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| H12W Vertical Check Valve
The H12W stainless steel internal thread lift check valve, known for its high precision, elegant design, compact size, and spring-assisted operation, offers versatility in installation with both vertical and horizontal orientations. It plays a crucial role in preventing the backflow of media within pipeline systems.
1. Main parts material
(1) Valve body & Disc & Stem: SUS304(CF8), SUS304L(CF3), SUS316(CF8M), SUS316L(CF3M).
(2) Seal parts：PTFE & stainless steel
2. Product features
(1) Compact structure: Short length structure, small size and light weight.
(2) Quick closing: Vertical check valve disc closes rapidly, effectively reducing the fluid pressure.
(3) Smooth flow channel: Small fluid resistance, sensitive action and good sealing performance.
(4) Easy installation: Two installation methods in horizontal and vertical directions.
(5) Spring design: The valve plate adopts the design of adding two torsion springs on the dual plate, which can make the valve plate close quickly by itself.
3. Working principle
H12W screw thread vertical check valve relies on the pressure of the medium at the inlet end of the pipeline to overome the spring resistance and open or close the check valve.
When the media pressure at the inlet end is lower than that at the outlet end, the spring pushes the valve core toward the valve seat, closing the valve and preventing the medium from flowing back.
4. Installation & Maintainance
(1) The installation and commissioning of the valve must be performed by qualified professionals to ensure that the coaxiality deviation of the pipelines at both ends is not too large, so as to avoid excessive end-to-end installation stress that may cause damage to the valve.
(2) When tightening, the hexagonal or octagonal part on the same side of the thread should be wrenched, and the hexagonal or octagonal part on the other end of the valve should be avoided to prevent the valve from deforming.
(3) To ensure the normal use of the valve, it is recommended to install a filter at the pipeline inlet to prevent impurities from getting stuck in the valve disc, causing the valve to not stop.
| Size
| H12W Series Vertical Check Valve | |||
| Norminal Size | NPT | Outside Diameter at Bevel | Inside Diameter |
| DN15 | 1/2'' | 20 mm | 19 mm |
| DN20 | 3/4'' | 25.5 mm | 24 mm |
| DN25 | 1'' | 32 mm | 30 mm |
| DN32 | 1 1/4'' | 40.5 mm | 39 mm |
| DN40 | 1 1/2'' | 46 mm | 44 mm |
| DN50 | 2'' | 58 mm | 56.5 mm |
| DN65 | 2 1/2'' | 74 mm | 72.5 mm |
| DN80 | 3'' | 86 mm | 84.5 mm |
| DN100 | 4 | 112 mm | 110 mm |
| Vertical check valve parameter table
| Product name | H12W Screw Thread Vertical Check Valve | |
| Type | Vertical type | |
| Connection | Female Thread End: BSPT, NPT, DIN2999 | |
| Material | CF3, CF3M, CF8, CF8M etc | |
| Size | DN15 - DN100 | |
| Class | PN6, PN10, PN16 | |
| Temperature | -20~180℃ | |
| Media | W.O.G etc. | |
| General Standard | Material standard: A351-CF8M/SCS14A/1.4408、A351-CF8/SCS13A/1.4308 Design standard: GB12236, ASME B16.34 Pressure - Temperature Class: GB9131, JB/T74, HG20604 Flange ends standard: JB/T74-94, GB9113, HG20592-2063 Test standard: JB/T9092-1999, GB13927, MSS SP-110, EN 1226 Thread standard: ASME B1.20.1, BS21, DIN2999/259, ISO 228/1,JIS B 0203, ISO 7/1 | |
| FAQ
I. H12W & H14W Check valve: Key Difference
| H12W Vertical Check Valve | H14W Swing Check Valve | |
| Structure | Elevating structure (vertical type) The valve disc moves perpendicular to the pipe axis to open and close | Swing type The disc rotates around the rotating shaft to open and close |
| Installation method | Vertical installation | Vertical or horizontal installation |
| Sealing method | Spring device auxiliary seal | Elastic seal structure |
| Applicable media & temperature | Water, oil, liquid Operating temperature ≤420℃ | Water, oil, gas and some corrosive liquids Temperature range -20 ~ 232℃ ~ 350℃ |
| Fluid resistance | Large | Small, suitable for large diameter pipe |
| Pressure rating | 6-16Mpa | 6-64Mpa |
II. Refined guidlines for selecting appropriate check valve
1. Assess Working Conditions:
(1) Temperature: Choose materials like stainless steel or high-temperature alloys for valves exposed to high temperatures.
