45
Counterbore diameter ø
D3
Seal bearing surface diameter ø
D2
Rz 25
(Sealing face)
Chamfer dimension
ø
D1
Female thread
inclination angle:
1 or less
Thread
Proper thickness
Proper
coating
range
Non-coating
range
With sealant
For Pneumatic Piping/Fittings & Tubing
Prior to Use
Fittings with Sealant
Seal material (fluororesin) is coated on the thread part with the proper thickness and range, that reduces the piping work, such as coating the seal
on the thread.
Female Thread Conditions Applicable to Face Seal
1. Surface roughness of bearing surface: Rz 25 or less
2. Chamfer dimension: ø
D1
, Seal bearing surface diameter: ø
D2
(Refer to the table below.)
3. Female thread inclination angle: 1 or less
4. Counterbore diameter when the female thread is counterbored.: ø
D3
· Models with width across flats: Body width across flats x 1.1 or more
· Models other than hexagon (Hexagon socket head male connector etc.): Body dime 0.2 mm or more
The width across flats and the body dimensions differ depending on the model even when the same thread size is used.
Refer to the dimensions in the catalog.
5. If oil content or sealant is sticking to the female thread, this may cause damage of the product. Remove it before piping.
Table 1
Precautions
For products that do not satisfy the female thread conditions shown above and the piping with a piping pitch narrower than the product dimension,
use the current sealant type.
The rubber parts of the face seal cannot be replaced.
The rubber parts of the face seal may fall off by the air blow and they cannot be mounted again. Be careful not to perform the air blow.
Connection
thread size
Chamfer dimension
ø
D1
[mm]
Seal bearing surface diameter
ø
D2
[mm]
R1/8
10.2 to 10.4
12 or more
R1/4
13.6 to 13.8
17 or more
R3/8
17.1 to 17.3
21 or more
R1/2
21.4 to 21.6
27 or more
NPT1/16
8.2 to 8.4
11.11 or more
NPT1/8
10.5 to 10.7
12.7 or more
NPT1/4
14.1 to 14.3
17.46 or more
NPT3/8
17.4 to 17.6
22 or more
NPT1/2
21.7 to 21.9
28.7 or more
G1/8
10.2 to 10.6
12 or more
G1/4
13.6 to 14.0
17 or more
G3/8
17.1 to 17.5
21 or more
G1/2
21.4 to 21.8
27 or more
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Содержание KQ2 Series
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