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Double Block and Bleed Valve

Double Block and Bleed Valve

Our Double-Link Ball Valve is an ingeniously engineered fluid control solution that seamlessly integrates two independent three-way (L-Port or T-Port) ball valves into a single, compact unit, operated by one common actuator. This innovative linkage system ensures that both valves turn synchronously with a single handle movement, providing precise and reliable flow path switching across two different pipeline sections simultaneously. It eliminates the need for separate actuators and complex control linkages, offering a simplified, cost-effective, and space-saving solution for applications requiring synchronized diversion or mixing of fluids, such as in water treatment, chemical dosing, irrigation systems, and industrial process equipment.
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Product Features & Competitive Advantages

 

1

Synchronized Control with Single-Action Operation: The core advantage of this valve is its ability to control two flow paths with one simple 90-degree or 180-degree turn. The linked actuator guarantees that both three-way balls move in perfect unison, ensuring process consistency and eliminating the risk of operator error associated with manipulating two separate valves.

 

2

Space-Saving Integrated Design: By combining two three-way valves and their actuation into a single assembly, we drastically reduce the installation footprint, weight, and number of connections required. This leads to a cleaner, more compact piping layout, easier maintenance access, and lower overall project costs.

 

3

Enhanced Reliability & Reduced Leak Points: The unified body construction minimizes potential leak paths by reducing the number of gaskets and external connections found in a two-valve setup. This robust design enhances system integrity and lowers long-term maintenance needs.

4

Flexible Flow Path Configuration: Depending on your process requirements, the integrated three-way valves can be specified as L-Port (for flow diversion between two outlets) or T-Port (for flow mixing or splitting). This flexibility allows the assembly to be tailored for a wide range of complex flow control tasks.

 

5

Durable Construction for Demanding Environments: Manufactured from high-quality materials such as CF8 (304SS) or CF8M (316SS) and equipped with PTFE seats, the valve ensures excellent corrosion resistance, bubble-tight sealing, and a long operational lifespan even with frequent cycling.

 

Typical Specifications

 

Configuration: Two linked 3-Way Ball Valves (L-Port or T-Port)

Operation: Manual Lever Actuation (Common Shaft)

Port Connection: NPT, BSP, or Flanged

Size Range: DN15 - DN50 (½" - 2")

Body Material: Stainless Steel 304/316, Brass

Seat Seal: PTFE, RPTFE

Pressure Rating: Up to 10 Bar (150 PSI)

 

Our Service and Support

 

 

◎Technical Consultation: We assist in selecting the correct port configuration (L or T) and linkage setup to meet your specific process flow diagram.

◎Comprehensive Documentation: Detailed installation guides and dimensional drawings are provided for easy integration into your system.

◎Spare Parts Availability: We stock common spare parts, including seal kits and replacement handles, to ensure minimal downtime.

 

FAQ

 

Q:What is the main purpose of linking two three-way ball valves together?

A: The primary purpose is to synchronize the control of two separate flow paths with a single action. This is essential in applications where you need to switch the flow direction or source for two lines simultaneously, ensuring process coordination, saving time, and improving operational safety.

Q: Can I choose different port types for the two integrated valves?

A: Typically, the two valves are identical in port type (both L-Port or both T-Port) to maintain synchronized function. However, we can discuss custom configurations based on your specific process logic. Please contact our technical team with your requirements.

Q: How does this product differ from a single 5-way or 6-way ball valve?

A: While a single multi-port valve can be complex and custom-made, our Double-Link Ball Valve offers a more standardized and cost-effective modular approach. It provides similar functionality for controlling multiple flow paths but with greater flexibility in configuration and often easier maintenance.

Q: Is the linkage mechanism robust enough for frequent operation?

A: Yes. The linkage system is engineered from durable materials and is designed for high-cycle applications. It ensures precise alignment and smooth operation of both ball valves over a long service life.

Q: What applications is this valve most suitable for?

A: It is ideal for any application requiring synchronized flow switching. Common uses include:

Switching between two different fluid sources for a single outlet.

Directing the flow from one source to two different destinations at the same time.

Simple mixing systems in water treatment, chemical processing, and irrigation control.

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