(2) Pressure: Opt for valves with robust structures and superior sealing for high-pressure applications.
2. Evaluate Medium Characteristics:
(1) Chemical Properties: Select corrosion-resistant materials to withstand the chemical nature of the medium.
(2) Physical Properties: Consider medium viscosity, as it impacts the valve's closing performance.
3.Meet Flow Requirements:
Select a check valve that aligns with the pipeline system's flow demands to ensure system efficiency.
4.Determine Installation Method:
Consider the check valve's installation position, whether it be in horizontal, vertical, or inclined pipelines.
5.Choose Check Valve Types:
(1) Lift Type: Ideal for horizontal or vertical pipelines, offers good sealing but with higher fluid resistance.
(2) Swing Type: Suitable for horizontal pipelines, features lower fluid resistance but may compromise on sealing performance.
(3) Butterfly Type: Versatile for various orientations, including horizontal, vertical, or inclined pipelines.
6.Enhance Sealing Performance:
For applications sensitive to closing water hammer, select check valves with features like fast-closing silencers or slow-closing dampers.
7.Manage Water Hammer Effects:
In locations susceptible to water hammer, such as pump outlets, choose check valves capable of quick closure to mitigate water hammer impacts.
8.Address Special Requirements:
Consider silent check valves to minimize noise during pump shutdown, especially in noise-sensitive environments.
| H12W Vertical Check Valve
The H12W stainless steel internal thread lift check valve, known for its high precision, elegant design, compact size, and spring-assisted operation, offers versatility in installation with both vertical and horizontal orientations. It plays a crucial role in preventing the backflow of media within pipeline systems.
1. Main parts material
(1) Valve body & Disc & Stem: SUS304(CF8), SUS304L(CF3), SUS316(CF8M), SUS316L(CF3M).
(2) Seal parts：PTFE & stainless steel
2. Product features
(1) Compact structure: Short length structure, small size and light weight.
(2) Quick closing: Vertical check valve disc closes rapidly, effectively reducing the fluid pressure.
(3) Smooth flow channel: Small fluid resistance, sensitive action and good sealing performance.
(4) Easy installation: Two installation methods in horizontal and vertical directions.
(5) Spring design: The valve plate adopts the design of adding two torsion springs on the dual plate, which can make the valve plate close quickly by itself.
3. Working principle
H12W screw thread vertical check valve relies on the pressure of the medium at the inlet end of the pipeline to overome the spring resistance and open or close the check valve.
When the media pressure at the inlet end is lower than that at the outlet end, the spring pushes the valve core toward the valve seat, closing the valve and preventing the medium from flowing back.
4. Installation & Maintainance
(1) The installation and commissioning of the valve must be performed by qualified professionals to ensure that the coaxiality deviation of the pipelines at both ends is not too large, so as to avoid excessive end-to-end installation stress that may cause damage to the valve.
(2) When tightening, the hexagonal or octagonal part on the same side of the thread should be wrenched, and the hexagonal or octagonal part on the other end of the valve should be avoided to prevent the valve from deforming.
