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When it comes to flow...we’re instrumental.
3
7710 Series
Installation Instructions
PARTS LIST:
SHIELD RETAINER
1
SHIELD GASKET
2
SHIELD
3
4
5
6
7710 SERIES ASSEMBLY
Pressure and temperature ratings are based on a study of the engineering
data for particular materials used in construction and on the design of
individual models. This information is supplemented by destructive test
results. Meters with stainless enclosures must never be operated without
shields securely in place. Meters exposed to difficult environments such
as those created by certain chemicals, excessive vibration or other stress
inducing factors could fail at or below the suggested maximums. Never
operate meters above pressure and temperature maximums. It is strongly
recommended that all meter installations utilize an appropriate pressure
relief valve and/or rupture disc. The pressure settings and locations of
these devices should be such that meters cannot be over pressurized.
Meter failure could result in damage to equipment and serious personal
injury. Always use suitable safety gear, including OSHA approved eye
protection when working around meters in service. We are happy to pass
along chemical compatibility information that has been published by the
manufacturer's of raw materials used in our products; however, this
information should not be construed as a recommendation made by King
Instrument Company, Inc. for a specific application.
Carefully remove the flowmeter from piping system. Remove the threaded
outlet end fitting and withdraw the float from the top. All necessary
instrument components are now fully accessible for cleaning with a bottle
brush and appropriate mild soap solution*. Before the meter is
reassembled, inspect all parts for damage. O-rings should be replaced
during meter maintenance and cleaning.
WARNING:
CLEANING:
To reassemble, carefully guide the magnetic float back into the tube.
Reinstall and tighten outlet end fitting. Reinstall the instrument into the
plumbing system after removing the old teflon tape (with a wire brush) and
replacing with fresh teflon tape.
*Do not use cleaning agents that will damage float, tube or o-rings.
Meters should be cleaned with a mild soap solution. This will be an
effective cleaner of rust stains. Caution must be used so that materials of
construction are not damaged by cleaning solutions. Hard water deposits
can be removed with 5% acetic acid solution (vinegar).
7710 meters that require repair should be sent to the factory. Please call
for a Return Merchandise Authorization (RMA) number and return
instructions.
REPAIR:
CAUTION:
-O-rings should be replaced if meter is disassembled after it has been in
service.
-Serious property damage and great personal injury could occur as the
result of a meter misused or used in an unsuitable application.
1) Inspect meter for damage that may have occurred during shipping. Report
any damage to the container to the freight carrier immediately.
This is important information. Read it carefully
before beginning work.
3) Make sure your pressure, temperature, fluid and other requirements are
compatible with the meter and components (including o-rings).
4) Select a suitable location for installation to prevent excess stress on the
meter which may result from:
a) Misaligned pipe.
b) The weight of related plumbing.
c) "Water Hammer" which is most likely to occur when flow is suddenly
stopped as with quick closing solenoid operated valves. (If necessary, a
surge chamber should be installed. This will also be useful in pressure
start-up situations.)
d) Thermal expansion of liquid in a stagnated or valve isolated system.
e) Instantaneous pressurization which will stress the meter and could result
in tube failure.
NOTE: In closed thermal transfer or cooling systems, install the meter in the
cool side of the line to minimize meter expansion and contraction and possible
fluid leaks at the threaded connections.
5) Handle the meter carefully during installation.
a) Use an appropriate amount of teflon tape on external pipe threads before
making connections. Do not use paste or stick type thread sealing products.
6) Install the meter vertically with the inlet port at the bottom. No piping runs
are required. Because the guide rod extends from the top of the meter during
operation, 4" of straight pipe must be provided at the outlet of the meter.
7) Meters with stainless steel fittings will support several feet of pipe as long
as significant vibration or stress resulting from misaligned pipe are not factors.
EPR
225 °F
Buna-N
Viton
Kalrez
275 °F
350 °F
400 °F
Maximum Non-Shock
Pressure and Temperature
O-Ring Temperature**
**CAUTION: Meters with NPT (threaded) connections can be used in
service up to 1,500 psi and 400°F, but always make certain that materials
of construction (including O-Ring material) are compatible with the fluid to
be metered at the desired temperature and pressure.
O-Ring
Material
Maximum
Temperature
7
8
9
10
11
12
INDICATOR HOUSING/
POINTER NEEDLE SET SCREW
FLOAT
END FITTING O-RING
OUTLET END FITTING
ORIFICE HOUSING O-RING
ORIFICE HOUSING/
OUTLET FLOAT STOP
Stainless Steel Flange Class
300#
psig
150#
psig
600#
psig
°F
Temp.
