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APPENDIX A
1/4", SP-12 through 4", SP-20 .....................................Quan.
(2) teflon seats
(2) teflon body gaskets
(1) Teflon stem packing
6", SP-22 and 8", SP-24 ..............................................Quan.
(2) teflon seats
(2) Viton o-ring body gaskets
(1) teflon stem packing
4.) To replace the above parts, please adhere to the following instructions:
a. Loosen and remove body section from the line.
b.
If valve is actuated, remove actuator, bracket and coupling.
c.
Remove seats and body seals from end fittings.
d.
Remove lock nut, handle, gland, stem, gland ring and stem packing.
e.
Ball is now free, so remove it, being very careful not to scratch or nick the exterior surface.
f.
Wash and clean all parts
*g.
Replace ball in body, making certain not to scratch the exterior surface.
h.
Place new stem packing, gland ring, stem and gland into valve. body in sequential order. Engage stem
into ball (a rubber hammer may be used due to light press fit) and tighten gland to hand tight position.
* *i.
Place seats and body seals into proper position in end fittings, lubricating both end fitting seat cavities and
sealing surfaces on seats and seals.
j.
Place end fittings into proper locations on valve body section and tighten body bolts hand tight, making
certain ball port is centrally located with end fitting inside diameters.
k.
Torque up the body bolts evenly alternating from body bolt to body bolt. Ball should be turned several
times with torquing to assure smooth operation. The following should be noted with respect to torque on body bolts.
(1) There should always be a space between end fittings and body initially. This is the adjust-o-seal
feature that allows for the external adjustments of seats and seals.
(2) Valve body bolts should only be tightened until you reach the breakaway torques off the valve stem
listed on Page 1, Item 1 under b.
l.
Rotate ball several times, then tighten down firmly on gland.
m.
Place handle in position and secure with lock nut. (if valve is actuated, see actuator assembly instructions)
* See Engineering Data Form "F" in booklet to aid in assembly.
* * STP recommended lubricant.
A7-12
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