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Advantages of Forged Axial Flow Check Valves
A forged axial flow check valve is a type of check valve that combines the advantages of "forged valve body material" and "axial flow structure". Its core function is to prevent the reverse flow of medium in pipelines, and its advantages are mainly reflected in four dimensions: structural stability, flow performance, sealing reliability, and wide applicability of scenarios, which can be broken down into the following points:
A. Core Advantages of Forged Material: High Strength and Risk Resistance
The valve body of the check valve is processed by the "forging process" (instead of casting). The internal structure of the material is denser, without casting defects such as sand holes or air holes, which fundamentally improves the structural strength of the valve and its ability to withstand harsh working conditions:
1.Ultra-high Pressure Resistance and Impact Resistance
Forged materials (such as forged steel and forged stainless steel) have much higher tensile strength and yield strength than castings. They can withstand high pressure (up to ultra-high pressure levels, e.g., above 100MPa), frequent pressure fluctuations, or instantaneous impacts. They are suitable for high-pressure working conditions such as petrochemical engineering, high-pressure pipelines, and power stations, and are less prone to risks such as valve body cracking and deformation.
2.
Excellent Corrosion Resistance and Temperature Resistance
Corrosion-resistant forged materials (such as 316L forged stainless steel and duplex steel forgings) or high-temperature-resistant forged materials (such as chrome-molybdenum steel forgings) can be selected. They can adapt to harsh environments such as acidic and alkaline media (e.g., chemical sewage, corrosive solvents) and high-temperature media (e.g., steam, hot oil), prevent the erosion of the valve body by the medium, and extend the service life.
3.High Dimensional Accuracy and Strong Assembly Sealing
The forging process has high processing accuracy, so the fit tolerance between the valve body, valve cover, and valve core is smaller. After assembly, the components fit more closely, reducing medium leakage caused by "excessive fit clearance". Especially in low-pressure or vacuum working conditions, the sealing stability is better than that of cast valve bodies.
B. Core Advantages of Axial Flow Structure: Low Resistance and Efficient Flow
The design of the valve core and valve seat of the axial flow structure is consistent with the flow direction of the pipeline medium (呈 "axial direction"), which is different from the "radial" blocking structure of traditional swing check valves and lift check valves. It has significant advantages in flow performance:
1.Extremely Low Flow Resistance and Lower Energy Consumption
The axial flow valve core (usually conical or streamlined) has a small blocking area for the medium. The flow channel is smooth without obvious "directional dead angles", so the pressure loss (pressure drop) when the medium flows through is much lower than that of swing check valves (the pressure drop can be reduced by 30%-50%). For pipelines that require low-energy transportation (such as water supply and drainage, circulating water systems), it can reduce the load of power equipment such as pumps and fans, and lower the operating cost.
2.Fast Opening and Closing Response Speed, Low Water Hammer Risk
The axial flow valve core is light in weight and small in inertia. When the medium flow rate changes (e.g., pump start-stop, pipeline pressure fluctuation), the valve core can quickly fit or separate from the valve seat, effectively shortening the "lag time of medium reverse flow". Thus, it reduces the "water hammer effect" caused by the impact of reverse flow on the pipeline (especially in long-distance and high-flow-rate pipelines, water hammer may cause pipeline rupture).
3.High Installation Flexibility, Adaptable to Various Pipeline Layouts
The inlet and outlet flow channels of the axial flow structure are linear, and can be directly installed coaxially with the pipeline. Unlike swing check valves, there is no need to reserve a "valve core swing space". Therefore, it is suitable for scenarios with narrow space and dense pipelines (such as equipment rooms, integrated pipelines), and can be installed horizontally or vertically (with medium flowing upward), which has better adaptability than some check valve types that can only be installed horizontally.
