Instruction Manual

Instruction Manual
D103221X012
D3 FloPro Valve
February 2014
17
CAUTION
Avoid possible product damage which may affect proper operation of the diaphragm. Ensure the washer is aligned with the
hole in the diaphragm so the washer does not cut the diaphragm.
23. Installthediaphragmwasher(key22)overthevalvestemthreadswiththelipfacingupward.Ifyouareunsureof
the correct orientation for the diaphragm washer, see figure 7 view A for the correct orientation.
24. Install the diaphragm (key 23), diaphragm plate (key 24), diaphragm O-ring (key 19), and actuator spacer (key 26)
on the valve stem. Position the diaphragm so the holes in the diaphragm align with the holes in the lower casing.
25. Lubricate the threads above the stem nut (key 27) with anti-seize lubricant to prevent galling of t he threads.
26. I nstall the stem nut (key 27) and torque to 20 NSm(15lbfSft). Use a 1/8 inch drift punch to keep the valve stem
from turning as the hex nut is installed.
CAUTION
Non-symmetrical spring arrangement could cause actuator failure, resulting in possible product damage.
27. Install the correct number of springs (key 28) in a symmetrical pattern on the spring locators on the diaphragm
plate.Seefigure6fortheproperarrangement of the springs. The correct number of springs is dependent on your
application and supply pressure. See table 2 for the correct number of springs.
28. Place the upper casing (key 32) on the diaphragm and lower casing. Position the u pper casing so the holes in the
upper casing align with the holes in the diaphragm and lower casing.
CAUTION
Do not lubricate cap screws (key 29 and 31). The following torque specifications are for unlubricated bolting.
29. Install the two long cap screws (key 31) opposite each other. Install the hex nuts (key 30) onto the long cap screws
and tighten, alternating until the upper casing contacts the diaphragm. Keep the upper casing level during this
process.
30. I nstall the ten short cap screws (key 29) into the remaining holes and install hex nuts on the remaining cap screws.
31. Torque the hex nuts in a crossing pattern to 16 NSm(12lbfSft).
32. Make sure valve is fully seated and install the flow adjustor (keys 13 and 14) and hex socket head cap screws (key
15).
33. Set the desired flow rate position according to figure 2.
34. Tighten the hex socket head cap screws to 3 NSm(26lbfSin).
Spring-to-Open (Air-to-Close)
Key numbers are referenced in figure 8. The proper packing arrangement is shown in figure 3.
CAUTION
Avoid possible product damage in the following procedure by ensuring there are no burrs or sharp edges on any threads or
surfaces which may damage internal valve components during assembly.