Installation Proline Promag 53 MODBUS RS485
30 Endress+Hauser
Promag P tightening torques for ANSI
Promag P tightening torques for JIS
Nominal diameter ANSI Screws Max. tightening torque
Pressure rating
[lbs]
PTFE PFA
[mm] [inch] [Nm] [lbf · ft] [Nm] [lbf · ft]
15 ½" Class 150 4 × ½" 6 4 – –
15 ½" Class 300 4 × ½" 6 4 – –
25 1" Class 150 4 × ½" 11 8 10 7
25 1" Class 300 4 × 5/8" 14 10 12 9
40 1 ½" Class 150 4 × ½" 24 18 21 15
40 1 ½" Class 300 4 × ¾" 34 25 31 23
50 2" Class 150 4 × 5/8" 47 35 44 32
50 2" Class 300 8 × 5/8" 23 17 22 16
80 3" Class 150 4 × 5/8" 79 58 67 49
80 3" Class 300 8 × ¾" 47 35 42 31
100 4" Class 150 8 × 5/8" 56 41 50 37
100 4" Class 300 8 × ¾" 67 49 59 44
150 6" Class 150 8 × ¾" 106 78 86 63
150 6" Class 300 12 × ¾" 73 54 67 49
200 8" Class 150 8 × ¾" 143 105 109 80
250 10" Class 150 12 × 7/8" 135 100 – –
300 12" Class 150 12 × 7/8" 178 131 – –
350 14" Class 150 12 × 1" 260 192 – –
400 16" Class 150 16 × 1" 246 181 – –
450 18" Class 150 16 × 1 1/8" 371 274 – –
500 20" Class 150 20 × 1 1/8" 341 252 – –
600 24" Class 150 20 × 1 ¼" 477 352 – –
Nominal diameter JIS
Pressure rating
Screws Max. tightening torque [Nm]
[mm] PTFE PFA
15 10K 4 × M 12 16 –
15 20K 4 × M 12 16 –
25 10K 4 × M 16 32 27
25 20K 4 × M 16 32 27
32 10K 4 × M 16 38 –
32 20K 4 × M 16 38 –
40 10K 4 × M 16 41 37
40 20K 4 × M 16 41 37
50 10K 4 × M 16 54 46
50 20K 8 × M 16 27 23
65 10K 4 × M 16 74 63
65 20K 8 × M 16 37 31
80 10K 8 × M 16 38 32
80 20K 8 × M 20 57 46
100 10K 8 × M 16 47 38
100 20K 8 × M 20 75 58
125 10K 8 × M 20 80 66
125 20K 8 × M 22 121 103