INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
FIGURE 310AM, 310AMSW & 311AM 3-PIECE BALL VALVE
INTRODUCTION
This instruction manual includes installation, operation and maintenance information for the figure 310AM,
310AMSW, and 311AM 3-piece 1000CWP, threaded end (NPT) or socket weld end (SW) ball valve.
INSTALLATION
WARNING
To avoid personal injury to your self, fellow workers, or damage to property from release of process fluid, before
installation:
a. Shut off all operating lines to the valve site
b. Isolate the valve site completely from the process
c. Release process pressure
d. Drain the process fluid from the valve site
1. Remove the protective plastic cap from the threaded ends and clean or flush the valve.
2. Before installing the valve, inspect the valve body port and associated equipment for any damage that may
have occurred and for any foreign matter that may have collected in shipping or storage. Make certain the
body interior is clean.
3. Before installing the valve, inspect the pipe line and mating pipe threads, making sure the pipe is free of
foreign material and the threads are clean and have no burrs or pits that could cause leakage.
4. Cycle the valve a couple of times before installation. Valves that are tested to MSS SP-110 may have water
trapped between the ball and body cavity. This can be removed by partially opening the valve, exposing the
cavity to the through port of the ball. Allow the water to drain out.
5. Ensure that piping is aligned properly so there is no tension applied to the valve when installed. Use pipe
hangers or other supports as necessary to properly align piping.
6. For Threaded End Valve:
o Use applicable sealant (e.g. - PTFE tape, high temperature pipe seal, etc.) to seal threaded ends on the
pipeline.
o If required for installation (i.e. – The pipe can not be rotated), remove the body bolts and end caps.
Secure the seats and body seals with tape so they are not lost.
o To prevent distortion or damage to the valve, do not apply torque through the valve. When tightening the
valve, always use a wrench on the end nearest the pipe being tightened. It is preferred that the pipe be
screwed into the valve, holding the valve stationary at the end being connected. Do not use the handle to
tighten the assembly as damage to the valve may occur.
o If the valve was disassembled for installation, reinstall the body assembly and reinsert the body bolts.
SLIGHTLY tighten all bolts, making sure the body and end caps are parallel to prevent distortion of the
end caps during the final tightening phase. Using the torque values in Table 1, tighten the body bolts
evenly. Check the valve for proper operation. The valve should stroke smoothly and evenly with no
binding (Higher seating and unseating torque is normal).
7. For Socket Weld End Valve:
o With the valve in the open position and pipe fully inserted into the socket weld ends, tack-weld the valve
to the pipe in four equidistant points on both end caps.
o Remove all but one of the body bolts and loosen the remaining one so that the valve body assembly can
swing out of the way.
o Secure the seats and body seals with tape so they are not lost. It is recommended to temporarily cover
the body assembly during welding to protect the soft seats and seals from damage.
o Finish welding both end caps onto the pipe.
o After all components have cooled, clean all valve surfaces.
o Swing the body back to the original position and reinsert the body bolts.
o SLIGHTLY tighten all bolts, making sure the body and end caps are parallel to prevent distortion of the
end caps during the final tightening phase.
o Using the torque values in Table 1, tighten the body bolts evenly.
o Check the valve for proper operation. The valve should stroke smoothly and evenly with no binding
(Higher seating and unseating torque is normal).
8. Clean/flush the pipeline and leak test the system prior to using.
DOC: IOM_FNW310(1)AM_ ver_4-2011 Page 1 of 6
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
FIGURE 310AM, 310AMSW & 311AM 3-PIECE BALL VALVE
BODY BOLT TORQUES for ASTM A193-B8
Valve
Size
1/4" 1/4-20UNC 70 7.9
3/8" 1/4-20UNC 70 7.9
1/2" 1/4-20UNC 70 7.9
3/4" 5/16-18UNC 100 11.3
1" 5/16-18UNC 100 11.3
1-1/4" 3/8-16UNC 160 18.1
1-1/2" 3/8-16UNC 160 18.1
2" 3/8-16UNC 160 18.1
2-1/2" 9/16-12UNC 580 65.6
3" 9/16-12UNC 580 65.6
4” 5/8-11UNC 800 90.5
1. Ensure that the valve materials are compatible with the service and that the operating characteristics are
below the valve maximums.
2. Fluids containing particles or coagulating agents are not acceptable as they can reduce the life of the seats
and cause the torque to increase dramatically.
3. Care must be taken if throttling the valve (operation in partially open position). Critical pressure drops and
high flow rates can decrease the life of, or damage, the seats. For optimum operation, open/close
applications are recommended.
4. The valve comes standard with a locking device. Slide the locking plate up the lever before operating. Open
and close the valve by turning the handle one-quarter turn (90°).
5. The valve is in the open position when the handle is parallel to the pipe, and in the closed position when
perpendicular to the pipe.
Bolt Size
Table 1
OPERATION
In-Lbs NM
DOC: IOM_FNW310(1)AM_ ver_4-2011 Page 2 of 6
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
FIGURE 310AM, 310AMSW & 311AM 3-PIECE BALL VALVE
MAINTENANCE
Valve parts are subject to normal wear and must be inspected and replaced as necessary. Inspection and
maintenance frequency depends on the severity of the service conditions. This section includes instructions for
packing adjustments, repacking, seat replacement and seating adjustment.
