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RV281 역류방지밸브(back flow preventer)
Controllable anti-pollution check valve EA type with union connectors
제품안내 Product Characteristic
Check valves of this type are for use as an independent means of preventing reverse water flow and for installing directly after a water meter on central water supply systems.They can also be used for industrial, commercial and similar systems where back pressure, back flow and back syphonage must be prevented.The classicfications of appliances to meet these requirements are specified in EN 1717.


• DIN/DVGW-approved.
• Universal application.
• Suitable for installation in any position.
• Create no shock pressure loadings.
• Union connectors simplify service.
• Fully approved for noise level protection to class 1.
• Meets KTW recommendations for potable water.
• Low pressure loss
Product Specifications
Application Controllable anti-pollution check valve EA type with union connectors
Media water,compressed air,petroleum,medium and light fuel oils,kerosene,gasoline with less than 15% aromatic content
Port connection type thread
DN size DN15-DN25
Max. media temperature 75°C
Static pressure 16bar
Body material brass
Approvals DIN/DVGW

주식회사 영 광 건 업 . 대표이사 강 성 도
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