rubber flapper check valve Description
Rubber flapper check valve is a valve that uses an elastic rubber disc to control one-way flow. It consists of a valve body, a valve cover, and a rubber-coated disc. The disc adopts a steel frame + nitrile rubber composite structure, which has both support strength and sealing elasticity, and its service life can reach 1 million times.
Working Principle
Forward flow: The medium pressure pushes the rubber flap to rotate and open, and the full-bore design makes the flow channel unobstructed and the head loss is small.
Reverse flow: When the medium flows back, the rubber flap closes quickly under the action of gravity and reverse pressure to block the backflow, and can absorb the water hammer impact through elastic deformation.
Core characteristics
Low flow resistance: The full-bore design reduces the medium resistance and avoids the accumulation of foreign matter.
Silent opening and closing: The rubber material buffers the opening and closing impact and reduces noise.
Corrosion resistance: The valve body is made of ductile iron or corrosion-resistant alloy, which is suitable for complex working conditions such as sewage and chemical media.
Easy maintenance: The modular structure supports quick disassembly, and the rubber flap can be replaced separately.
rubber flapper check valve specification
|
item |
value |
|
Application |
General |
|
Port Size |
DN50-DN300 |
|
Warranty |
18MONTH |
|
Place of Origin |
China |
|
Henan |
|
|
Power |
Manual |
|
Temperature of Media |
Normal Temperature |
|
Brand Name |
GNEE |
|
Structure |
Check |
|
Media |
Water |
|
Customized support |
OEM, ODM, OBM |
|
Color |
Customized Color |
|
Weight |
Depends on specifications |
|
Body material |
SS, CI, DI, WCB |
|
Product name |
flapper type check valve |
rubber flapper check valve
Applicable scenarios and limitations
Applicable scenarios
Water supply and drainage system: Installed at the pump outlet or reservoir bypass pipe to prevent backflow and contamination of water sources.
Low viscosity media: clean water, sewage, fluids containing a small amount of particles (such as pulp).
Restrictions
Media restrictions: Not suitable for high viscosity liquids (such as oils) or high temperature (>80℃) environments.
Installation direction: Horizontal installation is required to ensure gravity reset function.
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