| Model： | ||
| Standard or Nonstandard： | Standard |
|
| Pressure： | LowPressure |
|
| Material： | Casting |
| PriceRange： | ||
| Structure： | Check |
|
| Temperature of Media： | NormalTemperature |
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The rubber check valve is one of the specific types of check valves. Or it can be further said that rubber check valve is another style of swing check valve. The rubber check valve is also regarded as the rubber flapper valve. As a result, the flapper is the feature of the rubber check valve, as well as the rubber sealing.
The performance of the shut off has been greatly improved comparing that of the conventional swing check valve. The seating arrangement in this valve and the flapper are the keys to its success.
The seat of the rubber check valve is on a 45 degree angle and therefore the flapper travels only 35 degrees to reach full open position. With this short stroke, the valve is capable of very fast shut off, before reverse flow can develop, and hence does not slam. And the flapper is specially designed to satisfy tight shut off at low pressures. The flapper is steel reinforced, but no metal is exposed to the media and the flow through area is not restricted. In fact, the area through this style valve is equal to or greater than the equivalent pipe size. This is accomplished by enlargement of the flow area immediately downstream of the flapper.
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