(3) To ensure the normal use of the valve, it is recommended to install a filter at the pipeline inlet to prevent impurities from getting stuck in the valve disc, causing the valve to not stop.
| Size
| H12W Series Vertical Check Valve | |||
| Norminal Size | NPT | Outside Diameter at Bevel | Inside Diameter |
| DN15 | 1/2'' | 20 mm | 19 mm |
| DN20 | 3/4'' | 25.5 mm | 24 mm |
| DN25 | 1'' | 32 mm | 30 mm |
| DN32 | 1 1/4'' | 40.5 mm | 39 mm |
| DN40 | 1 1/2'' | 46 mm | 44 mm |
| DN50 | 2'' | 58 mm | 56.5 mm |
| DN65 | 2 1/2'' | 74 mm | 72.5 mm |
| DN80 | 3'' | 86 mm | 84.5 mm |
| DN100 | 4 | 112 mm | 110 mm |
| Vertical check valve parameter table
| Product name | H12W Screw Thread Vertical Check Valve | |
| Type | Vertical type | |
| Connection | Female Thread End: BSPT, NPT, DIN2999 | |
| Material | CF3, CF3M, CF8, CF8M etc | |
| Size | DN15 - DN100 | |
| Class | PN6, PN10, PN16 | |
| Temperature | -20~180℃ | |
| Media | W.O.G etc. | |
| General Standard | Material standard: A351-CF8M/SCS14A/1.4408、A351-CF8/SCS13A/1.4308 Design standard: GB12236, ASME B16.34 Pressure - Temperature Class: GB9131, JB/T74, HG20604 Flange ends standard: JB/T74-94, GB9113, HG20592-2063 Test standard: JB/T9092-1999, GB13927, MSS SP-110, EN 1226 Thread standard: ASME B1.20.1, BS21, DIN2999/259, ISO 228/1,JIS B 0203, ISO 7/1 | |
| FAQ
I. H12W & H14W Check valve: Key Difference
| H12W Vertical Check Valve | H14W Swing Check Valve | |
| Structure | Elevating structure (vertical type) The valve disc moves perpendicular to the pipe axis to open and close | Swing type The disc rotates around the rotating shaft to open and close |
| Installation method | Vertical installation | Vertical or horizontal installation |
| Sealing method | Spring device auxiliary seal | Elastic seal structure |
| Applicable media & temperature | Water, oil, liquid Operating temperature ≤420℃ | Water, oil, gas and some corrosive liquids Temperature range -20 ~ 232℃ ~ 350℃ |
| Fluid resistance | Large | Small, suitable for large diameter pipe |
| Pressure rating | 6-16Mpa | 6-64Mpa |
II. Refined guidlines for selecting appropriate check valve
1. Assess Working Conditions:
(1) Temperature: Choose materials like stainless steel or high-temperature alloys for valves exposed to high temperatures.
(2) Pressure: Opt for valves with robust structures and superior sealing for high-pressure applications.
2. Evaluate Medium Characteristics:
(1) Chemical Properties: Select corrosion-resistant materials to withstand the chemical nature of the medium.
(2) Physical Properties: Consider medium viscosity, as it impacts the valve's closing performance.
3.Meet Flow Requirements:
Select a check valve that aligns with the pipeline system's flow demands to ensure system efficiency.
4.Determine Installation Method:
Consider the check valve's installation position, whether it be in horizontal, vertical, or inclined pipelines.
5.Choose Check Valve Types:
(1) Lift Type: Ideal for horizontal or vertical pipelines, offers good sealing but with higher fluid resistance.
(2) Swing Type: Suitable for horizontal pipelines, features lower fluid resistance but may compromise on sealing performance.
(3) Butterfly Type: Versatile for various orientations, including horizontal, vertical, or inclined pipelines.
6.Enhance Sealing Performance:
For applications sensitive to closing water hammer, select check valves with features like fast-closing silencers or slow-closing dampers.
7.Manage Water Hammer Effects:
In locations susceptible to water hammer, such as pump outlets, choose check valves capable of quick closure to mitigate water hammer impacts.
8.Address Special Requirements:
Consider silent check valves to minimize noise during pump shutdown, especially in noise-sensitive environments.
