*Valve Model Typical descriptions can be located in this pdf file.
Typical Descriptions

BALL VALVE REBUILDING KITS:        Kits are located on Repair Kits under Products

BALL VALVE REBUILDING INSTRUCTIONS: (Printer Friendly Adobe pdf)

•  Exercise normal safety precautions for commodity involved.

•  Before disassembly, cycle valve several times to relieve any residual pressure.

•  Disassemble valve completely.

•  Discard soft parts

•  Use OEM provided replacement parts only

•  Inspect for galled threads, bent parts, and wear and corrosion damage. Inspect valve body for scratches in sealing surfaces and carefully remove any excess scale or debris.

•  Pre-Assemble

2” or 3” Flanged:

Pre-assemble body and retainer with no seats or seals in place. Hand tighten to metal-to-metal fit. Apply mark across retainer and valve flange to note point of metal fit.  Disassemble.

All Other Valves:

No Pre-Assembly Required

•  Reassemble

4” Low Profile Valves without O-Rings:

Install Garlock 3500 (tan) stem seal first, (closest to the ball) then Grafoil® GHL (silver) on the stem then place stem in body.  Install packing from the top of the stem.  Apply light coat of suitable silicone-base lubricant to Teflon seats and seals to facilitate assembly and initial operation. Wipe excess clean.

All Other Valves:

Reassemble valve using new soft parts contained in kit. Apply light coat of suitable silicone-base lubricant to Teflon seats and seals to facilitate assembly and initial operation. Wipe excess clean.

•  Ensure ball is lined up in fully open position before installation and tightening of retainer.

                2” Angle Ball Valve             

Apply light coat of anti-seize lubricant to threads of retainer. Wipe excess clean.

Tighten retainer until 270-300 in-lb. of torque required to rotate valve stem. NOTE: Metal-to-metal is not achieved between retainer and valve body.

Tighten stem nut to 50 ft-lb.

                2” or 3” Flanged:                 

Apply light coat of anti-seize lubricant to threads of retainer. Wipe excess clean.

Tighten retainer until metal-to-metal achieved between retainer and valve body by matching up previous marks. NOTE: No torque value specified.

For 2" valve, tighten stem nut to 50 ft-lb.  For 3", tighten stem nut to 75 ft-lb.

                4” Low Profile Full Port / 4” Low Profile Regular Port (with or without O-Ring)                                    

Tighten retainer socket head cap screws evenly using criss-cross pattern until metal-to-metal fit achieved between retainer and valve body. Torque retainer cap screws to 100 ft-lb. Tighten stem nut to 125 ft-lb.

                4” Internal Ball Valve

Tighten retainer socket head cap screws evenly using criss-cross pattern until metal-to-metal fit achieved between retainer and valve body. Torque retainer cap screws to 480 in-lb. Tighten stem nut to 125 ft-lb

•  Open and close valve slowly to confirm it operates freely.

•  Store valve overnight in fully open position, then re-tighten valve retainer. Re-tighten valve stem nut.  Do not store valve in partially open position.

•  Test valve in closed position, and in open position with plug applied, at pressure to which it will be subjected in service.