Products Description
Specifications
Closure Element: A flexible rubber or elastomer disc that bends or flexes to open and close.
Operation:
When fluid flows in the forward direction, pressure lifts or flexes the disc away from the seat.
When flow stops or reverses, the flexible disc returns to the seat, sealing off backflow.
Construction Materials:
Body: Cast iron, ductile iron, stainless steel, or PVC.
Disc: EPDM, NBR, neoprene, or other elastomers for flexibility and sealing.
Connection Types: Flanged, wafer, or lug type.
Products Parameters
|
Model Number |
Flange Size |
W.Pressure |
Valve Type |
Color |
|
H44X-16Q-50 |
2" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
|
H44X-16Q-65 |
2.5" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
|
H44X-16Q-80 |
3" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
|
H44X-16Q-100 |
4" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
|
H44X-16Q-125 |
5" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
|
H44X-16Q-150 |
6" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
|
H44X-16Q-200 |
8" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
|
H44X-16Q-250 |
10" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
|
H44X-16Q-300 |
12" |
1.0/1.6Mpa |
Flexible Disc |
Red/Blue |
FAQ
Q: What is a flexible disc check valve?
A flexible disc check valve is a type of non-return valve that uses a flexible rubber or elastomeric disc as the sealing element. The disc flexes to allow forward flow and automatically returns to the closed position to prevent backflow.
Q: How does it work?
When fluid flows in the forward direction, the pressure lifts and bends the flexible disc, allowing passage. When flow stops or reverses, the disc flexes back into place, sealing against the valve seat to prevent reverse flow.
Q: What are the advantages of a flexible disc check valve?
Low cracking pressure for easy opening
Quiet operation with minimal water hammer
Simple design with few moving parts
Corrosion-resistant materials for longer service life
Low maintenance requirements
Q: What materials are commonly used for the disc?
The disc is usually made of rubber compounds such as EPDM, NBR (nitrile), or neoprene, depending on the fluid type and operating temperature.
Q: Where are flexible disc check valves typically used?
They are widely used in:
Water and wastewater treatment systems
Irrigation pipelines
Pump discharge lines
Industrial fluid handling
HVAC systems