Anti-pollution non-return valve HONEYWELL - 1 1/2" (40 mm)
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Description
Parameters
- Connection size: 1 1/2" (internal thread)
- Medium: water
- Working pressure: max. 25 bar
- Weight: kg
- Working temperature: up to 70 °C
Properties
- tightness at 3 cm backflow water column
- DVGW approvals for valve insert
- easy installation
- versatile application
- any installation position
- does not cause hydraulic shock
- reliable, tested
- causes low pressure loss
Construction
- housing
- valve insert with DVGW certificate
- caps
Materials
- housing: brass
- valve insert: high-grade synthetic material
- cap: high-grade synthetic material
- ring seal: NBR
Application
The anti-contamination check valve EA-RV284 is used as an EA class protection according to PN-EN 1717 against backflow. It is installed in drinking water installations in places exposed to contact with fluid classified as category 2. It can be used as main protection on the connection of the installation to the water supply network, installed directly behind the water meter.
Operating Principle
The anti-contamination check valve has a movable sealing mushroom which is pushed away from the seat closer or further depending on the flow rate. When the flow drops to zero, the spring moves the mushroom to the seat causing sealing and preventing backflow. The valve tightness, in accordance with the guidelines in the standards, is ensured at 3 cm backflow water column.
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