A Solenoid Valve is an electromechanically operated valve. The valve is controlled by an electric current through a solenoid: in the case of a two-port valve the flow is switched on or off; in the case of a three-port valve, the outflow is switched between the two outlet ports. Multiple solenoid valves can be placed together on a manifold.
Solenoid valves are the most frequently used control elements in fluidics. Their tasks are to shut off, release, dose, distribute or mix fluids. They are found in many application areas. Solenoids offer fast and safe switching, high reliability, long service life, good medium compatibility of the materials used, low control power and compact design.
Besides the plunger-type actuator which is used most frequently, pivoted-armature actuators and rocker actuators are also used.
Solenoid valve designs have many variations and challenges.
Common components of a solenoid valve:
The core or plunger is the magnetic component that moves when the solenoid is energized. The core is coaxial with the solenoid. The core's movement will make or break the seals that control the movement of the fluid. When the coil is not energized, springs will hold the core in its normal position.
The plugnut is also coaxial.
The core tube contains and guides the core. It also retains the plugnut and may seal the fluid. To optimize the movement of the core, the core tube needs to be nonmagnetic. If the core tube were magnetic, then it would offer a shunt path for the field lines. In some designs, the core tube is an enclosed metal shell produced by deep drawing. Such a design simplifies the sealing problems because the fluid cannot escape from the enclosure, but the design also increases the magnetic path resistance because the magnetic path must traverse the thickness of the core tube twice: once near the plugnut and once near the core. In some other designs, the core tube is not closed but rather an open tube that slips over one end of the plugnut. To retain the plugnut, the tube might be crimped to the plugnut. An O-ring seal between the tube and the plugnut will prevent the fluid from escaping.
The solenoid coil consists of many turns of copper wire that surround the core tube and induce the movement of the core. The coil is often encapsulated in epoxy. The coil also has an iron frame that provides a low magnetic path resistance.
Solenoid Valve Electromagnetic Valve, Pneumatic Component, Pneumatic Solenoid Valve, Air Compressor Valve,Solenoid Valve Timer NINGBO BRANDO HARDWARE CO.,LTD , http://www.brandopneumatic.com
 co-rotating parallel twin-screw extrusion & Research and development of extended devices
Advantages of  HUAJU Machinery ™ extruders
Excellent dispersion at high throughput rates
High pigment and additive loading levels are possible
Very simple machine operation
Long lifetime of screw and barrel parts due to specially developed screw elements
Fast and therefore economical color changes
  
 TYPICAL AREAS OF APPLICATION FOR PROCESSING OF MASTERBATCH
Color masterbatch
Special effect pigment masterbatch
Carbon black masterbatch
PET masterbatch
Recipe ingredients
Base polymers: PE, PP, PS, EVA, PET, PA, PC, SAN, PMMA, ABS,
TPE, POM, PEEK, etc.
 Polymer Alloying, Reaction, Additive dispersion, Coloring
Materials
Polyolefin, Engineering plastics
Additives, Pigments
1-5%
Flame retardant
20-60%
Polymer Alloying
PP/Elastomers,PC/PET,PC/PBT,PC/ABS,PPE/PA, ABS/PVC, PET/PBT,POM/TPU,PA/Elastomers
Masterbatch compounding
Materials
Polyolefin, Engineering plastics
TiO2
50-70%
Carbon black
30-50%
Pigments
20-40%
Fillers
Talc,CaCO3,BaSO4 ... 60-80%
SiO2,Wooden powder,Glass beads ... 30-50%Fillers, GF compounding
Materials
Polyolefin, Engineering plastics
GF, CF
30-60%
Fillers(Talc,CaCO3,BaSO4)
20-40%
Plastic magnet, Ferrite
less than 90%
Degassing
Materials
Powder, Beads, Melt
PMMA,ABS,PC,PS,HDPE
0.1-3%
Monomer, Solvent, Moisture
Centralized supply system 
Â
ODM design central computer unified managementÂ
integrating all kinds of processing equipment and production equipment connected. Â
concentration and drying, automatic mixing, a multi point remote quantitative delivery
Advanced High Torque Gearbox
ODMÂ Design & Manufacture Acceptable
More than ten years experience in design and manufacture of gearbox,
The bearing capacity is up to 30% above the traditional configuration,
the radial bearings prolonged up to 20 thousand hours.
