Product Description
DUCTILE IRON GROOVED RIGID COUPLINGS AND PIPE FITTINGS FOR FIRE FIGHTING SYSTEMS
China JUNTONG,Focus on “making production” with spirit of craftsman like reliable,experienced,professional,great HangZhou CHINAMFG Machinery Auxiliaries Co.,Ltd.is established in 2004,Casting from 1997,is a professional manufacturer specialized in the R&D,production,sale and service of ductile iron Grooved Couplings and Pipe Fittings. Located in HangZhou,we enjoy convenient transportation access and comfortable environment.
Strong and Powerful.Our company is a large enterprise group composed of 1 main factory,three branch factories which covers an area of 68000 and has an annual production capacity of more than 50000 tons.We have an experienced team,around 500 skilled staff members ,20 percent of them are engineers and technicians who are professional and hardworking.four factories
With a wide range,good quality,reasonable prices and stylish designs,our products are extensively used in drinking water,fire control,medicine,chemistry and other industries.
Top Quality.Selling well in all cities and provinces around China,our products are also exported to clients in many countries and regions.In addition,We also welcome OEM and ODM orders.We have widely recognized by customers and enjoy a good reputation across the world .The company was approved by iso9001,14001,18001.Gradually,the company has acquired most of the authoritative certifications,including CE,FM and UL.
State of the art equipment.Our company has the state-of-the-art-equipment for both production and inspection .We equipped with 8 automation molding line,2automation sand mixing line70,CNC lathe,10WINTER mold machining center ,5automatic box sealing line,7paiting lines and so on.
Reliable Quality Assurance.We conduct strict quality inspections over each batch.We have a very professional laboratory with full serious of testing and inspection as Leak testing,raw material receiving inspection,batch chemical composition inspection,Microstructure testing,Advanced spectrometer ,dimension inspection,first article inspection,in-process inspection and final visual inspection.In order to ensure high quality.
In recent years,guaranteeing stable and timely supply,credible quality and sincere service,our products are widely recognized and trusted by users and can meet continuously changing economic and social needs.
We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success! Product Application FM/UL Approved ASTM A536 Ductile Iron Grooved Couplings and Grooved Fittings
JUNT Grooved Piping System
The JUNT grooved piping system is 1 of the most advanced, versatile, economical and reliable systems available today. After the pipe ends are grooved a gasket is stretched over the pipe ends. The coupling segments are then placed over the gasket and the bolts and nuts are fastened resulting In a secure and leak free joint.
A coupling can be installed 3-4 times faster than a comparable welded or brazed joint and there is no need fora flame or welding CHINAMFG on the job site. A coupling can be installed by fastening a pair of bolts and nuts while using only a wrench or spanner, whereas a comparable flanged joint requires the fastening of many bolts and nuts with a pair of wrenches. The grooved system allows for easy material take-offs and unlike a threaded system, there is no need to allow for added pipe length for thread engagement. With the removal of just a few bolts 1 can easily access the system for cleaning, maintenance, changes and or system expansion.
| SPECIFICATIONS FOR GROOVED COUPLINGS AND FITTINGS | |
| MATERIAL | Ductile iron QT450-12 ,Ductile Iron to ASTM A536 |
| CERTIFICATE | FM UL CE CUL ISO |
| PRESSURE | 300PSI 2.5MPA |
| THREAD TYPE | BSPT NPT |
| SURFACE TREATMENT | PAINT, EPOXY, GALVANIZED, DACROMET |
| DELIVERY TIME | Normally within 15-30 days |
| PAYMENT TERMS | T/T, LC |
Main Features1) Ductile iron ASTM A536 GRADE 65-45-12
2) FM,UL ,CE,IOS,CUL CERTIFICATES
3) CHINAMFG RUBBER GASKET
4) PAINT RAL-3000,ORANGE,GALVANIZED
5) 300PSI ,500PSI ,2.5MPA
Certifications
Detailed Images
Main FeaturesName: Grooved Couplings and Fittings
Brand: JUNT
Original:CHINA
1) Ductile iron ASTM A536 GRADE 65-45-12
2) FM,UL ,CE,IOS,CUL CERTIFICATES
3) CHINAMFG RUBBER GASKET
4) PAINT RAL-3000,ORANGE,GALVANIZED
5) 300PSI ,500PSI ,2.5MPA
Housing FeaturesName: Coupling Housing
Brand: JUNT
Original: CHINA
Ductile Iron: Standard coupling housings and fittings are made of ductile Iron conforming to ASTM A536 Gr.65-45-12. The properties of Grade 65-45-12 ductile iron are as follows;65,000 CHINAMFG (448 MPa) tensile strength, 45,000 CHINAMFG (310 MPa) yield strength and 12% elongation.
