China Professional PV Series Quick Connectors Stainless Steel 90 Degree Pipe Air Tube Fitting Coupling

Product Description

OCO PV Series Quick Connectors Stainless Steel 90 Degree Pipe Air Tube Fitting Coupling


Introducing our OCO Push-to-Connector Stainless Steel 316L Union Elbow Pneumatic Air Fittings, designed for seamless 90-degree right-angle tube connections in pneumatic systems.

Key Features:

Stainless Steel Durability: These fittings are crafted from high-quality 316L stainless steel, providing exceptional corrosion resistance and long-lasting performance, even in challenging industrial environments.

Union Elbow Design: The union elbow design ensures secure and reliable connections while allowing for a 90-degree right-angle configuration. This design simplifies tubing installations and minimizes the risk of air leakage.

Push-to-Connect Technology: Our fittings feature a push-to-connect mechanism for quick and tool-free installation. Simply push the tubing into the fitting, and it locks securely in place. This not only saves time but also enhances system efficiency.

Precision Engineering: These fittings are precision-engineered to maintain airtight connections, ensuring minimal air loss and consistent pneumatic system performance.

Wide Application Range: Whether your industry is manufacturing, automation, or any field that relies on pneumatic systems, our fittings are versatile and compatible with various tubing materials. They are designed to meet a wide range of applications.

Easy Maintenance: Maintenance is simplified, making it easy to keep your pneumatic system running smoothly. Replacing or reconfiguring components is hassle-free.

Upgrade your pneumatic system with OCO Push-to-Connector Stainless Steel 316L Union Elbow Pneumatic Air Fittings. Benefit from reliable, airtight connections, durable materials, and simplified installation, all while enhancing the efficiency of your pneumatic applications. It’s the ideal choice for industries that demand precision and dependability.



1. Fast connection.
2. High temperatureup to 150 degree.
3. Small, compact design.
4. Allow full flow through the hose/tubing I.D. with no smaller orifice required as in barb fittings.
5. Stainless steel push-in fittings are manufactured of acid-resistant, corrosion-free stainless steel        of highest material quality
6. Application in the food and pharmaceutical industry.
7. All parts can be cleaned easily and completely due to precise manufacturing and accurate surface processing.

8. Low fabrication tolerances and high quality manufacturing workmanship.





Product Name Stainless Steel Push in Fitting
Tubing O.D. 4-16mm
Operating Pressure 0~12 bar
Operating Temperature -20 ~ 150°C
Vacuum Rating To 28″ Hg
Application Air, Vaccum, Steam, Beverage, Oil
Types 90 degree
Capacity Over 10000 pcs/month
Marketing Area All over the world

Other Models:

Tube(Metric) Tube(Inch)
PV4 PV13 PV1/8
PV5 PV14 PV5/32
PV6 PV15 PV3/16
PV7 PV16 PV1/4
PV8   PV5/16
PV9   PV3/8
PV10   PV1/2


Plastic bag + Box + Carton Box


Ways: Sea, Air, Courier
Export port: HangZhou or ZheJiang , China
Delivery time: 3 days to 30 days depends on actual orders.
Express: TNT, UPS, DHL, FedEx, SF Express.

Our company

We have a young, efficient, innovative and experienced technical team that can design and develop new products by itself. According to the different needs of customers, we produce a variety of special specifications of products, in order to catch up with the imported similar products, continuous progress, and with high quality, to provide you with “one-stop” complete solutions.  

Our products are mainly used in automobile manufacturing, industrial automation, food machinery, medical and other industries.Now it has developed into a large scale of domestic production enterprises, involving a wide range of industries,relatively rich products.

Focus on environmental protection and first quality.

1. Vision: harmonious coexistence, development and innovation.

2. Concept: The pursuit of excellence, achievement of the future.

3. Criteria: honesty and trustworthiness, dedication and dedication.

Why Choose Us?: Your Business Partner.

