Assistant valve enterprise to win the world

Assistant valve enterprise to win the world
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Low resistance backflow preventer

Product specification

Size:DN50~300
Pressures:PN10~16
Material:Nodular Cast Iron, Carbon Steel, Stainless Steel
Temperature:-20~80℃
End Connection:Flange



Product feature

It is applicable to the effective isolation when the domestic and drinking water inlet pipes are cross connected, which can effectively prevent and isolate the backflow of unclean water from polluting the domestic and drinking water, and the head loss is less than 0.03MPa. When backflow occurs (the outlet pressure is higher than the inlet pressure), the middle chamber is air isolated; Hydraulic control, meeting the hygiene and safety standards for aquatic products; Low failure rate and simple maintenance.

The air in the middle chamber is isolated, and the pressure in the middle chamber is zero when it returns.

The positive differential pressure of seal closing of inlet check valve is greater than 0.7m water column.

Positive differential pressure of sealing closing of outlet check valve, greater than 0.35m water column.

Flow resistance of the whole machine 0.03MPa.


Manufacturer

NINGBO YIJI VALVE MANUFACTURING CO., LTD

  • Add:189 shengyuan road, economic development zone, fenghua district, ningbo, zhejiang province, china
  • Tel:+86-574-5637 3576
  • Email:005@eg-valve.com
  • Warm Tips: If you need any more information, please send us mails at "prcvalve@163.com".