Form
FVC 034—Rev 02
2 of 2
Step 17:
Lubricate the Sealing Area
○
C
of the Stem and then place the Stem and the Disc Holder into the Valve Body.
Step 18:
Install the Centering Bushing
○
9
, larger diameter first, over the Stem until the Bushing rests on the Disc Holder.
Step 19:
Place the Spring
○
8
over the Stem and onto the Bushing.
Step 20:
Place the new Seal Retainer
○
14
, larger diameter first, over the Stem and on top of the Spring.
Step 21:
Lubricate the new Stem Seal
○
15
and slide it over the Stem, against the Seal Retainer.
Step 22:
Lubricate the Seal Sleeve
○
16
and install it over the Stem, small end first, until it slips behind the Stem Seal.
Step 23:
Lightly lubricate the threads of the Bonnet, then place the Bonnet (with the previously assembled Seal Washer) over the Stem.
Gently push the Bonnet downward while turning it in a clockwise direction to engage the threads of the Valve Body. Tighten the
Bonnet securely, using a 12” pipe wrench.
Step 24:
Place the Handle Guide
○
3
, with the angled diameter facing downward,
over the end of the Stem.
Step 25:
Secure the Valve Body in the vise as if it were laying on its side, and rotate the Stem until the cross hole is facing upward.
Step 26:
Lay the Handle
○
1
on its side and start the new Handle Pivot Pin
○
2
into one side.
Step 27:
With the Pin pointing upward and the Handle in the ‘CLOSED’ position, align the Pin with the Stem’s cross hole, and drive the Pin
through the Stem and into the other side wall of the Handle. The Pin should be flush on both sides of the Handle.
Step 28: LATCH TEST
A)
Open and close the Handle three (3) times.
B)
In the ‘CLOSED’ position, spin the Handle around three (3) times.
C)
In the ‘OPEN’ position, rotate the Handle three (3) full revolutions. (This action will “seat” the Stem Seals.)
D)
Check the camming action by opening the Valve Handle fully and then pushing slowly on the Handle, allowing it to snap
shut with its own cam action.
NOTE:
When in the ‘CLOSED’ position, there must be at least 1/16” gap between the
Handle and the Handle Bearing
○
18
.
Step 29: PRESSURE TEST
After the Latch Test is complete, with the Valve in the ‘CLOSED’ position, the seal between the Valve Seat and Stem Seal
(surface
○
B
) should be ‘bubble-tight’, when pressurized at the inlet side to 75 PSIG with air and submerged in water.
Step 1:
To open the Valve, depress the top surface of the Handle Safety Lock at
○
D
and lift the Handle to its vertical position. When the
Valve is in the full ‘OPEN’ position, the heel of the Handle with rest squarely on the Handle Bearing
○
18
and the Handle will be
cammed over slightly past the center of the Valve.
Step 2:
To close the Valve, tap the Handle in the closing direction. The Handle will pivot in a ‘Quick Acting’ manner to the CLOSED position.
The closing spring action of the Valve Assembly is designed to force the Handle Safety Lock
○
19
to lock under the Bonnet Flange (see
note in FIGURE 1), therefore preventing accidental opening of the Valve.
WARNING! If the Valve is not allowed to snap shut under its own spring action, but is instead closed slowly by
holding the Handle as it is moved toward the CLOSED position, the Handle may not continue to its
STOP position. Make sure the handle Safety Lock
○
19
is engaged under the Bonnet Flange when the
Valve is in the CLOSED position.
Disassembly & Reassembly Procedure for Repair
(cont’d.)
REFER TO FIGURE 1 FOR THE FOLLOWING
Operation of the Quick Acting Valve
REFER TO FIGURE 1 FOR THE FOLLOWING
FIGURE 1