Each gearbox has been tested at least 24 hours running to ensure stable and reliable quality.
Range of output rotation:300-800rpm,suitable for screw diameter:18-132mm
Torque level: T/A3≈9-11N•m/cm3;
There are hundreds of our company's gear box on which running all kinds of extrusion line to create value forÂ
customer all over the world.
Service system
Before sale services
Introduce products and applications in detail
According to processing materials and formula, offer a suitable quotation.
Offer lab for test
Manufacturing
Provide layout and engineering conditions
Inform the project processing status
In order to ensure product quality and delivery on time ,Production according to documents strictly
Â
After-sale service
Provide installation ,commissioning & training
Provide long-term technical services for free
Â
 Advanced extrusion syste
 co-rotating parallel twin-screw extrusion & Research and development of extended devices
Advantages of  HUAJU Machinery ™ extruders
Excellent dispersion at high throughput rates
High pigment and additive loading levels are possible
Very simple machine operation
Long lifetime of screw and barrel parts due to specially developed screw elements
Fast and therefore economical color changes
 Â
 TYPICAL AREAS OF APPLICATION FOR PROCESSING OF MASTERBATCH
Color masterbatch
Special effect pigment masterbatch
Carbon black masterbatch
PET masterbatch
Recipe ingredients
Base polymers: PE, PP, PS, EVA, PET, PA, PC, SAN, PMMA, ABS,
TPE, POM, PEEK, etc.
 Polymer Alloying, Reaction, Additive dispersion, Coloring
Materials
Polyolefin, Engineering plastics
Additives, Pigments
1-5%
Flame retardant
20-60%
Polymer Alloying
PP/Elastomers,PC/PET,PC/PBT,PC/ABS,PPE/PA, ABS/PVC, PET/PBT,POM/TPU,PA/Elastomers
Masterbatch compounding
Materials
Polyolefin, Engineering plastics
TiO2
50-70%
Carbon black
30-50%
Pigments
20-40%
Fillers
Talc,CaCO3,BaSO4 ... 60-80%
SiO2,Wooden powder,Glass beads ... 30-50%Fillers, GF compounding
Materials
Polyolefin, Engineering plastics
GF, CF
30-60%
Fillers(Talc,CaCO3,BaSO4)
20-40%
Plastic magnet, Ferrite
less than 90%
Degassing
Materials
Powder, Beads, Melt
PMMA,ABS,PC,PS,HDPE
0.1-3%
Monomer, Solvent, Moisture
Centralized supply systemÂ
Â
ODM design central computer unified managementÂ
integrating all kinds of processing equipment and production equipment connected. Â
concentration and drying, automatic mixing, a multi point remote quantitative delivery
Advanced High Torque Gearbox
ODMÂ Design & Manufacture Acceptable
More than ten years experience in design and manufacture of gearbox,
The bearing capacity is up to 30% above the traditional configuration,
the radial bearings prolonged up to 20 thousand hours.
Each gearbox has been tested at least 24 hours running to ensure stable and reliable quality.
Range of output rotation:300-800rpm,suitable for screw diameter:18-132mm
Torque level: T/A3≈9-11N•m/cm3;
There are hundreds of our company's gear box on which running all kinds of extrusion line to create value forÂ
customer all over the world.
Service system
Before sale services
Introduce products and applications in detail
According to processing materials and formula, offer a suitable quotation.
Offer lab for test
Manufacturing
Provide layout and engineering conditions
Inform the project processing status
In order to ensure product quality and delivery on time ,Production according to documents strictly
Â
After-sale service
Provide installation ,commissioning & training
Provide long-term technical services for free
Â
Engagement System: Intermeshing
Screw Channel Structure: Deep Screw
Exhaust: Exhaust
Automation: Automatic
Computerized: Computerized
Trademark: Huaju
Transport Package: Depends
Origin: China
HS Code: 8477209000
Engagement System: Intermeshing
Screw Channel Structure: Deep Screw
Exhaust: Exhaust
Automation: Automatic
Computerized: Computerized
Trademark: Huaju
Transport Package: Depends
Origin: China
HS Code: 8477209000
 Advanced extrusion systeDecember 01, 2018