S valve concrete pump is a commonly used type of concrete pump, which is named from the form of internal distribution valve – S-tube valve. Why is S valve concrete pump so popular in concrete machinery market? What are the advantages of S valve over other distribution methods? Let’s take a look!
Economical & Practical
High Pumping Pressure
Perfect Pumping Performance
Super Wear-resistant and Durable
Good Sealing Characteristic
Hot Models Recommendation of LUTON S Valve Concrete Pump
HBT Series S Valve Diesel Concrete Trailer Pump
Max. Theo. Output: 30m3/h~90m3/h
Max. Theo. Pumping Length: 300m~1200m
Max. Theo. Pumping Height: 100m~300m
Max. Theo. Pumping Pressure：6MPa~20MPa
Distribution Method: S Valve
Diesel Engine: Yuchai/Weichai 52~176kW
HBT Series S Valve Electric Concrete Trailer Pump
Max. Theo. Output: 30m3/h~80m3/h
Max. Theo. Pumping Length: 450m~1200m
Max. Theo. Pumping Height: 140m~300m
Max. Theo. Pumping Pressure：6MPa~16MPa
Distribution Method: S Valve
Electric Engine: 37~110kW
JBS Series S Valve Diesel Concrete Mixer Pump
Max. Theo. Output: 30m3/h~50m3/h
Max. Theo. Pumping Length: 300m~500m
Max. Theo. Pumping Height: 120m~130m
Max. Theo. Pumping Pressure：6MPa / 10MPa
Mixer Machine Type：Drum Mixer
Distribution Method: S Valve
Diesel Engine: Yuchai/Weichai 52~92kW
JBS Series S Valve Electric Concrete Mixer Pump
Max. Theo. Output: 30m3/h~40m3/h
Max. Theo. Pumping Length: 300m~500m
Max. Theo. Pumping Height: 120m
Max. Theo. Pumping Pressure：10MPa
Mixer Machine Type: Drum Mixer
Distribution Method: S Valve
Electric Engine: 37kW/45kW
JBS Series S Valve Diesel Concrete Mixer Pump
Max. Theo. Output: 40m3/h
Main Oil Pump: Kawasaki
Mixer Machine Model: Twin-shaft Mixer JS500/JS750
Concrete Cylinder diameter/stroke: Φ200/1000 mm
Distribution Method: S Valve
Diesel Engine: 129kW
Discharge outlet diameter: Φ180 mm
JBS Series S Valve Diesel Concrete Mixer Pump
Max. Theo. Output: 40m3/h~50m3/h
Max. Theo. Pumping Length: 400m
Max. Theo. Pumping Height: 120m
Max. Theo. Pumping Pressure：10MPa
Mixer Machine Type: Vertical-shaft Mixer
Distribution Method: S Valve
Diesel Engine: Weichai Deutz 82kW/129kW
JBS Series S Valve Electric Concrete Mixer Pump
Max. Theo. Output: 40m3/h
Main Oil Pump: Kawasaki
Mixer Machine Model: Twin-shaft Mixer JS500/JS750
Mixer Productivity: 25~35m3/h
Concrete Cylinder diameter/stroke: Φ200/1000 mm
Distribution Method: S Valve
Electric Engine: 45kW
JBS Series S Valve Electric Concrete Mixer Pump
Max. Theo. Output: 40m3/h~50m3/h
Max. Theo. Pumping Length: 400m
Max. Theo. Pumping Height: 120m
Max. Theo. Pumping Pressure：10MPa
Mixer Machine Type: Vertical-shaft Mixer
Distribution Method: S Valve
Electric Engine: 55kW/90kW
S Valve Truck-mounted Concrete Pump
Max. Theo. Output: 50m3/h
Max. Theo. Pumping Pressure：9MPa
Mixer Machine Type: Twin-shaft Mixer JS500
Distribution Method: S Valve
Main Motor Power: 45kW
S Valve Concrete Boom Pump
Max. Theo. Output: 85~200 m3/h
Max. Theo. Pumping Pressure：8.7~10 MPa
Boom Folder Form: 4Z/5RZ/6RZ/7R
Distribution Method: S Valve
What is S Valve Concrete Pump
In concrete pump function systems, concrete distribution system is a crucial part. In order to pump concrete materials continuously, in pumping process, the two piston connecting rods in the twin concrete cylinders designed side by side, driven by hydraulic system, will suck and push concrete alternately.
