Packing gland must be tightened periodically to stop the leakage caused by normal packing shrinkage and wear. Also, newly installed valves are likely to require packing adjustment and should be checked during hydrotest and start-up. Packing compression is adjusted by rotating the integralgland wrench clockwise and tighten or counter-clockwise to loosen. The wrench is limited by the yoke arms to approximately 120 degrees of rotation. It is repositioned by lifting it above the gland splines, rotating it and re-engaging the splines. It is recommended that after packing adjustment the wrench be left in the fully counter-clockwise position so that the gland can be immediately tightened.