Sharpe N66 Series Manuale utente
2701 Busse Road Elk Groove Village, IL. 60007 Tel. 708-562-9221
IM-N66-0
August 8, 2013
Page 1 of 5
Installation,Operation,andMaintenanceManual
SeriesN66TubeFullPort3PieceBallValves
Sizes 1” – 4”
2701 Busse Road Elk Groove Village, IL. 60007 Tel. 708-562-9221
IM-N66-0
August 8, 2013
Page 2 of 5
SAFETY INSTRUCTIONS:
1. Read this Installation, Operation and Maintenance Manual before using the valve.
2. Sharpe Valves cannot anticipate all the situations a user may encounter while installing and
using the Sharpe Valve. The user must know and follow all applicable industry specifications
on the safe installation and use of these valves. Only qualified personnel or technicians who
are trained for maintenance work and have read the instructions are to assemble and
disassemble the valve. Misapplication of the product may result in injuries or property
damage.
INSTALLATION:
1. Before installing the valves, the interconnecting pipes or fittings must be fully aligned.
Make sure tri-clamp ends and seals are clean and are undamaged.
2. These valves may be installed in any position using good pipe fitting practices.
Hygienic clamp tube fittings in accordance with ASME BPE 2009 dimensions and
tolerances.
MANUAL OPERATION:
The valve is opened and closed by turning the handle ¼ turn (90°). Turning the handle
clockwise closes the valve (handle perpendicular to pipeline). Turning the handle
counterclockwise opens the valve (handle parallel to pipeline).
AUTOMATED OPERATION:
Valves with Actuators should be checked for alignment of the actuator to the valve.
Angular or parallel misalignment may result in high operational torque, and potential
damage to the stem seals or stem.
STEM SEAL ADJUSTMENT:
Stem seal leakage may be corrected without disassembly. If leakage is evident in stem
packing area, tighten the adjusting nut 1/4 turn. If leakage persists, repeat above.
Replacement of stem seals is indicated if the leak is still apparent after 1/2 turn.
DISASSEMBLY:
-CAUTION-
If the Valve has been used to control hazardous media, it must be decontaminated before
disassembly.
2701 Busse Road Elk Groove Village, IL. 60007 Tel. 708-562-9221
IM-N66-0
August 8, 2013
Page 3 of 5
---WARNING---
Do not attempt to repair or partially disassemble a valve while it is in line and under pressure.
Isolate the line, de-pressurized, and remove valve prior to performing maintenance.
1. Turn valve to open position and remove the handle nut, lock washer, and handle.
2. Remove lock tab, stem nut, Belleville springs, and gland ring.
3. Loosen the body bolts, remove the end caps, body bolts, seals, and seats.
4. To take out the ball, rotate stem so ball is in fully closed position. Carefully lift ball off
stem tang and from body with a “rolling” motion. Note: Extreme caution should be
taken to avoid damage to the ball.
5. Push the stem downwards and slide it out from the body. The thrust bearing should
come out with the stem. Then remove the stem packing.
VISUAL INSPECTION:
1. Clean and inspect all metal parts. Replace the ball and/or stem if the seating or sealing
surfaces have been damaged, worn, or corroded.
2. Stem seals, seats, and body seal must be replaced whenever the valve is
disassembled to avoid seal leakage and ensure proper performance. Use only Sharpe
Valves replacement parts.
ASSEMBLY:
Note: The valve may be assembled and operated dry where no lubricants are allowed in the
system; however, a light lubrication of mating parts will aid in assembly and reduce initial
operating torque. Lubricant used must be compatible with the intended line fluid.
1. Install thrust bearing on stem and slide the stem up through the body.
2. Install new stem seals, gland ring, and belleville springs. Install gland nut and tighten
using the torque values given in Table 1.
2701 Busse Road Elk Groove Village, IL. 60007 Tel. 708-562-9221
IM-N66-0
August 8, 2013
Page 4 of 5
Table 1 - Gland Nut Torques
GLAND NUT TIGHTENING TORQUE
Valve Size Torque (in-lb)
1/2 35
3/4 80
1 80
1 1/2 115
2 115
2 1/2 250
3 250
4 250
3. Install the lock tab, the handle, washer and handle nut. Make sure the handle aligns
with the flow bore through the valve.
4. Turn the handle to the CLOSED position. Line up the ball slot with the stem tang and
install the ball into position on the stem tang. Turn the handle to the OPEN position to
hold the ball in place.
5. Install the seats with the spherical curvature facing the ball.
6. Place new body seal into the groove in valve body.
7. Install the end caps and body bolts, washers and body nuts. Tighten the bolts to the
torque below.
BODY BOLTS TIGHTENING TORQUE FOR N66 (in-lb)
Valve Size Bolt Diameter Ist Pass Final Pass
1/2 M6 40 80
3/4 M8 100 160
1 M8 100 160
1 1/2 M10 200 345
2 M10 200 345
2 1/2 M12 210 345
3 M16 340 460
4 M16 340 460
8. Cycle the valve open and close several times slowly to ensure that the operation is
smooth and free of binding or sticking.
9. Pressure test valve, if possible, before reinstalling in pipeline.
2701 Busse Road Elk Groove Village, IL. 60007 Tel. 708-562-9221
IM-N66-0
August 8, 2013
Page 5 of 5
TESTING:
---WARNING---
Valve must be properly secured during testing. Fixture flanges for testing should be the
same rating as the valves.
A. Secure valve to a test fixture with a suitable gasket. Orient the valve so the seat
to be tested is facing up.
B. Apply 80 to 100 psig air into the end of the closed valve which is attached to the
fixture. Pour water into the upper port to cover the ball and visually check for
bubbles. If bubbles are coming out, cycle the valve several times and recheck.
To check for leakage in the other port, reverse the valve and repeat the process.
C. In the event of stem seal leakage, adjust as described under paragraph, “Stem
Seal Adjustment”.
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