C. Comprehensive Performance Advantages: Long Service Life and Low Maintenance Cost
1.Strong Sealing Reliability and Low Leakage Rate
The high-precision fit of the forged valve body and the "surface sealing" design of the axial flow valve core (large fitting area between the valve core and the valve seat) can achieve tighter sealing. Especially in high-pressure, toxic, and harmful medium pipelines, it can greatly reduce the risk of leakage and meet strict safety standards (such as API, ASME).
2.Low Wear and Long Service Life
The streamlined valve core reduces the scouring and wear of the valve core by the medium. Moreover, the forged material has strong fatigue resistance and can withstand long-term frequent opening and closing (e.g., frequent start-stop scenarios of pump outlet pipelines). Compared with ordinary cast iron or cast steel check valves, its service life can be extended by 2-3 times, reducing the frequency of valve replacement.
3.High Maintenance Convenience
Most forged axial flow check valves adopt a "flange connection" or "quick-dismantling structure". There is no need to dismantle the entire pipeline during disassembly; vulnerable parts such as the valve core and valve seat can be taken out separately for inspection, repair, or replacement. This reduces the downtime for maintenance and lowers the operation and maintenance cost.
D.Summary of Applicable Scenarios
Thanks to the above advantages, forged axial flow check valves are widely used in high-pressure/high-temperature working conditions, high-flow-rate pipelines, and fields with high requirements for energy consumption and safety, such as:
-Petrochemical industry: High-pressure oil and gas transmission pipelines, reactor outlets;
-Power industry: Power station steam pipelines, boiler feedwater pipelines;
-Water supply and drainage: Outlets of circulating water pumps in large water plants, long-distance water transmission pipelines;
-Industrial equipment: Compressor outlets, hydraulic system pipelines, etc.
In conclusion, the core value of forged axial flow check valves lies in the combination of "high-strength material + low-resistance and high-efficiency structure". They can not only cope with harsh working conditions but also improve the safety, energy efficiency, and stability of the pipeline system.
Except of the general function of check valve,the axial flow check valve has the advantagesof small noise and lower impact with the using of a spring.With the axial flowing structure,the valve has characteristic of small fluid resistance,great flow capacity,and small outer dimension which makes this valve a wonderful choice using on the outlet of pump in pipeline system transporting oil and gas.It is used on the pipeline transporting oil,gas,water and etc.For non-return demanding condition.
Zhejiang Naibang Valves Co.,Ltd.is a specialized manufacturer of wafer check valves, which integrates research, development, manufacture and marketing.The company is supported by sophistecated equipment with over 100 machine tools and numerical control processing equipment. There are over 180 employees,including 26 technical and 20 managerial personnel.We pride ourselves on powerful product designing and manufacturing experience and complete quality control and after-sale service system.
Based on the management philosophy relying on market, quality management and innovation,NAlBANG has introduced in the advances manufacturing technology of valves. Strictly designed and manufactured to the standards of GB, ANSI/APl, DIN, NF, BS and JlS etc.,our products mainly cover wafer single disc lift and swing check valves and wafer double disc swing check valves (H77,H76,H74,H72,H71,H46 and H44),nominal diameter between 1/2"~60"(DN15~1500mm),nominal pressure between 150LB~2500LB(1.0MPa~25.0MPa),main materials in eluding carbon steel, low temperature steel, dual phase steel(F51/F53),titanium alloy, aluminium bronze,INCONELSS304,SS304L,SS316,$S316L,chrome molly bdenum steel, Monel (400/500)20# alloy and Hastelloy, etc.Widely used in the heavy industries of petrol eumnatural gas, electric power, steel, chemical, metallurgy, paper making, heating military and shipping etc.,our products have been greatly recognized by customers from Europe, America and Southeast Asia for their sound stability dependability,ability and out standing service.
Adhering to the market guideline of 'higher honesty, diligence and speciality',people of. NAlBANG, on the basis of joint development and mutua benefit, will continue to supply all our cooperative friends with excellent products and considerate service. We welcome your presence here for negotiation andVcooperation,striving for common resplendence.
