INSTALLATION & MAINTENANCE MANUAL
TOP-FLO
SERIES 77 HIGH PURITY BALL VALVE
IOM77.doc 1 08/28/02
1. USE:
1.1. Maximum results and long life of Series 77 Ball Valves can be maintained under normal working
conditions reflected within the pressure/temperature ratings and corrosion data chart.
2. MANUAL OPERATION:
2.1. The opening and closing of the valve is done by turning the handle a ¼ turn (90
°
).
A. Valve in OPEN position – the handle is in line with the valve body and piping.
B. Valve in CLOSED position – the handle is perpendicular to the valve body and piping.
3. DISASSEMBLY & CLEANING:
CAUTION:
NON CAVITY FILLED VALVES CAN TRAP FLUIDS IN THE BALL CAVITY
WHEN CLOSED.
3.1. If the valve has been used to control hazardous media, it must be decontaminated before disassembly.
A. Relieve the line pressure.
B. Place valve in half-open position and flush the line to remove any hazardous material from the
valve.
C. Turn handle back to the fully open position.
D. Loosen all bolts on the valve, but do not remove the nuts.
E. Remove the bolt on the opposite side of the bolt holding the center section of the main valve body.
F. Swing out center body section.
G. Turn handle ¼ turn to close valve.
H. Press on ball with fingers on one side to remove ball and seats.
I. Clean
accordingly.
J.
Re-assemble valve in reverse order.
K. See bolt tightening specifications for bolt torque values required.
Note:
Valve can also be CIP/SIP cleaned, but requires the valve to be open and closed several
times during this process.
CAUTION:
IN NON CAVITY FILLED VALVES, THERE IS A CHANCE OF ENTRAPMENT OF
CLEANING FLUID WITHIN THE BODY CAVITY.
4. GENERAL INFORMATION FOR INSTALLATION:
4.1. The valve can be installed in any position on the pipeline.
4.2. Prior to valve installation, the piping must be flushed clean of dirt, burrs, and welding residues or the
seats and ball surface may be damaged.
4.3. The piping must be free from tension.
5. INSTALLATION OF CLAMP VALVES:
5.1. Use the proper size and type clamp/gasket combination to achieve the proper pressure range and
performance for the application.
5.2. Place gasket into groove on valve end connection.
5.3. Mate the end connections with gasket with corresponding line connections and install desired type
clamps.
5.4. Tighten clamps accordingly to manufacturer specifications