Machine Parts
Name: BULTS AND NUTS
Brand: JUNT
Original: CHINA
Domestic famous materials, Oval Neck bolts and heavy hoxagon nuts at ASTM A183/ISO 898,GRADE 8.8,HOT GALVANIZED.
JUNT products utilize oval neck track bolts and heavy duty hex nuts,available either in UNC threaded or ISO metric threaded*. The oval neck track bolts mate into the oval holes in the housing segments to allow for easy tightening using only a single wrench/spannerMain Parts
Name: Rubber Gaskets
Brand: JUNT
Original: CHINA
EPDM,SILICON RUBBER,PRE-LUBRICANT
During assembly the gasket is first stretched over the pipe ends which forms the initial seal. As the housing segments are installed and secured the pressure responsive gasket is slightly compressed to form a leak-tight joint. The strength of the seal is further enhanced by internal line pressure that creates downward pressure on the lips of the gasket.
Our Service
Pre-Sales Service
* Inquiry and consulting support.
* Sample testing support.
* View our Factory.After-Sales Service
* Training how to instal the machine, training how to use the machine.
* Engineers available to service machinery overseas.
* Attend exhibition
Packing & Delivery
| Pallets Packaging | |
| Size | 110 (L) * 110 (W) * 12 (H) |
| Weight | 0.6-1.2 T |
| Packaging Details |
The normal package is pallet with carton box (Size: L*W*H).If container is too tigher,we will use pe film for packing or pack it according to customers special request. |
| Carton Box | |
| Size | S and L Type |
| Weight | 12-50KG |
| Packaging Details |
Two Sizes Type: 1. Small One(S) 353 (L) * 353 (W) * 155 (H) 2. Large One (L) 353 (L) * 353 (W) * 310 (H) |
Related Products
ROLL GROOVING MACHINE
HOLE CUTTING MACHIE
PIPE CUTTING MACHINE
Can Rigid Couplings Accommodate High Torque and High-Speed Applications?
Yes, rigid couplings are well-suited for high torque and high-speed applications. Their design and construction allow them to efficiently transmit large amounts of torque and handle high rotational speeds without compromising performance or introducing backlash.
Rigid couplings are typically made from robust materials, such as steel or aluminum, which provide high strength and stiffness. This allows them to withstand substantial torque loads without deformation or failure. Additionally, rigid couplings do not have flexible elements, such as elastomers or springs, which can be a limiting factor in high-torque applications.
The absence of flexible elements also means that rigid couplings have minimal backlash. Backlash is the clearance between mating teeth in a coupling and can cause position inaccuracies, especially in high-precision systems. Since rigid couplings have a solid, one-piece design, they offer precise and immediate torque transmission, making them suitable for applications requiring high accuracy and repeatability.
Furthermore, the solid construction of rigid couplings allows them to handle high rotational speeds. They do not exhibit the bending or torsional flexibility seen in some other coupling types, which can be limiting factors in high-speed applications. As a result, rigid couplings are commonly used in various high-speed machinery, such as power transmission systems, motors, pumps, and industrial equipment.
However, it is essential to ensure proper alignment and installation when using rigid couplings in high-torque and high-speed applications. Any misalignment between the shafts can lead to increased stresses and premature failure. Regular maintenance, including shaft alignment checks, can help ensure optimal performance and longevity in such demanding applications.
