Shenlong Pump News Center

1. Before the use of self priming pump check whether there is no loosening of bolts, power cord and plug is intact, the motor insulation resistance should be greater than 2 mb.
2. To prevent electric shock accident, must be installed leakage circuit brea

1. Temperature control valve selection and application of common sense.
2. Should be based on the type of heat medium (steam / hot water), temperature, pressure parameters and the use of the operating conditions (heat exchanger type, open / closed system

Reason:
1. Poor operation, the closure member stuck on dead center or more, damage to fracture junction.
2. Pieces of connection is not firmly closed, slack off.
3. Choose the material of the connection piece is wrong, can not afford the media of corro

Reason：
1. Seal ring rolling is not strict.
2. Sealing ring and body welding, welding quality is poor.
3. Sealing ring connection screw, screw, pressure ring loose.
4. Sealing ring connection and corrosion.

Reason：
1. Sealing surface grinding uneven, can not form a close line.
2. The stem and the closure of the connection between the top of the heart is left hanging, not right or wear.
3. Stem bending or assembly is not, so that the closure of a skew or n

Reason：
1. Filler selection is wrong, the media is not resistant to corrosion, the valve is not resistant to high pressure or vacuum, high temperature or low temperature.
2. Filler installed wrong, there is a small generation of big, bad spiral coil con

Reason：
1. High quality cast iron castings, valve body and valve cover blisters, loose organization, slag and other defects on the body
2. Cold cracking;
3. Bad welding, there is a slag, not welded, stress crack and other defects;
4. Cast iron valve d

Pneumatic diaphragm pump is the core component of the vulnerable parts: diaphragm pump. Diaphragm rupture problems have been puzzling the diaphragm pump manufacturer of all walks of life and how the wider use of this the new product?

1. Using the valve with damping device
2. For a spool reducing braking cone angle
3. Repair research valve seat, replace the steel ball
4. Grinding valve hole, heavy with the spool valve, ensure reasonable clearance
5. Replace the two ends of the pape

Vacuum heat treatment: vacuum heat treatment is a product of the combination of vacuum technology and heat treatment process. Because it has the non oxidation, does not take off the carbon, the surface brightness.

1. The safety valve should be installed upright and close to the protected equipment or pipeline. If not close to the arrangement, from the protected equipment or pipeline to the safety valve inlet total pressure drop, should not exceed 3% of the value of

Selection, installation of the appropriate traps as long as there is steam through, there will be no freezing problem. But if the steam is broken, the steam condensate will form a vacuum in the heat exchanger or the tube. This will prevent condensation of

Causes of sewage pump without water:
1.Suction is too large.
2.The resistance loss of the water flow in and out of the pipe is too large.
3.The influence of other factors

Fault of the sewage lift pump:
1.Sewage pump does not pump water into the water inlet pipe and pump body with air
2.Sewage pump speed is too low

Magnetic pump shaft fracture. The material used in the pump shaft of the CQB type magnetic pump is the main cause of the fracture of the 99% alumina ceramics.Yes, because the air pump running, dry grinding and bearing shaft is broken. Disassemble the pum

Magnetic pump shaft fracture. The material used in the pump shaft of the CQB type magnetic pump is the main cause of the fracture of the 99% alumina ceramics.Yes, because the air pump running, dry grinding and bearing shaft is broken. Disassemble the pum

Since the water suction sewage pump:
1. Reasons: the pump body does not add liquid storage or storage of the lack of. Methods: plus foot.
2. Reasons: the elimination. Method of air leakage in the suction pipe: eliminating the leakage of the pipeline.

Self suction non clogging sewage pump failure causes have 5 reasons:
1. Self-priming sewage pump water.
2. Self-priming sewage pump water shortage.
3. Self-priming sewage pump noise, vibration is too large.
4. Self-priming sewage pump bearing temperat

Valve is not like a manual valve, after the installation of a few more to the management, maintenance, it must be ground maintenance to ensure the normal operation and longer service life. The method as follow:
1. Growth of the throttle channel
2. Chang

Valve is not like a manual valve, after the installation of a few more to the management, maintenance, it must be ground maintenance to ensure the normal operation and longer service life. The method include as follow:
1. Opening work
2. Reduce the incr

The vacuum pump can be divided into three categories according to the scope of use and the efficiency of the pumping:
1. The general water pump, pressure can reach 1.333~100kPa (10~760mmHg) for the "rough" vacuum.
2. Oil pump, pressure up to 0.133~133

Vacuum pump is good or bad depends on its mechanical structure and the quality of oil, the use of vacuum pumps must be good to protect it.
If a large distillation of volatile organic solvent, organic solvent will be oil absorption results in an increase

Using of self priming pump include as follow:
1. Preparation and inspection before starting.
2. Start up and operate.
3. Stop the pump

1. In the pump and motor direct connection drive, should pay attention to the pump shaft and the motor output coaxial degree; pump installation accuracy and had great influence on the pump running stability and service life. Therefore, it is necessary to

Safety valve is a safety valve, its opening and closing parts under the action of external force in a normally closed state, when the equipment or pipeline in the medium pressure increases, more than the set value automatically open, discharged to the out