What Is a Non Slam Disc Check Valve?

When it comes to industrial systems and operations, ensuring efficient and smooth flow control is critical. Non slam disc check valves play a crucial role in maintaining flow in one direction while preventing backflow. For industries relying on fluid systems, understanding specialized equipment like non slam disc check valves is vital for optimizing performance and reducing wear and tear.

We will cover what non slam disc check valves are, how they work, and their various types and applications. We’ll also explore related components like wafer type valves, swing check valves, and dimensions, with insights from Concorde Valves and Automations.

A non slam disc check valve is designed to prevent the issue of water hammer, a phenomenon caused by the sudden closure of a valve that creates a pressure surge, often resulting in damage to the piping system. These valves use a disc to control the flow of fluid and ensure a quick yet smooth closure to eliminate backflow and minimize the risk of hydraulic shock.

The key reason they are referred to as “non slam” check valves is their ability to close gradually, using spring-loaded mechanisms that immediately react as flow ceases. This advanced functionality prevents the loud slamming noise typically caused when a conventional valve suddenly shuts due to backflow.

Key Features and Benefits of Non Slam Disc Check Valves

• Reduced Water Hammer: The gradual closure eliminates pressure surges.
• Compact Design: Wafer-type construction saves space in piping systems.
• Compatibility: These valves can be used across various industries, including water treatment, oil & gas, and power generation.
• Durability: Made with robust materials, extending the valve’s lifespan.
• Low Maintenance: Due to less wear and tear, the maintenance needs are minimal.

How a Non Slam Disc Check Valve Works

Non slam disc check valves operate using a spring mechanism and a disc. Here’s a breakdown of their working principle:

1. Normal Flow: When fluid flows in the intended direction, the pressure pushes the disc away from the seat, allowing the fluid to pass.
2. Backflow Prevention: If the flow reverses, the spring mechanism quickly moves the disc back into its seat, blocking backflow.
3. Non Slam Functionality: The spring mechanism ensures that the closure happens smoothly without slamming shut, thus avoiding water hammer.

By ensuring a steady and controlled closing process, non slam disc check valves significantly enhance the safety and efficiency of a system.

Non Slam Check Valve Designs and Types

Non slam disc check valves come in various designs to suit diverse applications. Below are a few common types:

Wafer Type Non Slam Check Valves

Wafer-type non slam check valves are highly compact and designed to fit snugly between flanges. Their minimal footprint makes them ideal choices for systems where space is limited.

• Features:
• Lightweight and compact
• Easy installation
• Suitable for tight spaces
• Applications:
  • HVAC systems
  • Water distribution networks
  • Industrial piping systems

Swing Check Valves 

Although swing check valves are broadly used, they differ significantly from non slam disc check valves. Swing check valves use a hinged flap instead of a spring-loaded disc. While effective for preventing backflow, swing check valves are more prone to water hammer due to their lack of controlled closure mechanisms.

• Key Difference:

While swing check valves are cost-effective and suitable for low-flow systems, they do not offer the non slam functionality essential for high-pressure applications.

Disc Check Valves 

Disc check valves are often referred to under the same category as non slam disc check valves. However, they serve the same purpose of preventing backflow using a spring-loaded disc. What makes them distinct is their versatile size range and configurations.

• Wafer Configurations:

Disc check valves are available in wafer-style designs, making them incredibly versatile for different applications and easy retrofitting.

Dimensions and Diagrams for Non Slam Disc Check Valves

Understanding dimensions is crucial for ensuring compatibility with your existing piping system. Non slam disc check valves come in a variety of sizes to cater to diverse requirements.

Common Dimensions

• Sizes range from 2 inches to 24 inches for wafer-type non slam disc check valves.
• Pressure Ratings can span from PN10 to PN40, depending on the application.
• Face-to-Face Dimensions align with international standards for wafer-style valves.

Diagrams for Reference

Non slam disc check valve diagrams generally showcase the internal layout of the components, including:

• Disc
• Spring mechanism
• Seat ring
• Valve body

These diagrams are helpful for maintenance professionals and engineers when installing or repairing the valves.

Non Slam Check Valve Catalog and Animation Features

To better understand the product, Concorde Valves and Automations offers detailed catalogs explaining each valve variant and its specifications. Additionally, animations are available, visually demonstrating the working principle behind non slam disc check valves. These resources make it easier for engineers to grasp the unique features of each type of valve and how they operate within systems.

Choosing the Right Valve for Your System

When deciding on a non slam disc check valve, consider the following factors to ensure you make the right choice:

• Application Details: Choose based on the industry (e.g., oil & gas, wastewater, industrial processing) and flow requirements.
• Size and Dimensions: Ensure the valve is compatible with your system specifications.
• Material: The valve material (e.g., stainless steel, cast iron) must withstand the operating conditions, such as high temperature or corrosive fluids.
• Pressure Rating: Confirm the valve will tolerate the pressure parameters for your application.

For expert guidance, the Concorde Valves and Automations team is here to assist you with tailored advice.

Improve Efficiency with Concorde Valves and Automations

Non slam disc check valves are essential for any system requiring backflow prevention while maintaining operational efficiency and reliability. Their ability to eliminate water hammer, coupled with compact designs, makes them the preferred choice for a wide range of industries.

At Concorde Valves and Automations, we provide a comprehensive range of non slam disc check valves designed to cater to diverse applications and challenges. Reach out to our team today to explore our product catalog and find the perfect valve solution for your needs.