TRANSMISSION RATE OF RISE VALVE
7C - 104
CROSS SECTION VIEW OF RATE OF RISE VALVE
1. Valve Housing
2. Modulating Piston
3. Piston Spring Retainer
4. Outer Piston Spring
5. Inner Piston Spring 9. Dowel Pin 13. Tube Spacer
6. Reducing Spool 10. Sequence Spool Spacer 14. End Cover Gasket
7. Reducing Spool Spring 11. Sequence Spool Disc 15. End Cover
8. Sequence Spool 12. Sequence Spool Spring 16. End Cover
SPECIFICATIONS
Modulating Piston Outer Spring (4);
Free Length ............................................................................ 46.23 mm (1.82 in)
Test Length ............................................................................ 31.75 mm (1.25 in)
Work Length ..............................................................21.59 to 36.06 mm (0.85 to 1.42 in)
Test Load ..................................................................... 160.1 to 177.9 N (36 to 40 lbf)
Number of Working Coils ................................................................................ 4
Modulating Piston Inner Spring (5);
Free Length ............................................................................ 87.63 mm (3.45 in)
Test Length ............................................................................. 71.12 mm (2.8 in)
Work Length ..............................................................55.88 to 73.15 mm (2.20 to 2.88 in)
Test Load ..................................................................... 160.1 to 177.9 N (36 to 40 lbf)
Number of Working Coils .............................................................................. 15.4
Reducing Spool Spring (7);
Free Length ........................................................................... 37.52 mm (1.477 in)
Test Length ............................................................................ 19.05 mm (0.75 in)
Work Length ............................................................ 19.05 to 23.49 mm (0.75 to 0.925 in)
Test Load ..................................................................... 160.1 to 177.9 N (36 to 40 lbf)
Number of Working Coils ............................................................................... 3.2
Sequence Spool Spring (12);
Free Length ............................................................................ 45.4 mm (1.787 in)
Test Length ................................................................................25.4 mm (1 in)
Work Length ........................................................... 15.14 to 29.36 mm (0.597 to 1.156 in)
Test Load ................................................................................... 17.8 N (4 lbf)
Number of Working Coils ................................................................................ 5
End Cover Bolt Torque ................................................................. 38 NCm (28 lbf ft) ±10%
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