Feature of resistance vacuum gauge

Posted on Fri, 08 Jun 2018 06:26:12 +0000

Pirani vacuum gauge: The resistance vacuum gauge, also known as the Pirani gauge, responds to changes in pressure due to changes in the resistance of the filament. It is mainly composed of two parts: regulatory and measurement lines. Its measurement range is 104 to 10-1 Pa. The structure of the ...

+ Continue reading

DLV double stage water ring pump

Posted on Tue, 29 May 2018 05:57:16 +0000

The new type dual stage water ring pump can complete replace the SIHI LPH series pump from the pump performance, power and outline dimension. Even though our DLV pump parts can replace the SIHI pump parts. Such as the impeller as follow: Our pump impeller has no holes, but SIHI has two holes, be...

+ Continue reading

liquid ring vacuum pump

Posted on Fri, 18 May 2018 08:49:51 +0000

Some suggestion about choose liquid ring vacuum pump 1. choose the lower speed specifications: At present, China’s liquid ring vacuum pump is the most widely used 2BE series, it is a single suction axial suction pump. There is a variety of speed options for the same specifications , when th...

+ Continue reading

Diffusion pump unit

Posted on Fri, 18 May 2018 08:48:02 +0000

Operation Procedure of Diffusion Pump System 1.Connect primary vacuum pump, roots pump, diffusion pump, pilot valve of electromagnetic pressure difference valve, cylinder solenoid valve of vacuum valves, power and gas source of magnetic switch. 2.Connect vacuum pumps and cooling water of all wate...

+ Continue reading

Important factor for roots pump selection

Posted on Fri, 18 May 2018 08:46:31 +0000

Important factor for roots pump selection:  the compression ratio of zero airflow   Roots pump has been always used as the main pump in vacuum system for its large capacity and stable performance. While in roots pump selection process, its capacity, ultimate vacuum, and pressure difference h...

+ Continue reading

Water chamber vacuum pump

Posted on Fri, 18 May 2018 08:44:52 +0000

The theory and function of vacuum pump adopted on water chamber of condenser on power plant The target and function of vacuum pump on water chamber: A)Before the system started and the head of water pump (for water circulation) is less than the request of condenser’s water chamber, the vacuum pum...

+ Continue reading

liquid ring vacuum pump pumping speed

Posted on Fri, 18 May 2018 08:43:14 +0000

Why does the liquid ring vacuum pump reduce pumping speed in high vacuum area? The application of liquid ring vacuum pumps has been limited because the liquid ring vacuum pump will drastically reduce the pumping speed when the vacuum degree exceeds -0.09Mpa, resulting in a low efficiency to  wate...

+ Continue reading

Rotary piston vacuum pump

Posted on Fri, 18 May 2018 08:42:43 +0000

Analysis of rotary piston vacuum pump structure In the past of decades years, our company has conducted many new explorations, trials and researches on the overall structure of the slide valve pump and the structure of the main components. It has achieved very good results, has a certain practica...

+ Continue reading

Water pump maintenance

Posted on Fri, 18 May 2018 08:41:34 +0000

Firstly, The power supply should be inspected: the connection whether firm; the switch contact whether dense; the fuse whether blown; the three-phase power supply whether equal or not. If there is a broken circuit, poor contact, blown fuse, or lack of phase, the cause should be ascertained and re...

+ Continue reading

Difference between CF, KF, and ISO Flanges

Posted on Fri, 18 May 2018 08:39:03 +0000

Flange connections are widely used in the connection of vacuum units, such as vacuum pumps and pipes, valves, cold traps. Commonly, there are three types of them: CF, KF and ISO. What are differences between them? 1.CF flange: CF is the abbreviation for Conflat Flange. It is a static metal seal. ...

+ Continue reading