This means that the two concrete cylinders connected to hydraulic cylinders should also alternately connect to the concrete hopper and output port of the pump body:
1,2-main oil cylinders; 3-water tank; 4-the reversing device; 5,6-concrete cylinders; 7,8-two concrete pistons; 9-large bearing seat; 10,11-swing oil cylinders; 12-the spectacle plate; 13-the distribution valve (S-shaped valve); 14-the discharge outlet; 15-hopper
1.In the forward pumping process, when the distribution valve connects one concrete cylinder with the hopper, concrete in the hopper is sucked into the concrete cylinder by the hydraulic piston rod in this hydraulic cylinder; Meanwhile the distribution valve connects the other concrete cylinder with the output port, concrete material is pushed out of the concrete cylinder and into the conveying pipeline by the other hydraulic piston rod, to realize pumping concrete finally.
2.In the reverse pumping process, when the distribution valve connects one concrete cylinder with the output port, concrete material in the conveying pipeline is sucked into the concrete cylinder; Meanwhile distribution valve connects another concrete cylinder with the hopper, material in the cylinder is pushed into the hopper. In this way, reverse pumping is realized.
In order to fulfill the whole pumping process, all sorts of distribution methods are invented and applied in concrete pump systems. Among them, S valve is the most widely used one.
Characteristics and Advantages of S Valve Concrete Pump
- High efficiency, stability and reliability
Adopt double-pump double-circuit open hydraulic system and world famous brand components, S valve concrete pump is with simple system, high pumping efficiency, stability and reliability.
- Good versatility, easy to repair and replace parts
S valve technology is now the most widely used distribution method. It suits to all sorts of concrete pumping machienry, from pump trailer, pump truck to boom pump and so on. The parts is versatile so they are all easy to repair and replace.
- Good versatility, easy to repair and replace parts
S valve technology is now the most widely used distribution method. It suits to all sorts of concrete pumping machienry, from pump trailer, pump truck to boom pump and so on. The parts is versatile so they are all easy to repair and replace.
- Simple structure, economical and practical.
S valve concrete pump adopts the simple-structure s-valve, swinging back and forth, to realize continuous pumping process. It is currently recognized as the most economical and practical distribution valve solution in concrete pumping equipment.
- Good sealing performance ensuring Higher pumping pressure and stronger pumping capacity
S valve used in cocrete pump providing good sealing performance to the whole pumping system. This lead to higher pumping pressure and stronger pumping capacity compared with other concrete pumps with different distribution methods.
- Less wear and long service life
The s pipe is integrally cast with high manganese steel, and the inner wall of the s pipe is surfacing with high wear-resistant materials, the s valve concrete pump has the dual advantages of high pressure resistance and wear resistance.
- Less energy consumption
Due to the adoption of piston structure automatic air pressure technology and S-valve distribution scheme, the S-valve concrete pump can pump concrete farther and higher under the premise of consuming the same amount of energy.
- more friendly to the environment
The s valve concrete pump has lower switching noise, and its good sealing determines less material loss and air pollution, so it is more green and environmentally friendly.
1-discharge port; 2-large bearing seat; 3. s tube;
4-cutting ring; 5-small bearing seat; 6. nut
S Valve Used in Concrete Pump
The valve body of the s-tube valve presents the shape of letter s. It is mainly composed of discharge port, large bearing seat, seal, s tube, small bearing seat, as well as special-shaped nut, transition sleeve, spectacle plate, cutting ring, rubber spring and other parts. S valve directly affects pumping performance of concrete pumps.
