Hand Valve
Product name | One-Touch Coupling Shut-Off Valves |
Part number | BVHVU4-3 |
Features | Residual Pressure Relief Valves |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
For an operator to control the inspection timing.
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Available sizes
■Hand valve both ends One-Touch Coupling
(Tube DIA.) | Number of circuits | Handle color | Effective cross section area (mm²) |
Ø4 | 2way valve ・ 3way valve | Blue ・ Red | 3.4 |
Ø6 | 7.2 |
Ø8 | 8.7 |
Ø10 | 17.4 |
Ø12 | 18.1 |
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O Ring
Product name | O-Rings/P Series |
Part number | NPA5 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Economical and proven airtight component.
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Available sizes
■O ring P series
Material | Hardness (JIS Hs) | Color | Usable temperature range | JIS Symbol | Purpose |
Nitrile rubber | 70±5 | Black | -30 - 100°C | Class1A | Mineral oil resistant |
90±5 | Black | -25 - 100°C | Class1B |
Silicon rubber | 50±5 | Milky white | -50 - 200°C | - | Heat resistant |
70±5 | Dark blue | -50 - 200°C | Class4C |
Fluorine rubber | 70±5 | Black | -15 - 200°C | Class4D |
90±5 | Black | -15 - 200°C | - |
Ethylene - propylene rubber | 70±5 | Black | -45 - 130°C | - | Weather resistant |
■Sizes and Dimensions (Excerpt)
JIS nominal number | Ring I.D. | Ring Wire DIA. | Mating side DIA. |
Against O ring |
Internal contact | External contact |
P3 | Ø2.8 | Ø1.9 | Ø3 | Ø6 |
P4 | Ø3.8 | Ø4 | Ø7 |
P5 | Ø4.8 | Ø5 | Ø8 |
P6 | Ø5.8 | Ø6 | Ø9 |
P7 | Ø6.8 | Ø7 | Ø10 |
P8 | Ø7.8 | Ø8 | Ø11 |
P9 | Ø8.8 | Ø9 | Ø12 |
P10 | Ø9.8 | Ø10 | Ø13 |
P10A | Ø9.8 | Ø2.4 | Ø10 | Ø14 |
P11 | Ø10.8 | Ø11 | Ø15 |
P11.2 | Ø11 | Ø11.2 | Ø15.2 |
P12 | Ø11.8 | Ø12 | Ø16 |
P12.5 | Ø12.3 | Ø12.5 | Ø16.5 |
P14 | Ø13.8 | Ø14 | Ø18 |
P15 | Ø14.8 | Ø15 | Ø19 |
P16 | Ø15.8 | Ø16 | Ø20 |
P18 | Ø17.8 | Ø18 | Ø22 |
P20 | Ø19.8 | Ø20 | Ø24 |
P21 | Ø20.8 | Ø21 | Ø25 |
P22 | Ø21.8 | Ø22 | Ø26 |
* Please see the product pages for other diameter rings.
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Accuracy Info
■Accuracy of O ring P series
Ring wire DIA. tolerance:
Wire DIA. | tolerance |
Ø1.9 | ±0.08 |
Ø2.4 | ±0.09 |
Ø3.5 | ±0.10 |
Ø5.7 | ±0.13 |
Parting surface burr height: 0.1 or less
Parting surface burr width: 0.15 or less
Ring I.D. tolerance:
JIS nominal number | Ring I.D. | Tolerance |
Nitrile | Silicon | Fluorine |
Ethylene |
P3 | Ø2.8 | ±0.14 | ±0.21 | ±0.16 |
P4 | Ø3.8 |
P5 | Ø4.8 | ±0.15 | ±0.22 | ±0.18 |
P6 | Ø5.8 |
P7 | Ø6.8 | ±0.16 | ±0.24 | ±0.19 |
P8 | Ø7.8 |
P9 | Ø8.8 | ±0.17 | ±0.25 | ±0.20 |
P10 | Ø9.8 |
P10A | Ø9.8 |
P11 | Ø10.8 | ±0.18 | ±0.27 | ±0.21 |
P11.2 | Ø11 |
P12 | Ø11.8 | ±0.19 | ±0.28 | ±0.22 |
P12.5 | Ø12.3 |
P14 | Ø13.8 |
P15 | Ø14.8 | ±0.20 | ±0.30 | ±0.24 |
P16 | Ø15.8 |
P18 | Ø17.8 | ±0.21 | ±0.31 | ±0.25 |
P20 | Ø19.8 | ±0.22 | ±0.33 | ±0.26 |
P21 | Ø20.8 | ±0.23 | ±0.34 | ±0.27 |
P22 | Ø21.8 | ±0.24 | ±0.36 | ±0.28 |
P22A | Ø21.7 |
P22.4 | Ø22.1 |
P24 | Ø23.7 |
P25 | Ø24.7 | ±0.25 | ±0.37 | ±0.30 |
P25.5 | Ø25.2 |
P26 | Ø25.7 | ±0.26 | ±0.39 | ±0.31 |
P28 | Ø27.7 | ±0.28 | ±0.42 | ±0.33 |
P29 | Ø28.7 | ±0.29 | ±0.43 | ±0.34 |
P29.5 | Ø29.2 |
P30 | Ø29.7 |
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IDEA NOTE Pushing force is uniform
Two springs are placed parallel to the workpiece pusher, making the pushing force uniform over a large surface.
IDEA NOTE High accuracy clamping with linear guides
A linear guide is placed under the workpiece pusher with a toggle clamp on the tip, stabilizing the pusher operation when pushed by the toggle clamp.