Advantages of Forged Axial Flow Check Valves
A forged axial flow check valve is a type of check valve that combines the advantages of "forged valve body material" and "axial flow structure". Its core function is to prevent the reverse flow of medium in pipelines, and its advantages are mainly reflected in four dimensions: structural stability, flow performance, sealing reliability, and wide applicability of scenarios, which can be broken down into the following points:
A. Core Advantages of Forged Material: High Strength and Risk Resistance
The valve body of the check valve is processed by the "forging process" (instead of casting). The internal structure of the material is denser, without casting defects such as sand holes or air holes, which fundamentally improves the structural strength of the valve and its ability to withstand harsh working conditions:
1.Ultra-high Pressure Resistance and Impact Resistance
Forged materials (such as forged steel and forged stainless steel) have much higher tensile strength and yield strength than castings. They can withstand high pressure (up to ultra-high pressure levels, e.g., above 100MPa), frequent pressure fluctuations, or instantaneous impacts. They are suitable for high-pressure working conditions such as petrochemical engineering, high-pressure pipelines, and power stations, and are less prone to risks such as valve body cracking and deformation.
2.
Excellent Corrosion Resistance and Temperature Resistance
Corrosion-resistant forged materials (such as 316L forged stainless steel and duplex steel forgings) or high-temperature-resistant forged materials (such as chrome-molybdenum steel forgings) can be selected. They can adapt to harsh environments such as acidic and alkaline media (e.g., chemical sewage, corrosive solvents) and high-temperature media (e.g., steam, hot oil), prevent the erosion of the valve body by the medium, and extend the service life.
3.High Dimensional Accuracy and Strong Assembly Sealing
The forging process has high processing accuracy, so the fit tolerance between the valve body, valve cover, and valve core is smaller. After assembly, the components fit more closely, reducing medium leakage caused by "excessive fit clearance". Especially in low-pressure or vacuum working conditions, the sealing stability is better than that of cast valve bodies.
B. Core Advantages of Axial Flow Structure: Low Resistance and Efficient Flow
The design of the valve core and valve seat of the axial flow structure is consistent with the flow direction of the pipeline medium (呈 "axial direction"), which is different from the "radial" blocking structure of traditional swing check valves and lift check valves. It has significant advantages in flow performance:
1.Extremely Low Flow Resistance and Lower Energy Consumption
The axial flow valve core (usually conical or streamlined) has a small blocking area for the medium. The flow channel is smooth without obvious "directional dead angles", so the pressure loss (pressure drop) when the medium flows through is much lower than that of swing check valves (the pressure drop can be reduced by 30%-50%). For pipelines that require low-energy transportation (such as water supply and drainage, circulating water systems), it can reduce the load of power equipment such as pumps and fans, and lower the operating cost.
2.Fast Opening and Closing Response Speed, Low Water Hammer Risk
The axial flow valve core is light in weight and small in inertia. When the medium flow rate changes (e.g., pump start-stop, pipeline pressure fluctuation), the valve core can quickly fit or separate from the valve seat, effectively shortening the "lag time of medium reverse flow". Thus, it reduces the "water hammer effect" caused by the impact of reverse flow on the pipeline (especially in long-distance and high-flow-rate pipelines, water hammer may cause pipeline rupture).
3.High Installation Flexibility, Adaptable to Various Pipeline Layouts
The inlet and outlet flow channels of the axial flow structure are linear, and can be directly installed coaxially with the pipeline. Unlike swing check valves, there is no need to reserve a "valve core swing space". Therefore, it is suitable for scenarios with narrow space and dense pipelines (such as equipment rooms, integrated pipelines), and can be installed horizontally or vertically (with medium flowing upward), which has better adaptability than some check valve types that can only be installed horizontally.
