
Instruction Manual
D102013X012
8560 Valve
June 2017
20
CAUTION
The seal ring will be damaged if the disc remains in the closed position during seal and retainer ring assembly.
b. Install the metal seal ring assembly (see figure 11).
3.
Installing the retainer ring:
a. Valves with PTFE seal rings do not require a retainer ring gasket (key 16).
b. Valves with metal seals require a retainer ring gasket (key 16).
CAUTION
When handling the new retainer ring gasket, be sure to avoid kinking, cracking, or breaking the gasket. Damage to the
gasket can cause leakage between the seal retainer and valve body.
c. Lay the gasket (key 16) down so that it is accurately centered on the valve body.
4.
For valves with press‐fit retainer rings
a. Wipe excessive oil off the retainer ring outside diameter, and off the retainer counterbore in the valve body.
b. Rotate the disc to the open position.
c. Lay the retainer ring on the valve body.
d. Use a press, or a soft‐faced hammer to press the retainer ring into its groove in the valve body.
CAUTION
It takes a considerable amount of force with a hammer to drive the retainer ring into place. Be sure not to damage retainer
ring surfaces when installing the ring.
e. The retainer ring is properly seated when the face of the retainer ring is flush with the face of the valve body.
f. To ensure proper seal performance for metal seals, you may need to use the hammer to drive the disc open for
the first few times. When closing the valve, use the C‐clamps discussed in the next few steps.
CAUTION
Do not damage the gasket seating surfaces on either the valve body or the retainer ring when installing or removing the
C‐clamps. Protect the gasket surface by using a soft material between the clamp and valve body/retaining ring serrations
to avoid damage.