600
225
1,200
200
540
200
1,100
300
515
180
1,000
400
The maximum ambient
temperature for the indicator
housing is 400°F.
Viton and Kalrez are registered trademarks of DuPont Dow Elastomers.
-Do not loosen nuts that fasten indicator housing to metering tube. If the
relationship of meter tube and indicator housing are changed, meter must
be calibrated.
10
9
8
7
3
2
1
10
9
11
12
11
6
5
15
FLANGE
FNPT
11
13
11
METER TUBE ASSEMBLY
ORIFICE ASSEMBLY
HOUSING ASSEMBLY
13
TAPER SLEEVE
14
INLET END FITTING
INLET FLOAT STOP
HOUSING ASSEMBLY
12
11
15
FLANGE
1
1
1
1
CONFIGURATIONS VARY BY FLOW RATE AND METER SIZE.
1
FNPT
1
2) Remove any shipping material placed in the inlet and outlet of the meter.
(This is done to prevent damage caused by movement of the float during
shipping).
OVERALL
DIMENSIONS:
706-714
715-722
724-726
728-734
Ø1.88
11.000
Ø1.30
13.240
B
A
Dim.
1/2"
1"
C*
Ø2.34
13.864
1-1/2"
Ø3.46
13.875
2"
4.32
4.86
D
5.24
6.35
736-738
-
3"
7.26
740-744
-
4"
8.24
*FNPT / FLANGE CONNECTION
3.92
4.50
E
4.96
6.08
7.08
8.11
13.125 /
16.750 /
F**
18.625 /
17.156 /
17.867 /
18.562 /
G** 3.50/3.75 4.25/4.88 5.00/6.12 6.00/6.50 7.50/8.25 9.00/10.00
**150# / 300#
13.625
17.500
19.250
17.786
18.867
19.696
8) Meters used in gas service should have suitable valves plumbed in at the
inlet and outlet of the meter. These valves should be no more than 1-1/2 pipe
diameters from the meter ports. The valve at the outlet should be used to
create back pressure as required to prevent float bounce. It should be set
initially and then left alone. The inlet valve should be used for throttling
purposes. Depending on the installation, valves may not be essential, but they
are most useful in many installations. Remember: To get a correct reading of
flow in gas service, it is necessary to know the pressure right at the outlet of
the meter (before the valve).
ADDITIONALLY:
-7710 Series meters are designed for vertical installation only. (Inlet at bottom,
Outlet at top)
-Do not remove or adjust the screws on the back of the indicator housing.
These screws were positioned during factory calibration and represent the
zero adjustment. If the pointer is set on zero, proceed with installation. If the
pointer is not set at zero, follow these steps:
Caution: Zero is factory set when meter is calibrated.
DO NOT loosen screws that fasten indicator housing to
meter body. If indicator housing is moved, the meter
will need to be calibrated.
1) Remove front cover with gasket and shield from indicator housing.
2) Loosen set screw at the base of the pointer hub.
3) Reposition pointer to zero line.
4) Tighten set screw with a
1
16
" allen wrench by holding the pointer hub and
gently tightening the set screws.
5) Replace front cover with gasket and shield on indicator housing.
11
14
11
13
11
9
www.kinginstrumentco.com
7700 SERIES FLOWMETER
King Instrument Company
Garden Grove, CA
Made in U.S.A.
www.kinginstrumentco.com
7700 SERIES FLOWMETER
King Instrument Company
Garden Grove, CA
Made in U.S.A.
B
A
D
E
Ø4.80
F
G
C
4.87
Ø4.46
Ø5.49
15
SHIELD RETAINER O-RING
9
4
7710 SERIES ASSEMBLY
PARTS LIST:
1. Shield Retainer
2. Shield Gasket
3. Shield
4. Shield Retainer O-Ring
5. Indicator Housing/
Meter Tube Assembly
6. Pointer Needle Set Screw
7. Float
8. Outlet Float Stop Housing
Assembly
1
9. End Fitting O-Ring
10. Outlet End Fitting
11. Orifice Housing O-Ring*
12. Orifice Housing/
Orifice Assembly
1
13. Inlet Float Stop
Housing Assembly
1
14. Taper Sleeve
1
15. Inlet End Fitting
1
Configurations vary by flow
rate and meter size.
