3-Way & 2-Chamber Control Valves

3-Way & 2-Chamber Control Valves

The BDV series back-flushing control valves are advanced 3-way and 2-chamber hydraulic drive diaphragm control valves designed for low-pressure sealing and smooth flow transitions. These valves can be integrated with gravel or disc filters to create an automatic backwash filtration system. They also allow the redirection of water flow in supply systems. The dual control chamber design enables the valve to switch between angular or straight flow configurations based on spring assembly orientation. The unique cavity design ensures a high volume of water flow, making it ideal for various applications.

Typical Applications

Automatic Back-Flushing Filtration System:

The BSV series back-flushing control valves are used to build fully automated backwash systems when paired with gravel or disc filters. This helps maintain clean water by automatically removing debris from the filter media.

Water Supply Systems:

These valves are widely used in water supply pipelines to reroute the flow into either straight or angular directions, depending on the system’s needs.

Key Features

1. Hydraulic-driven diaphragm control valve for efficient operation;

2. Unique plastic spool assembly with tight sealing and excellent corrosion resistance;

3. Short stroke design that stabilizes water flow and prevents mixing of clean and dirty water;

4. Corrosion-proof and durable PP material for long-term use;

5. Easy-to-dismantle drive system for convenient maintenance and inspection on production lines;

6. Dual-chamber design with low-voltage drive to protect the diaphragm and ensure reliable performance;

7. Dual-chamber configuration allows for both angular and straight flow options, eliminating installation direction restrictions;

8. Unique cavity design ensures high flow capacity for optimal water delivery;

9. Optional changeover joints in the drain port allow for flow adjustments (from 4 to 3, or 3 to 2), meeting small flow requirements.

Specifications:

Dimensions:

How It Works?

Let's take a direct flow control valve as an example:

During normal filtration, the inlet and outlet are connected, allowing water to flow straight through. When pressurized water [1] enters the diaphragm control chamber [2], the diaphragm [3] drives the spool assembly [4] upward to the upper valve seat [5]. This seals the inlet and connects the sewage outlet, initiating the backwashing phase. Once the pressure in the control chamber is released, the water pressure in the pipeline and the spring force push the spool assembly [6] back down to the lower seat [7]. The sewage outlet is then sealed, and the valve returns to the filtration mode.

About BALDR Technology Co., Ltd.

Founded in October 2012, BALDR Technology is located in Fuzhou, China. As a professional manufacturer of environmental equipment, we specialize in water treatment, filtration systems, and air deodorization solutions. Our products are widely used in agricultural irrigation, urban landscape irrigation, golf course systems, industrial water recycling, and municipal air deodorization projects.

With over 300 employees, we have 1,500 m² of office space, a 500 m² R&D center, and a 300 m² showroom. Our modern industrial plant covers 10,000 m², featuring molding, plastic injection, metal stamping, electronic assembly, and production lines.

 

Contact Us:

Ivory Zhang | Sales Engineer

BALDR TECHNOLOGY CO., LTD

Website: www.baldr.com.cn

Mobile: +86 15012918283

Tel: +86-591-28307925

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