Festo FESTO directional valve manual lever valve

Dongguan Guanglian (Shanghai) Sensor Instrument Co., Ltd. has a good market reputation, a professional sales and technical service team, and with years of business experience, familiar with and understanding the market situation, has won the support of domestic and foreign manufacturers. Our company has become a fixed supplier and domestic trade partner for many large, medium, and small enterprises, and has become a company in the industry.
The company specializes in selling hydraulic components, pneumatic components, motors, pumps, valves, bearings, amplifiers, sensors, relays, filters, accumulators, coolers, pipe joints, and other hydraulic brands from Europe and America, including PARKER from Parker, BOSCH-REXROTH from Bosch Rexroth, VICKERS from Wiggs, HAWE from Hawei Germany, DENISON from Denison, ATOS from Atos Italy, BARKSDALE from Bus Germany, DANFOSS from Danfoss Denmark, HYDAC from Hedec Germany, MAHLE from Germany, and others. The products are widely used in metallurgy, electric power, automobile, coal, petrochemical, shipbuilding, port machinery, engineering machinery, environmental protection, textile, plastic machinery and other fields.
Festo FESTO directional valve manual lever valveclassification
Directional control valve
(1) According to the direction of fluid flow in the pipeline, if only one direction of fluid flow is allowed, such valves are called one-way control valves, such as one-way valves, shuttle valves, etc; The control valve that can change the direction of fluid flow is called a directional valve, such as commonly used two position two-way, two position three-way, two position five way, three position five way, etc.
(2) According to the control method, it can be divided into solenoid valves, mechanical valves, pneumatic valves, and human controlled valves. Among them, solenoid valves can be divided into two types: single and double electric control valves; Mechanical valves can be divided into various types such as ball head valves, roller valves, etc; Pneumatic valves can also be divided into single pneumatic valves and dual pneumatic valves; Manual valves can be divided into two types: manual valves and foot operated valves.
(3) According to the working principle, it can be divided into direct acting valves and pilot valves. Direct acting valves are valves that rely on human or electromagnetic force, and pneumatic force to directly achieve directional requirements; A pilot valve consists of a pilot head and a valve body, with the pilot head piston driving the valve stem inside the valve body to achieve directional change.
(4) Valves can be divided into 2way and 3-way valves based on the working position of the reversing valve stem.
(5) According to the number of air holes on the valve, it can be divided into 2port, 3port, and 5port valves.
Festo FESTO directional valve manual lever valvekind
Ordinary one-way valve
(Check valve or check valve)
Function: Only allows forward flow of oil, no backflow is allowed.
Category: Straight through, Right angle
Structure: valve body, valve core cone, steel ball type, spring, etc
Working principle: When the fluid flows in from the inlet, the spring contracts under the action of hydraulic force, and the valve port opens
Opening pressure: 0.04-0.1MPa
Make back pressure valve: Pk=0.2-0.6 MPa
Hydraulic pilot-operated check valve
Function: Positive circulation, reverse controlled circulation
Directional control valve
Directional control valve
Structure: ordinary one-way valve+hydraulic control device
Working principle: K is not connected to pressure oil and works in the same way as a regular one-way valve; K-way pressure oil, valve port open, can flow in reverse
Application:

The hydraulic control one-way valve has good anti sealing performance
Commonly used for pressure holding, locking, and balancing circuits
Shuttle valve
Equivalent to a combination of two one-way valves
It has the function of logical 'or gate' Widely used in logic circuits and program control circuits, commonly used in the transition from manual to automatic circuits.
Due to the routing process of the shuttle valve during the reversing process, when the intake or exhaust volume of a certain interface is very small, the pressure difference between the front and rear of the valve cannot produce the pressure difference that causes the valve to reverse normally, resulting in the valve being unable to reverse and stopping midway, causing the valve to malfunction. So when using it, be careful not to use a variable diameter connector at a certain interface, which may cause the path to be too small.
Double pressure valve
Door function
quick exhaust valve
Function: It is designed to accelerate the speed of cylinder movement and facilitate rapid exhaust.
The disinfection of the working cylinder under given conditions largely depends on the size of the control valve. If it is necessary to increase the speed (especially when it is necessary to increase the one-way speed), a quick exhaust valve can be installed without having to bear the cost of a large control valve.
Slide valve directional valve
(1) Structure and working principle of directional valve
structure
Valve body: cylindrical hole with multi-stage countersunk grooves
Valve core: a cylindrical body with multiple circular grooves
(2) Classification
Divided by the number of work positions: two, three, four, etc. Position: The number of working positions of the valve core relative to the valve body.
Divided by the number of channels: two-way, three-way, four-way, 5-way, etc. Tong: The main number of oil ports connected to the outside of the valve body
Divided by control mode: electromagnetic directional valve, hydraulic directional valve, electro-hydraulic directional valve, motorized directional valve, manual directional valve
Main structural form of slide valve directional valve
Main structural form of slide valve directional valve
Meaning of graphic symbols:
1. Bit - represented by squares, where a few bits correspond to several squares
2. The number of intersections between the beginning and end of the ┴ and ┬ arrows, as well as the blocking symbol, and a square is called the number of connections.
3. The oil port has a fixed orientation and meaning, p - inlet port (bottom left), T - return port (bottom right), A.B - working oil port connected to the actuator (top left and top right).
4. Spring - W, M, drawn on both sides of the square
5. Normal position - In the schematic, the oil circuit should be connected in the normal position. Like a three position valve in the middle compartment.
The neutral function of the slide valve: that is, the state when the slide valve is in the normal state, including M-type, H-type, O-type, P-type, M-type, etc.
(3) Main performance of directional valve
1) Reliable work
2) Low pressure loss
3) Small internal leakage
4) Switching time and reset time
5) Long service life
(4) Common operating methods
1. Manual
2. Mobile
3. Electromagnetic motion
4. Hydraulic
5. Electro hydraulic