Product Overview

It is used between the supply water and return water of the air conditioning system to maintain the pressure difference between them, thereby improving the system utilization rate. Maintaining a precise and constant pressure difference can reduce system noise and prevent equipment damage caused by excessive pressure difference.

Main Features

• Maintains precise and stable pressure difference between supply and return water in HVAC systems.
• Enhances overall operational efficiency of the air conditioning system.
• Reduces system noise and prevents equipment damage from excessive pressure difference.
• Suitable for matching with 800X series piping configurations in HVAC applications.

Working Principle

1. When the supply-return water pressure difference exceeds the set value, the valve opens the bypass.

2. Part of supply water diverts to return water side to reduce pressure difference.

3.Once pressure difference returns to preset value, the valve resets to keep it stable.

Structural Features

• Compact design, easy to install in HVAC pipelines.
• Equipped with a pressure-sensitive spool for real-time adjustment.
• Built-in bypass channel to divert water flow efficiently.
• Durable sealing components to prevent water leakage.

Maintenance

• Check hydraulic oil level annually
• Test closing time every 6 months
• Inspect disc and seat for wear during system shutdowns
• Lubricate adjustment mechanism yearly
• Verify proper operation after system pressure changes