1. Product introduction
**Types of Flanged Check Valves:**
1. **Swing Check Valves:**
- Characterized by a disc that pivots around the valve's center of gravity.
- Ideal for large diameters with steady, non-pulsating flows due to their streamlined channel design and low resistance.
- Not recommended for applications with pulsating flows and may not seal as effectively as lift check valves.
2. **Lift Check Valves:**
- The disc moves vertically along the valve's centerline, providing a positive shut-off.
- Suitable for a variety of applications, including those with high pressure and small diameters, where a ball or threaded disc may be used.
- Offer better sealing performance than swing check valves.
3. **Butterfly Check Valves:**
- Combine features of both swing and lift valves, with a disc that rotates on a pin within the seat.
- Available in single, double, and half configurations to reduce hydraulic impact and prevent flow stoppages.
- Have a higher flow resistance compared to swing check valves due to their globe valve-like structure.
4. **Pipeline Check Valves:**
- A newer design, compact and lightweight, with advanced manufacturing techniques.
- While they offer several advantages, their flow resistance is slightly higher than that of swing check valves.
5. **Pressure Check Valves:**
- Specifically designed for boiler feed water and steam applications.
- Integrate the functions of a lift check valve with those of a globe or angle valve.
**III. Installation and Application Considerations:**
- Flanged check valves are typically installed in horizontal pipelines for optimal performance.
- Certain types, such as bottom, spring-loaded, and Y-type check valves, may not be suitable for pump outlet installations due to their specific design and function.
**IV. Working Principle:**
- The valve disc is pushed open by the forward flow of the medium, allowing flow in the desired direction.
- In the event of backflow, the disc is closed by its own weight and the逆流介质的反向力, creating a seal against the valve seat and preventing unwanted reverse flow.
Name | Product model | Nominal diameter | Body material | Applicable medium | Application field |
Cast steel swing check valve | H44H-16/64C | DN15-DN500 | Cast steel WCB | Water, gas, oil | Water treatment, petrochemical, food and medicine, power energy, metallurgy, etc |
Note: The configuration of each part of this product is optional, please consult us for details, explain your specifications and requirements.
The above information is for reference only, Zhejiang Tieyong Machinery Manufacturing Co., Ltd. reserves the right to update the design, if you have any questions, please consult customer service.
2 Product Advantages
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Valve body The body is precision casting body, fine without trachoma. |
Material All carbon steel materials are tested, with material list. |
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Appearance After the appearance of processing 2 times shot blasting, beautiful appearance. |
Valve seat CR system + surfacing 507 molybdenum, increase the wear resistance of the seat. |
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3.Technical parameter
Form | Swing type | Disc number | Single lobe swing type | Driving mode | other |
Disc form | Monopetalous structure | Mode of action | non-return | Structural form | Swing type |
Valve action | check | Mode of action | Single action | Type (channel location) | Straight-through type |
Functional role | Non-return type | Lining material | Stainless steel | Sealing material |
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Sealing mode | Hard seal | Pressure environment | Atmospheric pressure | Temperature environment | Normal temperature |
Flow direction | unidirectional | Accessories available | Francois | Applicable industry | Chemical, environmental protection water treatment |
Applicable medium | Weak acid-base medium |
4. Quality inspection equipment
Complete testing equipment to ensure product quality.
5.Packaging & Shipping
6. FAQ
1. What is the Minimum Order Quantity?
5~1000 pcs.And we also accpet sample orders.
2. Can you manufacture according to customer's samples?
According to samples, we can make drawing, tooling and sample
3.How long will it take to make new samples according to customer's drawing or sample?
Totally 20 days. 10 days for tooling and another 10 days for sample.
