Product Description

PVC VALVES 
System: PVC valves System

Scope: This specification covers PVC valves for pressure applications. This system is Intended for pressure applications where the operating temperature will not exceed 140°F, and work pressure is 1.0 MPa (PN10)

Specification: PVC valves shall be manufactured from virgid 
PVC(polyvinyl chloride) vinyl compounds.

PVC valves shall conform to ISO 9393-1:2).

“ERA” plastic pipe export volume has ranked first in China’s plastic pipe industry for many continuous years, while the production and sales volume ranked second in the industry. 

Supported by Modern Equipment
ERA PIPING (ZHangZhouG) Co,Ltd has developed over 10,000 sets of different moulds, with 900 advanced injection and over 210 extrusion machines. Equipments’ total value reaches nearly 100 million USD. 

Implementing Strict Quality Control
We strictly follow ISO 9001 quality system and ISO 14001 environment system to arrange manufacturing. With high-class raw material, strict quality control in both the workshop and laboratory with various professional testing equipme1nt, we ensure that every single product meets the corresponding inspection standard.

Research center

FAQ
1.What is your MOQ?
 Our MOQ is usually 5 CTNS.
 
2.What is your delievery time?
 The time of delievery is around 30-45days.
 
3.What is the shipping port?
 We ship the goods via HangZhou or ZheJiang port.
 
4.What is your payment terms?
 We accept 30% T/T in advance,70% in the period of shipment or 100% L/C.
 
5.How should I contact you?
 You can contact us with Trade Manager or send us an email by click Contact Supplier bottom.
 
6.What is the location of your company?
Our company is located in the HangZhou ZHangZhoug Province,China.
If you would like to have a visit, you are much welcome.
 
7.How about the samples?
We could send you the samples ,most samples are free to send to most places in China.If sent to other countries,transport fee shoule be paid by you.
 
8.Why choose us?
1 Genuine produces with excellent quality and competitive price.
2 Cooperating with the customers all over the world and knowing the markets very well.
3 CHINAMFG is a listed company. Everything can be rest assured working with us.
4 After- Services will be highly-satisfied. Any problems and feedbacks will be answered in a short of time. /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Impact of Elastomer Element Design on Rubber Coupling Performance

The design of the elastomer elements in a rubber coupling plays a critical role in determining its overall performance and capabilities. The elastomer elements are the heart of the coupling, responsible for transmitting torque, absorbing vibrations, and accommodating misalignments. The following aspects of elastomer element design significantly impact the coupling’s performance:

• Elastomer Material: The choice of elastomer material influences the coupling’s flexibility, damping characteristics, and resistance to wear. Different elastomers offer varying levels of resilience, chemical resistance, and temperature tolerance. Common elastomers used include natural rubber, synthetic rubber compounds, and polyurethane.
• Elastomer Hardness (Durometer): The durometer hardness of the elastomer affects its flexibility and ability to absorb vibrations. Softer elastomers have higher damping capabilities but may offer less torsional stiffness. Harder elastomers provide better torque transmission but may have reduced vibration isolation.
• Elastomer Shape and Geometry: The shape and geometry of the elastomer elements influence their flexibility and deformation characteristics. Different designs, such as cylindrical, star-shaped, or spider-shaped elements, affect the coupling’s ability to accommodate misalignments and transmit torque smoothly.
• Elastomer Bonding: The way the elastomer is bonded to the coupling’s hubs or inserts impacts the coupling’s overall durability and reliability. Proper bonding ensures that the elastomer effectively transfers torque and maintains its properties over time.
• Elastomer Properties Over Temperature: Elastomers can exhibit changes in performance with temperature fluctuations. Understanding how the chosen elastomer material behaves at different temperatures is essential for applications with varying operating conditions.

The design of the elastomer elements is a delicate balance between providing flexibility for vibration isolation and misalignment compensation while ensuring adequate torque transmission and overall coupling stiffness. Engineers must carefully select elastomer materials and design features based on the specific requirements of the application to achieve optimal coupling performance.

Signs of Wear or Deterioration in Rubber Couplings

Rubber couplings can show signs of wear and deterioration over time due to factors like torque, temperature, and environmental conditions. To identify potential issues, watch out for the following signs:

• Visible Cracks or Damage: Inspect the rubber element for visible cracks, tears, or physical damage. Such issues can weaken the coupling’s torque transmission and vibration damping capabilities.
• Reduced Flexibility: Stiff or less flexible rubber indicates material degradation, which can impact the coupling’s ability to accommodate misalignment and absorb vibrations.
• Increased Vibrations: Excessive machinery vibrations may suggest worn-out rubber couplings. Deterioration of the rubber diminishes its vibration dampening properties.
• Unusual Noises: Any unusual sounds like squeaking or knocking might point to improper rubber coupling function and the need for inspection.
• Altered Performance: Decline in machinery performance, such as reduced torque transmission or higher energy consumption, can indicate coupling wear.

Regular inspections, visual checks, vibration analysis, and performance monitoring can help detect wear and deterioration early. This enables timely replacement and avoids operational problems.

Role of Rubber Flexibility in Accommodating Misalignment

Rubber couplings are designed with a flexible element, usually made of elastomers, that plays a crucial role in accommodating misalignment between connected shafts. The flexibility of the rubber element allows it to deform and absorb angular, axial, and radial misalignments, providing several benefits:

1. Angular Misalignment: When the input and output shafts are not perfectly aligned in terms of angle, the rubber element can flex and twist, allowing the coupling to transmit torque even when the axes are not parallel.

2. Axial Misalignment: Axial misalignment occurs when the shafts move closer together or farther apart along their axis. The rubber element can compress or extend, adjusting the distance between the shafts without hindering torque transfer.

3. Radial Misalignment: Radial misalignment refers to the offset between the centers of the shafts. The rubber element can bend in response to radial displacement, ensuring that the coupling remains operational while accommodating the offset.

This flexibility not only enables the rubber coupling to handle misalignment but also helps prevent excessive stress on the connected machinery. By absorbing shock loads and distributing forces, the rubber element reduces wear and tear on components and minimizes the risk of premature failure.

In essence, the rubber’s flexibility in the coupling acts as a buffer against misalignment-induced stresses, contributing to smoother operation, improved longevity, and reduced maintenance in mechanical systems.

editor by CX 2024-02-16