When it comes to industrial manufacturing, choosing the right partner can make all the difference. At OCOFLOW, we’re your top choice, and here’s why:

1. Expertise: With years of experience, our skilled team excels in every facet of industrial manufacturing, ensuring top-quality products.

2. Custom Solutions: We tailor our offerings to meet your unique needs. Your success is our priority, and our adaptability sets us apart.

3. Quality Assurance: Quality is our commitment. 

4. On-Time Delivery: We respect your timelines. Our streamlined processes guarantee punctual delivery without compromising quality.

5. Affordability: Competitive pricing, without compromising quality, helps optimize your investment.

6. Eco-Conscious: We embrace eco-friendly practices, minimizing our environmental impact.

7.Dedicated Support: Our support team is always ready to address your needs promptly.

8.Choose OCOFLOW for excellence, reliability, and a prosperous industrial future. Your success, our promise.

Transparent plastic bag + neutral carton + neutral box
Custom packaging are available
Shipping :
Export port: HangZhou or ZheJiang , China
Shipping way: by sea, by air, by courier
Delivery time 3 days to 30 days depends on actual orders.
Payment Terms
We accept T/T, L/C, Paypal,etc.

Return Policy: 
We assure you 1 year policy after shipment. If there is any problem during this period, please contact us for support.



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stainless steel coupling

Can Stainless Steel Couplings Handle Misalignment Between Shafts Effectively?

Yes, stainless steel couplings are designed to handle certain degrees of misalignment between shafts effectively. While they may not provide as much flexibility as some elastomeric couplings, stainless steel couplings can accommodate angular, parallel, and axial misalignments to a certain extent.

Angular Misalignment:

Stainless steel couplings can tolerate small angular misalignments between the shafts. Angular misalignment occurs when the axes of the connected shafts are not perfectly aligned. Stainless steel couplings can handle these slight deviations and still transmit torque efficiently. However, excessive angular misalignment can cause additional stress on the coupling and may lead to premature wear or failure.

Parallel Misalignment:

Stainless steel couplings can also accommodate parallel misalignment, which occurs when the shafts are not perfectly aligned along their axis but run parallel to each other. They can compensate for minor deviations and allow smooth rotation between the shafts. However, if the parallel misalignment is beyond the coupling’s rated capacity, it can lead to increased loads on the coupling and the connected equipment.

Axial Misalignment:

Stainless steel couplings can handle limited axial misalignment, where the shafts have slight axial displacement along their common axis. The coupling’s design may allow for some axial movement without compromising performance. However, it is essential to ensure that the axial misalignment does not exceed the coupling’s specified limits to avoid detrimental effects.

It is important to select the appropriate stainless steel coupling type and size based on the specific misalignment requirements of the application. Regular inspection and maintenance can also help identify and address any misalignment issues early on, ensuring the coupling continues to operate effectively and with minimal wear.

stainless steel coupling

Causes of Failure in Stainless Steel Couplings and Prevention

Stainless steel couplings are designed for durability and reliability, but like any mechanical component, they can experience failure under certain conditions. Understanding the potential causes of failure and taking preventive measures can help ensure the longevity and performance of stainless steel couplings. Some common causes of failure include:

1. Overloading: Exceeding the maximum torque or load capacity of the coupling can lead to deformation or breakage. To prevent overloading, it’s essential to choose a coupling with the appropriate torque and load ratings for the specific application.

2. Misalignment: Misalignment between shafts can create additional stresses on the coupling, leading to premature wear and failure. Regularly inspect and adjust shaft alignment to ensure it stays within the coupling’s allowable limits.

3. Corrosion: While stainless steel is corrosion-resistant, it is not immune to corrosion, especially in harsh environments with exposure to corrosive substances. Regular cleaning and maintenance can help prevent corrosion-related failure.

4. Fatigue: Repeated cycles of loading and unloading can cause fatigue failure in the coupling. Ensure that the coupling’s rated fatigue life matches the application’s requirements and replace worn-out couplings promptly.

