Powers 593 Series Flowrite II Heavy Duty Bronze Globe Control Valves - Manual (Page 13)

13
SPRINGS II
672-645 Total Actuator Area = 46”
Spring Valve Stroke
Rate (inches)
672-6142 672-646 (lbs.)
Number of Springs --- 0.125 0.1875 0.25 0.3125 0.375 0.5626 0.625 0.75 1 1.25 1.5
0 0 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000
2 0 164 0.4457 0.6685 0.8913 1.1141 1.3370 2.0058 2.2283 2.6739 3.5652 4.4565 5.3478
3 0 246 0.6685 1.0027 1.3370 1.6712 2.0054 3.0087 3.3424 4.0109 5.3478 6.6848 8.0217
4 0 328 0.8913 1.3370 1.7826 2.2283 2.6739 4.0116 4.4565 5.3478 7.1304 8.9130 10.6957
6 0 492 1.3370 2.0054 2.6739 3.3424 4.0109 6.0174 6.6848 8.0217 10.6957 13.3696 16.0435
0 2 104 0.2826 0.4239 0.5652 0.7065 0.8478 1.2720 1.4130 1.6957 2.2609 2.8261 3.3913
2 2 268 0.7283 1.0924 1.4565 1.8207 2.1848 3.2778 3.6413 4.3696 5.8261 7.2826 8.7391
3 2 350 0.9511 1.4266 1.9022 2.3777 2.8533 4.2807 4.7554 5.7065 7.6087 9.5109 11.4130
4 2 432 1.1739 1.7609 2.3478 2.9348 3.5217 5.2835 5.8696 7.0435 9.3913 11.7391 14.0870
6 2 596 1.6196 2.4293 3.2391 4.0489 4.8587 7.2893 8.0978 9.7174 12.9565 16.1957 19.4348
0 3 156 0.4239 0.6359 0.8478 1.0598 1.2717 1.9079 2.1196 2.5435 3.3913 4.2391 5.0870
2 3 320 0.8696 1.3043 1.7391 2.1739 2.6087 3.9137 4.3478 5.2174 6.9565 8.6957 10.4348
3 3 402 1.0924 1.6386 2.1848 2.7310 3.2772 4.9166 5.4620 6.5543 8.7391 10.9239 13.1087
4 3 484 1.3152 1.9728 2.6304 3.2880 3.9457 5.9195 6.5761 7.8913 10.5217 13.1522 15.7826
6 3 648 1.7609 2.6413 3.5217 4.4022 5.2826 7.9253 8.8043 10.5652 14.0870 17.6087 21.1304
0 4 208 0.5652 0.8478 1.1304 1.4130 1.6957 2.5439 2.8261 3.3913 4.5217 5.6522 6.7826
2 4 372 1.0109 1.5163 2.0217 2.5272 3.0326 4.5497 5.0543 6.0652 8.0870 10.1087 12.1304
3 4 454 1.2337 1.8505 2.4674 3.0842 3.7011 5.5526 6.1685 7.4022 9.8696 12.3370 14.8043
4 4 536 1.4565 2.1848 2.9130 3.6413 4.3696 6.5555 7.2826 8.7391 11.6522 14.5652 17.4783
6 4 700 1.9022 2.8533 3.8043 4.7554 5.7065 8.5613 9.5109 11.4130 15.2174 19.0217 22.8261
0 6 312 0.8478 1.2717 1.6957 2.1196 2.5435 3.8159 4.2391 5.0870 6.7826 8.4783 10.1739
2 6 476 1.2935 1.9402 2.5870 3.2337 3.8804 5.8217 6.4674 7.7609 10.3478 12.9348 15.5217
3 6 558 1.5163 2.2745 3.0326 3.7908 4.5489 6.8246 7.5815 9.0978 12.1304 15.1630 18.1957
4 6 640 1.7391 2.6087 3.4783 4.3478 5.2174 7.8275 8.6957 10.4348 13.9130 17.3913 20.8696
6 6 804 2.1848 3.2772 4.3696 5.4620 6.5543 9.8333 10.9239 13.1087 17.4783 21.8478 26.2174
SPRING RANGE MATRIX
The spring range matrix provides the theoretical spring ranges from
a given spring arrangement and valve stem travel.
You are encouraged to discuss your application with one of the
Powers application engineers.
In general, positioners are required to sequence valves. In some
circumstances it may be possible to sequence valves by changing
spring ranges and adjusting start points (preload adjustment).
Again, please consult with one of our application engineers for
assistance.
SPRING OPERATING SPAN (psi)
SPRINGS
CURRENT STD STD SS SS
ACTUATORS 672-642 672-615 672-646 672-645 STEM YOKE LOCK NUT
672-457R 0 0 0 4 672-634A 672-725 628-008
672-461R 0 0 0 6 672-634A 672-725 628-008
672-462R 0 0 0 6 672-634A 672-725 628-008
672-463R 0 0 0 6 672-634A 672-725 628-008
672-464R 0 0 3 6 672-636A 672-725 628-008
672-645R 0 0 0 6 672-636A 672-724 628-008
672-458R 0 0 6 6 672-634A 672-725 628-008
672-644R 0 0 6 6 672-634A 672-725 628-008
672-615 TOTAL SPRING VALVE STROKES
STANDARD RATE (lbs.) (inches)
Number of Springs 0.125 0.1875 0.25 0.3125 0.375
0 0 0.0000 0.0000 0.0000 0.0000 0.0000
1 245 0.6658 0.9986 1.3315 1.6644 1.9973
2 490 1.3315 1.9973 2.6630 3.3288 3.9946
3 735 1.9973 2.9959 3.9946 4.9932 5.9918
4 980 2.6630 3.9946 5.3261 6.6576 7.9891
5 1225 3.3288 4.9932 6.6576 8.3220 9.9864
6 1470 3.9946 5.9918 7.9891 9.9864 11.9837
Part No. Dia. Spring Rate
672-642 1.406” 82
672-615 2.175” 245
672-645 2.9” 82
672-646 1.459” 52