bar
Socket:Brass , chrome plated
Thread:BSP, NPT, BSPT, PT, ZG, and other special specification
Bourdon Tube:Phosphor bronze or stainless steel material
  Lower Case :304 St St ,316 St St material, polished or not polished, back with no screws
Bezel:304 St St crimped bezel or 316 St St crimped bezel,bayonet
Window:PC Lens or glass lens
Dial Plate:Single , dual or three scales(Bar, Psi, Kg/ c㎡, Kpa, Mpa)
Accuracy:3-2-3%,2.5%,1.6%,1%
Movement:Steel, brass or stainless steel material
  Pointer:Aluminium or stainless steel material（adjust type）
U-Clamp:Chrome plated or St St material
Flange:Chrome plated or St St material
Restrictor:Brass or St St material
Over Pressure:130%