1> High-Pressure Ball Valve Stem and Handle Dimensions and Torque Table (304 Stainless Steel Stem)
Parameter table [mm]
Valve stem
SW
Valve stem opposite side S1
Handle opposite side S2
Valve stem d
Handle D
(minimum)
Axle height A
(Maximum)
Stair thickness H
Torque
(Maximum)
smallest
Maximum
smallest
Maximum
smallest
Maximum
160bar
320bar
7
6.91
6.97
7
7.06
8.7
9.0
9.3
9.0
≥1.5
≥2.1
17Nm
9
8.91
8.97
9
9.06
11.3
11.6
12.0
10.5
≥1.5
≥2.5
35Nm
11
10.88
10.96
11
11.06
13.8
14.2
14.6
12.5
≥1.6
≥2.8
68Nm
12
11.88
11.96
12
12.08
15.0
15.5
16.0
14.0
≥1.7
≥2.9
90Nm
14
13.88
13.96
14
14.08
17.5
18.1
18.6
15.0
≥2.0
≥3.2
130Nm
17
16.88
16.96
17
17.08
21.3
21.9
22.6
18.0
≥2.3
≥3.9
250Nm
19
18.88
18.96
19
19.08
23.7
24.5
25.3
22.0
≥2.6
≥4.3
340Nm
22
21.85
21.95
22
22.10
27.6
28.4
29.3
25.0
≥3.0
≥5.0
520Nm
27
26.85
26.95
27
27.10
34.0
34.8
36.0
30.0
≥3.6
≥6.2
1000Nm
36
35.86
35.94
36
36.10
45.6
46.4
48.0
40.0
≥4.8
≥8.2
2000Nm
II> Valve Rotary Actuator Mounting Flange (ISO 5211)
Flange
Type
d
M
h
smallest
Least squares method
Lan Torque
F03
36
M5
8
32Nm
F04
42
M5
8
63Nm
F05
50
M6
9
125Nm
F07
70
M8
12
250Nm
F10
102
M10
15
500Nm
F12
125
M12
18
1000Nm
F14
140
M16
24
2000Nm
F16
165
M20
30
4000Nm
3> Pressure resistance and guidance of the check valve spool Operating condition: The medium pressure inside the check valve is P, and the force exerted by the valve spool on the valve body is F. 1. Calculation of the valve spool’s pressure resistance (shear stress verification of the valve spool): a ≥ PD² / (3.6[τ]d) 2. Spool guide length h h≥d1
F(N)
Spool pressure against the housing
P(MPa)
Medium pressure
[τ](MPa)
Shear stress, stainless steel 304 [τ] = 78 MPa
d(mm)
Orifice extrusion diameter
D(mm)
Sealed outer diameter
a(mm)
Cut length
A(mm²)
Shear area
d1(mm)
Check valve spool guide hole diameter
Example: The check valve has a maximum working pressure P = 40 MPa, an orifice diameter d = 21 mm, and a sealing outer diameter D = 25 mm. a≥40*252/(3.6*78*21)=4.24mm
4> Eccentricity S of the axial force on the piston and guide sleeve, and guide length h 1. To prevent the piston from seizing during movement within the housing, it is preferable to minimize the eccentricity S of the axial force F; typically, S ≤ 0.4D, as shown in Figure A, with S ≈ 0. If S > 0.4D, the direction of the force F can be offset toward the axis, as illustrated in Figure B. 2. To ensure smooth motion of the piston and guide tube and to prevent component wear, it is necessary to provide an adequate guiding length h, as shown in Figures A–D. The required guiding length h is specified in the table on the right.
