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Page Title: APPENDIX A MAINTENANCE AND ASSEMBLY INSTRUCTIONS FOR PBM BALL VALVES
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APPENDIX A MAINTENANCE AND ASSEMBLY INSTRUCTIONS FOR PBM BALL VALVES Two-Way Valves "SP" Series 1.) PBM  valves  are  designed  with  an  "Adjust-o-Seal"  feature.    If  the  valves  show  signs  of  leakage  due  to  normal seat and seal wear, torque up the body bolts evenly alternating from body bolt to body bolt until leakage stops and valve operates smoothly.  The following should be noted with respect to torque on body bolts. a.    There should always be a space between end fittings and body initially.  This is the adjust-o-seal feature that allows for the external adjustment or the seats and seals. b. Valve body bolts should only be tightened until you reach the breakaway torque’s off the valve stem listed below.  (do not exceed maximum) Valve Size Breakaway  Torque 1/4", 3/8", 1/2" SP-12 4 ft/lbs. 3/4" SP-13 5 ft/lbs. 1" SP-14 7 ft/lbs. 1-1/4" SP-15 11 ft/lbs. 1-1/2" SP-16 16 ft/lbs. 2" SP-17 20 ft/lbs. 2-1/2" SP-18 32 ft/lbs. 3" SP-19 44 ft/lbs. 4" SP-20 68 ft/lbs. 6" SP-22 150 ft/lbs. 8' SP-24 250 ft/lbs. 2.) If valve shows signs of leakage in stem area due to normal stem packing wear, tighten gland nut until leakage stops and valve operates smoothly. 3.) After  all  adjustments  are  made  on  the  seats  and  seals  and  valve  is  bolted  metal  to  metal,  a  new  repair  kit  is required.  These parts come in kit form, each containing: A7-11

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