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
■One-Touch Coupling Shut-Off Valves
(Tube DIA.) | Number of circuits | Handle color | Effective cross section area (mm2) |
φ4 | 2way valve・3way valve | Blue・Red | 3.4 |
φ6 | 7.2 |
φ8 | 8.7 |
φ10 | 17.4 |
φ12 | 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-Rings - P Series
Material | Hardness (JIS Hs) | Color | Usable temperature range | JIS Symbol | Purpose |
Nitrile rubber | 70±5 | Black | -30-100℃ | Class1A | Mineral oil resistant |
90±5 | Black | -25-100℃ | Class1B |
Silicon rubber | 50±5 | Milky white | -50-200℃ | − | Heat resistant |
70±5 | Dark blue | -50-200℃ | Class4C |
Fluorine rubber | 70±5 | Black | -15-200℃ | Class4D |
90±5 | Black | -15-200℃ | − |
Ethylene- propylene rubber | 70±5 | Black | -45-130℃ | − | 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 | φ2.8 | φ1.9 | φ3 | φ6 |
P4 | φ3.8 | φ4 | φ7 |
P5 | φ4.8 | φ5 | φ8 |
P6 | φ5.8 | φ6 | φ9 |
P7 | φ6.8 | φ7 | φ10 |
P8 | φ7.8 | φ8 | φ11 |
P9 | φ8.8 | φ9 | φ12 |
P10 | φ9.8 | φ10 | φ13 |
P10A | φ9.8 | φ2.4 | φ10 | φ14 |
P11 | φ10.8 | φ11 | φ15 |
P11.2 | φ11 | φ11.2 | φ15.2 |
P12 | φ11.8 | φ12 | φ16 |
P12.5 | φ12.3 | φ12.5 | φ16.5 |
P14 | φ13.8 | φ14 | φ18 |
P15 | φ14.8 | φ15 | φ19 |
P16 | φ15.8 | φ16 | φ20 |
P18 | φ17.8 | φ18 | φ22 |
P20 | φ19.8 | φ20 | φ24 |
P21 | φ20.8 | φ21 | φ25 |
P22 | φ21.8 | φ22 | φ26 |
*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 |
φ1.9 | ±0.08 |
φ2.4 | ±0.09 |
φ3.5 | ±0.10 |
φ5.7 | ±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 | φ2.8 | ±0.14 | ±0.21 | ±0.16 |
P4 | φ3.8 |
P5 | φ4.8 | ±0.15 | ±0.22 | ±0.18 |
P6 | φ5.8 |
P7 | φ6.8 | ±0.16 | ±0.24 | ±0.19 |
P8 | φ7.8 |
P9 | φ8.8 | ±0.17 | ±0.25 | ±0.20 |
P10 | φ9.8 |
P10A | φ9.8 |
P11 | φ10.8 | ±0.18 | ±0.27 | ±0.21 |
P11.2 | φ11 |
P12 | φ11.8 | ±0.19 | ±0.28 | ±0.22 |
P12.5 | φ12.3 |
P14 | φ13.8 |
P15 | φ14.8 | ±0.20 | ±0.30 | ±0.24 |
P16 | φ15.8 |
P18 | φ17.8 | ±0.21 | ±0.31 | ±0.25 |
P20 | φ19.8 | ±0.22 | ±0.33 | ±0.26 |
P21 | φ20.8 | ±0.23 | ±0.34 | ±0.27 |
P22 | φ21.8 | ±0.24 | ±0.36 | ±0.28 |
P22A | φ21.7 |
P22.4 | φ22.1 |
P24 | φ23.7 |
P25 | φ24.7 | ±0.25 | ±0.37 | ±0.30 |
P25.5 | φ25.2 |
P26 | φ25.7 | ±0.26 | ±0.39 | ±0.31 |
P28 | φ27.7 | ±0.28 | ±0.42 | ±0.33 |
P29 | φ28.7 | ±0.29 | ±0.43 | ±0.34 |
P29.5 | φ29.2 |
P30 | φ29.7 |
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IDEA NOTE Push force is uniform
Two springs are placed in parallel for the workpiece pusher, making the push 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.