Shenlong Pump News Center

Pump selection basis, should be based on process flow, water supply and drainage requirements, from five aspects to be considered, both the volume of liquid delivery, head, liquid properties, pipeline layout and operation of the operating conditions, etc.

Self priming centrifugal pump is a centrifugal force generated by the centrifugal force generated by the impeller to rotate. In the selection of self priming centrifugal pump, to determine the use and performance of the pump and the choice of pump type. T

Design Institute in the design of equipment, to determine the use and performance parameters of the pump and the choice of pump type. This choice must first from the choice of corrosion resistant chemical pump type and form, then what principle to choose

Breathing valve is divided into two kinds:
The first is to reach a certain pressure, the call or suction; the other is designed to simply call not suction, can be understood as a one-way valve with two appropriate pressure to replace.
The second kind of

It makes full use of the bearing capacity of the oil tank itself to reduce the oil vapor emission, and its principle is to use the weight of the valve disc to control the positive pressure and the negative pressure of the oil tank. When the tank of gas pr

The oil pump applicable to transport all kinds of oils, such as heavy oil, diesel oil, lubricating oil, copper gear can be equipped with a conveying low point liquid, such as gasoline, benzene and so on, the unit also produces stainless steel gear pump ca

Safety valve: it is through the valve automatically open the exhaust gas to reduce the high pressure inside the container.
Blasting piece: is the use of blasting components at higher pressure, the occurrence of fracture and emissions of gases (including

1. Pilot operated pressure relief valve installed in the pipe network, you should pay attention to the direction of the water flow and the body of the arrow.
2. Pilot operated pressure relief valve in the valve must be installed before the filter to prev

The hydraulic control valve is a water self run type body, without the need to add oil lubrication, if the main valve parts in case of damage, please follow the instructions to be removed. (Note: the general consumption of injury within the valve products

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