C. Comprehensive Performance Advantages: Long Service Life and Low Maintenance Cost
1.Strong Sealing Reliability and Low Leakage Rate
The high-precision fit of the forged valve body and the "surface sealing" design of the axial flow valve core (large fitting area between the valve core and the valve seat) can achieve tighter sealing. Especially in high-pressure, toxic, and harmful medium pipelines, it can greatly reduce the risk of leakage and meet strict safety standards (such as API, ASME).
2.Low Wear and Long Service Life
The streamlined valve core reduces the scouring and wear of the valve core by the medium. Moreover, the forged material has strong fatigue resistance and can withstand long-term frequent opening and closing (e.g., frequent start-stop scenarios of pump outlet pipelines). Compared with ordinary cast iron or cast steel check valves, its service life can be extended by 2-3 times, reducing the frequency of valve replacement.
3.High Maintenance Convenience
Most forged axial flow check valves adopt a "flange connection" or "quick-dismantling structure". There is no need to dismantle the entire pipeline during disassembly; vulnerable parts such as the valve core and valve seat can be taken out separately for inspection, repair, or replacement. This reduces the downtime for maintenance and lowers the operation and maintenance cost.
D.Summary of Applicable Scenarios
Thanks to the above advantages, forged axial flow check valves are widely used in high-pressure/high-temperature working conditions, high-flow-rate pipelines, and fields with high requirements for energy consumption and safety, such as:
-Petrochemical industry: High-pressure oil and gas transmission pipelines, reactor outlets;
-Power industry: Power station steam pipelines, boiler feedwater pipelines;
-Water supply and drainage: Outlets of circulating water pumps in large water plants, long-distance water transmission pipelines;
-Industrial equipment: Compressor outlets, hydraulic system pipelines, etc.
In conclusion, the core value of forged axial flow check valves lies in the combination of "high-strength material + low-resistance and high-efficiency structure". They can not only cope with harsh working conditions but also improve the safety, energy efficiency, and stability of the pipeline system.
Except of the general function of check valve,the axial flow check valve has the advantagesof small noise and lower impact with the using of a spring.With the axial flowing structure,the valve has characteristic of small fluid resistance,great flow capacity,and small outer dimension which makes this valve a wonderful choice using on the outlet of pump in pipeline system transporting oil and gas.It is used on the pipeline transporting oil,gas,water and etc.For non-return demanding condition.
Zhejiang Naibang Valves Co.,Ltd.is a specialized manufacturer of wafer check valves, which integrates research, development, manufacture and marketing.The company is supported by sophistecated equipment with over 100 machine tools and numerical control processing equipment. There are over 180 employees,including 26 technical and 20 managerial personnel.We pride ourselves on powerful product designing and manufacturing experience and complete quality control and after-sale service system.
Based on the management philosophy relying on market, quality management and innovation,NAlBANG has introduced in the advances manufacturing technology of valves. Strictly designed and manufactured to the standards of GB, ANSI/APl, DIN, NF, BS and JlS etc.,our products mainly cover wafer single disc lift and swing check valves and wafer double disc swing check valves (H77,H76,H74,H72,H71,H46 and H44),nominal diameter between 1/2"~60"(DN15~1500mm),nominal pressure between 150LB~2500LB(1.0MPa~25.0MPa),main materials in eluding carbon steel, low temperature steel, dual phase steel(F51/F53),titanium alloy, aluminium bronze,INCONELSS304,SS304L,SS316,$S316L,chrome molly bdenum steel, Monel (400/500)20# alloy and Hastelloy, etc.Widely used in the heavy industries of petrol eumnatural gas, electric power, steel, chemical, metallurgy, paper making, heating military and shipping etc.,our products have been greatly recognized by customers from Europe, America and Southeast Asia for their sound stability dependability,ability and out standing service.
Adhering to the market guideline of 'higher honesty, diligence and speciality',people of. NAlBANG, on the basis of joint development and mutua benefit, will continue to supply all our cooperative friends with excellent products and considerate service. We welcome your presence here for negotiation andVcooperation,striving for common resplendence.
