Pros and Cons of Resilient Seated Gate Valves - Bosseal

Resilient seated gate valves, also known as soft seal gate valves, are pivotal sealing components within the engineering domain, serving an irreplaceable function. Employing state-of-the-art materials and design principles, they offer a plethora of advantages alongside certain limitations. This article aims to meticulously dissect the strengths and weaknesses of
 

Advantages of Resilient Seated Gate Valves

 
Resilient seated gate valves offer several advantages due to their innovative design and use of advanced materials. Let's delve into the advantages of resilient seated gate valves.
 

1. Cost-effectiveness

Resilient seated gate valves predominantly utilize ductile cast iron material, which renders them more cost-effective compared to counterparts crafted from cast steel or stainless steel. This cost advantage is particularly beneficial for projects requiring bulk procurement. Despite the economical aspect, the quality remains uncompromised.
 
2. Superior sealing performance

Resilient seated gate valves are characterized by a cavity-free structure, with epoxy resin coating applied to both the inner and outer surfaces of the valve body and cover. The gate surface is enveloped in rubber, while "O"-ring seals are employed at the valve stem sealing point, ensuring robust sealing capabilities. This design ensures exceptional sealing efficacy, making them especially suitable for waterworks and non-corrosive media.
 
3. Convenient maintenance

The straightforward and intelligible construction design of resilient seated gate valves facilitates easy disassembly and installation. Acknowledging the potential loss of rubber elasticity due to frequent operation, the structural configuration of these valves enables the gate to be easily replaced without necessitating the dismantling of the entire valve, thus saving on maintenance time and resources.

Link to Yaxing Valve

 

Disadvantages of Resilient Seated Gate Valves

 
Resilient seated gate valves, despite their numerous advantages, also come with some disadvantages that should be taken into consideration.
 

• Temperature and media limitations: The rubber gate of resilient seated gate valves cannot endure continuous operation in temperatures surpassing 80 degrees Celsius or with media containing hard particles or corrosive substances. Such conditions may result in gate deformation, damage, or corrosion, ultimately leading to pipeline leakage. Consequently, these valves are exclusively suitable for media devoid of corrosion, particles, or abrasion.

• Restricted applicability: Owing to the constraints posed by media and temperature, the applicability of resilient seated gate valves is relatively constrained. In certain specialized engineering contexts, alternative valve types may be necessary to fulfill specific requirements.

 
Resilient seated gate valves have garnered widespread adoption within engineering circles owing to their cost-effectiveness, exceptional sealing performance, and hassle-free maintenance attributes. However, they still exhibit certain limitations under specific conditions. With continuous advancements in materials and technology, it is anticipated that resilient seated gate valves will undergo further enhancements in both applicability and performance, thereby furnishing the engineering realm with more dependable and efficient sealing solutions.
 
 

, also known as, are pivotal sealing components within the engineering domain, serving an irreplaceable function. Employing state-of-the-art materials and design principles, they offer a plethora of advantages alongside certain limitations. This article aims to meticulously dissect the strengths and weaknesses of resilient seated gate valves to provide a comprehensive understanding of their utility and constraints.Resilient seated gate valves offer several advantages due to their innovative design and use of advanced materials. Let's delve into the advantages of resilient seated gate valves.Resilient seated gate valves, despite their numerous advantages, also come with some disadvantages that should be taken into consideration.Resilient seated gate valves have garnered widespread adoption within engineering circles owing to their cost-effectiveness, exceptional sealing performance, and hassle-free maintenance attributes. However, they still exhibit certain limitations under specific conditions. With continuous advancements in materials and technology, it is anticipated that resilient seated gate valves will undergo further enhancements in both applicability and performance, thereby furnishing the engineering realm with more dependable and efficient sealing solutions.

Figure 1 - resilient seated gate valve (smooth base on valve bore)
Figure 2 &#; metal seated gate valve (sump at base of valve bore)

Brief history and current status of metal vs resilient seated gate valves.

Before the resilient seated gate valve was introduced to the market (circa &#;s), gate valves with a metal seated design were most commonly used for all sizes. Since then, resilient seated gate valves have become, by far, the most common choice for water and wastewater applications for sizes up to and including pipework diameters of 600mm. Metal seated gate valves are still more commonly used for valve sizes of DN700 and above.

However, with advances and improvements in manufacturing processes and equipment, resilient seated gate valves are readily available from AVK in sizes up to and including DN, and this will be increased further to DN in the near future.

As you would expect from AVK, these larger resilient seated gate valves are designed, tested and manufactured in full accordance with the relevant standards (BS EN-1 & 2, BS EN558, BS EN-2 & BS EN-1) and are suitable for drinking water applications being manufactured from WRAS approved materials.

This downloadable report (click on the link - no login required) describes the various advantages of using resilient seated gate valves compared to the metal seated equivalent and shows that the following important benefits can be achieved:

&#; Leakage reduction

&#; Increase system efficiency

If you want to learn more, please visit our website Resilient Seated Gate Valves Manufacturer.

&#; Reduced operating torque and input effort

&#; Reduced costs for gearboxes and electrical actuators

&#; Reduces power consumption for valve operation

&#; Increased flexibility for valve installation

There is a legacy of using metal seated gate valves for water and wastewater applications on sizes above DN600.  However, resilient seated gate valves are now readily available from AVK in sizes up to and including DN (see Figure 5) and this size range will increase even further in the near future.

AVK offer a full range of resilient seated gate valves from DN50 to DN and also offer metal seated gate valves from DN50 to DN. A wide range of options are also available.

We would welcome the opportunity to discuss your gate valve requirements, please contact AVK UK directly on the link above and we will connect you with the technical specialist best suited to your project or installation.

Note: This paper was authored by Greg Morris, AVK UK Technical Manager, our specialist in valves for Dams, Reservoirs and Hydropower.

 

For more information, please visit sluice valve manufacturer.