In summary, rigid couplings are an excellent choice for high torque and high-speed applications due to their robust design, minimal backlash, and ability to provide precise torque transmission. When correctly installed and maintained, rigid couplings can reliably handle the demands of various industrial and mechanical systems.
How Does a Rigid Coupling Handle Angular, Parallel, and Axial Misalignment?
Rigid couplings are designed to provide a fixed and rigid connection between two shafts. As such, they do not have any built-in flexibility to accommodate misalignment. Therefore, when using a rigid coupling, it is essential to ensure proper shaft alignment to avoid excessive forces and premature wear on connected equipment.
Angular Misalignment: Angular misalignment occurs when the axes of the two shafts are not collinear and form an angle with each other. Rigid couplings cannot compensate for angular misalignment, and any angular misalignment should be minimized during installation. Precision alignment techniques, such as laser alignment tools, are often used to achieve accurate angular alignment.
Parallel Misalignment: Parallel misalignment, also known as offset misalignment, happens when the axes of the two shafts are parallel but have a lateral displacement from each other. Rigid couplings cannot accommodate parallel misalignment. Therefore, precise alignment is crucial to prevent binding and excessive forces on the shafts and bearings.
Axial Misalignment: Axial misalignment occurs when the two shafts have an axial (longitudinal) displacement from each other. Rigid couplings cannot address axial misalignment. To prevent thrust loads and additional stresses on bearings, it is essential to align the shafts axially during installation.
In summary, rigid couplings are unforgiving to misalignment and require precise alignment during installation. Any misalignment in a rigid coupling can lead to increased wear, premature failure of components, and reduced overall system efficiency. Therefore, it is crucial to use appropriate alignment techniques and tools to ensure optimal performance and longevity of the connected equipment.
What is a Rigid Coupling and How Does it Work?
A rigid coupling is a type of mechanical coupling used to connect two shafts together at their ends to transmit torque and rotational motion without any flexibility or misalignment accommodation. Unlike flexible couplings, rigid couplings do not allow for angular, parallel, or axial misalignment between the shafts. The main purpose of a rigid coupling is to provide a strong and solid connection between two shafts, ensuring precise and synchronous power transmission between them.
Structure and Design:
Rigid couplings are typically made from durable materials such as steel, stainless steel, or aluminum, which can withstand high torque and load applications. The coupling consists of two halves, each with a cylindrical bore that fits tightly onto the respective shafts. The two halves are then fastened together using bolts or set screws to ensure a secure and rigid connection.
Working Principle:
The working principle of a rigid coupling is straightforward. When the two shafts are aligned precisely and the coupling is securely fastened, any torque applied to one shaft gets directly transferred to the other shaft. The rigid coupling essentially makes the two shafts act as one continuous shaft, allowing for synchronous rotation without any relative movement or play between them.
Applications:
Rigid couplings are commonly used in applications where precise alignment and torque transmission are essential. Some common applications of rigid couplings include:
- High-precision machinery and equipment
- Robotics and automation systems
- Precision motion control systems
- Machine tools
- Shaft-driven pumps and compressors
Advantages:
The key advantages of using rigid couplings include:
- High Torque Transmission: Rigid couplings can handle high torque and power transmission without any loss due to flexibility.
- Precision: They provide accurate and synchronous rotation between the shafts, making them suitable for precise applications.
- Simple Design: Rigid couplings have a simple design with minimal moving parts, making them easy to install and maintain.
- Cost-Effective: Compared to some other coupling types, rigid couplings are generally more cost-effective.
Limitations:
Despite their advantages, rigid couplings have certain limitations:
- No Misalignment Compensation: Rigid couplings cannot accommodate any misalignment between the shafts, making precise alignment during installation crucial.
- Transmits Vibrations: Since rigid couplings do not dampen vibrations, they can transmit vibrations and shocks from one shaft to the other.
- Stress Concentration: In some applications, rigid couplings can create stress concentration at the ends of the shafts.
In summary, rigid couplings are ideal for applications that require precise alignment and high torque transmission. They offer a robust and straightforward solution for connecting shafts and ensuring synchronous power transmission without any flexibility or misalignment accommodation.
editor by CX 2023-11-06