Instruction Manual
D100423X012
V500 Valve
July 2017
16
Figure 8. Detail of Valve Plug for Pin Removal
A3307‐1
DRIVE PINS OUT
FROM THIS END
(SMALLER HOLE)
SLASH MARK ON SPLINED
END OF SHAFT
Table 9. Data for Tapped Hole in Valve Shaft
VALVE SIZE, NPS
SHAFT DIAMETERS
THREAD SIZE,
UNC
Through Valve Body At Spline End Through Valve Body At Spline End
mm mm Inches
1 12.7 12.7 0.50 0.50 10‐24
1-1/2 15.9 15.9 0.62 0.62 1/4‐20
2 15.9 12.7 0.62 0.62 10‐24
3
25.4 15.9 1.00 1.00 3/8‐16
25.4 25.4 1.00 0.75 5/16‐18
4 31.8 19.1 1.25 1.25 3/8‐16
6
38.1 38.1 1.50 1.50 1/2‐13
38.1 31.8 1.50 1.25 3/8‐16
8 38.1 38.1 1.50 1.50 1/2‐13
5. Refer to figure 8. Find the expansion pin (key 9) and the taper pin (key 10) inside of it. These parts are holding the
valve plug in position on the shaft. Find the larger hole in the valve plug hub where these pins enter the hub. On the
opposite side of the plug hub is a smaller hole where the chamfered end of the expansion pin rests on the inner lip
of the hole. Using a pin punch and hammer, strike the chamfered end of the expansion pin through the smaller
hole. Remove both pins from the valve plug hub in the direction shown in figure 8.
Driving the pins in the other direction will tighten the pins.
WARNING
To avoid personal injury or damage to tools, valve parts, or other items and plug damage resulting from the valve plug
falling from the valve body, support the plug to prevent it from falling as the shaft (key 3) is being removed.
6. Pull the shaft (key 3) from the valve body. If the shaft cannot be removed by hand, attach a slide hammer or similar
tool to the spline end of the valve shaft. Each shaft, on the NPS 6 and 8 sizes, has a tapped hole at the spline end of
the shaft; refer to table 9 for thread sizes.
To Next Page
Loading...