5. Installation Errors: Improper installation, such as insufficient tightening of set screws or improper keyway fitting, can lead to coupling slippage and failure. Follow the manufacturer’s guidelines for correct installation procedures.

6. Contamination: Foreign particles or debris can get trapped between the coupling’s mating surfaces, leading to uneven loading and premature wear. Keep the coupling and surrounding area clean to avoid contamination-related issues.

7. Temperature Extremes: Extreme temperature variations can affect the material properties of the coupling and lead to failure. Choose couplings rated for the temperature range of the application.

8. Vibration and Resonance: Excessive vibration or resonance can cause stress concentrations in the coupling, leading to fatigue failure. Dampen vibrations and resonance using appropriate mounting and isolation techniques.

9. Material Defects: Occasionally, manufacturing defects in the stainless steel coupling can cause premature failure. Source couplings from reputable manufacturers with a track record of quality and reliability.

Preventive Measures: To prevent failure and ensure optimal performance, consider the following preventive measures:

  • Choose the right coupling type and size for the application’s torque and load requirements.
  • Regularly inspect and maintain the coupling, checking for signs of wear, misalignment, or contamination.
  • Ensure proper installation following the manufacturer’s guidelines.
  • Monitor operating conditions and address any unusual vibrations or temperature variations promptly.
  • Perform regular shaft alignment checks to avoid excessive misalignment.
  • Use protective measures such as seals or covers to prevent contamination and corrosion.
  • Monitor coupling fatigue life and replace worn-out couplings before they reach their fatigue limit.

By understanding the potential causes of failure and implementing appropriate preventive measures, users can increase the reliability and longevity of stainless steel couplings in their applications.

stainless steel coupling

Stainless Steel Coupling: Overview and Distinctive Features

A stainless steel coupling is a type of coupling made from stainless steel material. It is designed to connect two shafts in mechanical power transmission systems. Here are the key characteristics that differentiate stainless steel couplings from other types:

1. Material:

As the name suggests, stainless steel couplings are manufactured using stainless steel, a corrosion-resistant alloy composed of iron, chromium, and other elements. The stainless steel construction provides excellent resistance to rust, oxidation, and chemical corrosion, making these couplings suitable for harsh environments.

2. Corrosion Resistance:

The primary advantage of stainless steel couplings is their high resistance to corrosion. This property allows them to withstand exposure to moisture, chemicals, and extreme temperatures, making them ideal for applications in marine environments, chemical processing, food and beverage industries, and more.

3. Strength and Durability:

Stainless steel is a strong and durable material, which gives stainless steel couplings high load-bearing capabilities and a long service life. These couplings can handle heavy loads and provide reliable performance under demanding conditions.

4. Hygienic Properties:

Stainless steel couplings are known for their hygienic properties, making them suitable for applications in the food and pharmaceutical industries. They are easy to clean and maintain, ensuring the transmission of power without any risk of contamination.

5. Temperature Resistance:

Stainless steel couplings can operate efficiently over a wide temperature range, making them versatile in various industrial settings.

6. Aesthetic Appeal:

Stainless steel has a visually appealing, polished surface finish, making stainless steel couplings suitable for applications where aesthetics are important.

7. Compatibility:

Stainless steel couplings can be used with a wide range of shaft materials, including stainless steel, carbon steel, and others, without causing galvanic corrosion.

8. Reduced Maintenance:

Due to their corrosion resistance and durability, stainless steel couplings require minimal maintenance, resulting in cost savings and increased uptime.

Overall, stainless steel couplings offer a combination of corrosion resistance, strength, and versatility, making them a preferred choice in industries where durability and reliability are essential.

China Professional PV Series Quick Connectors Stainless Steel 90 Degree Pipe Air Tube Fitting Coupling  China Professional PV Series Quick Connectors Stainless Steel 90 Degree Pipe Air Tube Fitting Coupling
editor by CX 2024-02-15

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