WARNING
To avoid personal injury, fellow workers, or damage to property from release of process fluids, before installation:
a. Shut off all operating lines to the valve.
b. Isolate the valve completely from the process.
c. Release process pressure.
d. Drain the process fluid from the valve.
1. Ball valves, if properly used, do not require internal lubrication or maintenance. However, a visual inspection
should be part of a regular maintenance program. A higher frequency of inspection is recommended for
valves operating under extreme conditions. Also, for proper operation it is recommended that the valve be
opened and closed at least twice a year.
2. Before any maintenance, open and close the valve at least once to release the pressure completely from the
valve body.
3. The valve includes live loaded packing that reacts to pressure changes and packing fatigue to reduce the
intervals needed for packing adjustments. If the stem packing leaks, remove the operator to access the stem
nut. Use a long reaching socket over the stem to turn the stem nut clockwise at 30° to 60° intervals until the
leak stops. If the stem nut can not be turned clockwise any further, or if the stem packing continues to leak, it
will have to be replaced or repaired. NEVER REPLACE VALVE PACKING WHILE THE VALVE IS IN
SERVICE.
4. The valve can be rebuilt by using a “Soft Goods” repair kit from FNW.
Disassembly
A. In the closed position, secure the valve by the body in a vise. Do not over-tighten the vise or the
B. Remove the operator if one is installed.
C. For 4” valves, remove the set screw (21) that secures to the stem (6) and lift the handle assembly and
D. If the end caps are present, remove the body bolts (18), nuts (17), and washers (16).
E. Remove the seats (4), and the body gaskets (5).
F. Remove the ball (3).
G. Push the stem (6) down through the body (1), and then remove the o-ring (9) and thrust washer (8)
H. Remove the bushing (11) and packing (10) from the body.
Assembly
A. Rebuild the valve by using all the replacement parts of the rebuild kit.
B. Ensure that all parts are clean and undamaged.
C. Assemble the valve in reverse order of the disassembly instructions, except install the packing after
D. Use the body bolt tightening steps listed in the installation instructions and tighten according to the
It is recommended to cycle and test the valve prior to resuming service. After reinstallation into the piping system,
it may be necessary to adjust the stem nut/packing gland as described in step 3.
DOC: IOM_FNW310(1)AM_ ver_4-2011 Page 3 of 6
valve may be deformed.
stopper (22) off the stem. Remove the stop-lock-cap (15), stem nut (14), Belleville washers (13) and
gland (12).
from the stem.
the stem is inserted.
torques listed in Table 1.
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
FIGURE 310AM, 310AMSW & 311AM 3-PIECE BALL VALVE
11 12 13 14
10
9
8
7
5
4
6
3
2
1
L2
Ls
L
15
16
18
17
HEX.B
Ød
M
H A
Lm
Bod Bolts
Sizes 1/4"~2 1/2"
Lm
Body Bolts
Sizes 3" & 4"
23
DOC: IOM_FNW310(1)AM_ ver_4-2011 Page 4 of 6
21
22
Handle Assembly
Size 4"
20
19
INSTALLATION, OPERATION & MAINTENANCE INSTRUCTIONS
FIGURE 310AM, 310AMSW & 311AM 3-PIECE BALL VALVE
No.
1 Body
2 End Cap
3 Ball 316SS Stainless 1
4 Seat RTFE 2
5 Body Gasket PTFE 2
6 Stem 316SS Stainless 1
7 Anti-Static Device 316SS Stainless 2
8 Thrust Washer PTFE 1
9 O-Ring FKM 1
10 V-Ring Packing PTFE
11 Bushing 50% Stainless + 50% PTFE 1
12 Gland 316SS Stainless 1
13 Belleville Washer 301SS Stainless 2
14 Stem Nut ASTM A194-8 Stainless 1
15 Stop-Lock-Cap 304SS Stainless 1
16 Bolt Washer
17 Bolt Nut
18 Body Bolt
19
20 Pipe Handle 4” ASTM A53 Steel + Zinc Plating 1
21 Set Screw 4” ASTM A193-B8 Stainless 1
22
23 Handle Sleeve 4” Vinyl Plastic 1
Description
Handle
Adapter
Triangle
Stopper
310AM 311AM
ASTM A351 Gr. CF8M
Stainless
NPT
SW
1/4”~2” 4
2-1/2” 8
3”~4”
1/4”~2” 4
2-1/2” 8
3”~4”
1/4”~3” 4
4”
4” ASTM A351 Gr. CF8 Stainless 1
4” 420SS Stainless 1
ASTM A351 Gr. CF8M
Stainless
ASTM A351 Gr. CF3M
Stainless
ASTM A193-B8 Stainless
Material Ref.
ASTM A216 Gr. WCB Carbon
ASTM A216 Gr. WCB Carbon
304SS Stainless
ASTM A194-8 Stainless
Steel
Steel
Qty
1
2
1
Set
12
12
6
DOC: IOM_FNW310(1)AM_ ver_4-2011 Page 5 of 6
Loading...