Re-assembly, Testing, Troubleshooting – Marwin Valve 4600F Series Brass Аква техника, 3 Piece Swing Out User Manual
Page 3: Body bolt torque valve table
Using a defective ball will be extremely detrimental
to valve performance.
Seats. Replacement of seats is recommended.
2.
Stem seals and body seals. Should be discarded
3.
and replaced.
Remaining components of the valve. After clean-
4.
ing, carefully examine for wear, corrosion and
mechanical damage. Replace all defective parts.
Clean inside of body and stem housing. Light
5.
grease, compatible with line fluid, can be used on
ball, seals and stem surface.
Note: A spare parts list is available for this valve.
Please refer to explosion view below for identifica-
tion. Please specify specific valve number to ensure
proper parts are ordered. Marwin Valve does not take
responsibility for incorrectly ordered spare parts.
Re-Assembly
A. Stem
Replace thrust washer (7) then insert the stem from
1.
inside the body.
Install stem packing (8), gland (9) and gland nut
2.
(10) and tighten until snug, then one-quarter turn.
Do not over-tighten. To avoid rotation of stem,
insert the handle and ball.
Install handle (11) and handle nut (13) then tighten.
3.
B. Ball, Seats and Seals
Place the stem in closed position and insert the
1.
ball, aligning groove in ball with bottom of stem.
Position the ball in the open position then insert the
2.
seats and body seals.
Testing
After completing the reassembly, check that valve
1.
operates smoothly by opening and closing valve
several times.
If entire valve was removed from line and if facili-
2.
ties area available, test the ball valve to appropri-
ate specifications.
Troubleshooting
A. Stem Leakage
You can eliminate leakage in the stem area by
1.
increasing the torque on the gland nut (10) in
one-quarter turn increments. If leakage persists,
replace stem packing (8).
B. Body Seal Leakage
Check the torque of the body bolts (2) according
1.
to Torque Table. Replace body seals (3) if leakage
persists. Replace stem packing (8).
C. In Line or Seats Leakage
Check to be sure valve is in fully closed position. If
1.
leakage persists, the valve must be disassembled
and damaged parts replaced.
Spare Parts List
Item #
Quantity
Part Name
3
2
Body Seal
4
2
Seat
7
1
Thrust Washer
8
1
Stem Packing
Insert the centerpiece between the end caps, re-
3.
install removed bolt and tighten all bolts and nuts
by hand.
Tighten bolts to recommended toque values using
4.
an alternating/opposing pattern with no more than
1/4 turn on each bolt before alternating.
Body Bolt Torque Valve Table
Valve Size
Body Bolt Torque (in/lbs)
1/4"
60
3/8"
150
3/4"
150
1"
150
1-1/4"
290
1-1/2"
290
2"
290
2-1/2"
325
3"
400
4"
400
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