| Media: | Water |
|---|---|
| Temperature: | Ordinary Temperature |
| Material: | Stainless Steel |
| Connection Form: | Clamp |
| Structure: | Swing |
| Pressure: | Ordinary Temperature |
| Samples: |
|---|
| Customization: |
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Products Description
H74W wafer check valve is a type of valve. Due to the composition of the valve body, disc, cover, etc., the disc opens under hydraulic pressure and is limited to the boss of the cover. Fluid passes through the outer edge of the disc. When the outlet pressure is greater than the inlet pressure, the disc closes under the action of hydraulic pressure and spring force to stop the flow back.
The function of this type of valve is to only allow medium to flow in one direction and prevent flow in the opposite direction. Usually, this type of valve operates automatically, and under the pressure of fluid flowing in one direction, the valve disc opens; When the fluid flows in the opposite direction, the valve seat is cut off by the fluid pressure and the self closing of the valve disc, which acts on the valve seat.
Among them, stainless steel wafer check valves belong to this type of valve, which includes swing check valves and lift check valves. The swing check valve has a hinge mechanism and a valve disc that is like a door and freely rests on the tilted valve seat surface.
In order to ensure that the valve disc can reach the appropriate position on the valve seat surface every time, the valve disc is designed in a hinge mechanism, so that the valve disc has sufficient swing space and truly and comprehensively contacts the valve seat. The valve disc can be made entirely of metal, or it can be embedded with leather, rubber, or a synthetic cover on the metal, depending on the performance requirements.
When the swing check valve is fully open, the fluid pressure is almost unobstructed, so the pressure drop through the valve is relatively small. The disc seat of the lift check valve is located on the sealing surface of the valve seat on the valve body. Except for the free lifting and lowering of the valve disc, the rest of this valve is like a globe valve. Fluid pressure lifts the valve disc from the sealing surface of the valve seat, and the medium backflow causes the valve disc to fall back onto the valve seat, cutting off flow.
According to the usage conditions, the valve disc can be an all metal structure, or it can be in the form of embedded rubber pads or rings on the valve disc holder. Like globe valves, the passage of fluid through lift check valves is also narrow, so the pressure drop through lift check valves is greater than that of swing check valves, and the flow rate of swing check valves is limited very little.
| name | description |
| material quality | stainless steel |
| pressure | 0.6mpa~2.5mpa |
| caliber | DN25~DN200 |
| temperature | -29°C ~425°C |
| medium | water ,oil |
| Connection method | |
| Driving method | automatic |
Certifications
| Delivery Time | 15~30 Days |
| Package | Standard Exporting Plywood Case |
| Shipping Port | Ningbo/Shanghai, China |
| Shipping Terms | EXW, FOB, CFR, CIF, etc. |
| Payment Terms | T/T, Western Union, PayPal, etc. 30% prepayment, 70% balance paid before shipping or against copy of BL |
| Advantage | OEM/ODM is applicable;Our own casting room |
| Others | We also manufacture Flange Ball Valve, Gate Valve, Globe Valve, Check Valve, Butterfly Valve & Y Strainer |
FAQ
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