The tube body of s valve is divided into two types: variable diameter type and constant diameter type.
The discharge port of the s valve is fixed on the output port of the hopper through the large bearing seat, and the other port is fixed above the outlets of the two concrete cylinders through the small bearing seat. Driven by the hydraulic device, the port of the s valve can swing left and right to connect the two concrete cylinders alternately.
S-tube valves have become the general distribution valve solution in concrete pumps, and are widely used in various pumping equipment such as mortar pumps, trailer pumps, mixing pumps and boom pump trucks.
One of the most important reasons on why s-valve concrete pumps are so popular is the unique advantage of S valve: the floating and self sealing characteristics of the cutting ring.
The floating nature of the cutting ring means that there is no axial fixing device on the s valve, and it can move freely; the self sealing means that the high-press concrete will press on a designed ring surface, so that the cutting ring and the spectacle plate are tightly attached.
Floating and clinging can make the cutting ring automatically compensate the gap under the high pressure of concrete after the glasses plate and cutting ring are worn, so as to ensure a tight fit with the glasses plate, thereby ensuring good sealing performance. That is to say, the higher the concrete pressure, the better the sealing performance will be.
Due to the good self sealing of the s valve , there is relatively less wear on the cutting ring and other parts, and the service life is longer.
Other Types of Valves Used in Concrete Pump
Besides s valve concrete pump, there are also other distribution types used in various concrete pump systems, such as gate valve, C valve, skirt valve and so on.
Gate Valve
Gate valve is mainly used in concrete pump trailer systems. According to different structures, gate valve is also divided into two types: inclined gate valve and flat gate valve.
Advantages of Gate Valve
1.The moving direction of gate valve is vertical or nearly vertical to the flowing direction of the concrete material, so gate valve has strong shearing capacity and can pump concrete with low slump.
2.Gate valve is set under the hopper, which avoid concrete segregation, with good suction performance.
Disadvantages of Gate Valve
1.Gate valve has poor sealing performance and is not suitable for high-pressure and long-distance pumping of concrete.
2.Since gate valve has two discharge holes, a Y-shaped pipe must be installed, which has poor conveying performance and is easy to block.
3.The gate is easily stuck, resulting in failure to seal and poor material absorption.
C Valve
C valve is also known as elephant trunk valve, mainly used in concrete pump truck systems. It is one of the leading technologies of early Portzmeister in concrete machinery.
Advantages
1.Long service life. Since the mechanism that controls the swing of the c-valve is located above the hopper, which is not easily corroded by concrete.
2.Good sealing performance. Adopting design of spectacle plate and cutting ring, the gap between the cutting ring and the spectacle plate is controlled by rubber spring in the cutting ring.
3.Easy to assemble and disassemble.
Disadvantages
Since the radius of the lower bend of C valve is small, the resistance of the concrete in the pipe is large, which easily leads to swing difficulty of C valve.
Skirt Valve of Schwing
Skirt valve is a patented product designed and developed by Schwing in 1982, mainly used in concrete boom pump trucks and truck mounted line concrete pumps.
Advantages:
1.Good internal fluidity due to big inner diameter, big outlet and no bending part.
2.Good sealing and high pumping pressure.
Disadvantages:
1.Skirt valve is large in size, so it takes up large space in the hopper.
2.Swing inside the hopper, skirt valve is easy to resistance from the hopper concrete.
Each distribution valve has its own characteristics, but from the application range, the performance of the s tube valve is still the best choice.
With the ideal sealing performance, wear resistance and long service life, s valve concrete pump can competent higher and farther concrete pumping.
Recommendation of Other Types Concrete Pump
There are also many other types of concrete pump of LUTON GROUP, widely used in concrete construction: small portable concrete pump, secondary construction concrete pump, long boom concrete pump, shotcrete concrete pump and so on. All of them are with their unique characteristics, high pumping performance, stable working and durable product quality. Welcome to contact us to get the details about all sorts of concrete pump from LUTON GROUP.
