7430 series, Installation instructions – KING 7430 Series PVC_PVDF User Manual

Page 3

(714) 891-0008 • www.kinginstrumentco.com

When it comes to flow...we’re instrumental.

Installation Instructions

7430 series asseMbly non-ValVe
Parts list:

1. Top Frame Plug
2. Frame
3. End Fitting Screw
4. Outlet End Fitting
5. Retaining Nut
6. Inlet End Fitting
7. O-Ring
8. Compression Screw
9. Seat Bushing
10. Glass Tube Gasket

11. Tube Adaptor
12. Float Stop
13. Float
14. Glass Meter Tube
15. End Fitting Plug
16. Scale Plate Mount Screw
17. Scale Plate Mount
18. Scale Plate Screw
19. Scale Plate
20. Shield

7430 series asseMbly inlet ValVe

oulet valve similar

Parts list:

1. Top Frame Plug
2. Frame Assembly
3. End Fitting Screw
4. Outlet End Fitting
5. Retaining Nut
6. Inlet End Fitting
7. O-Ring
8. Compression Screw
9. Seat Bushing
10. Glass Tube Gasket
11. Tube Adaptor

12. Float Stop
13. Float
14. Glass Meter Tube
15. Scale Plate Mount

Screw

16. Scale Plate Mount
17. Scale Plate Screw
18. Scale Plate
19. Valve Assembly
20. Shield Spacer
21. Shield

TOP FRAME PLUG

O-RING

GLASS TUBE GASKET

GLASS METER TUBE
SCALE PLATE MOUNT

SCALE PLATE MOUNT

SEAT BUSHING

COMPRESSION SCREW

TUBE ADAPTOR
FLOAT STOP
FLOAT

SCALE PLATE

SHIELD

FRAME ASSEMBLY

SCALE PLATE SCREW

RETAINING NUT

END FITTING SCREW
OUTLET END FITTING

INLET END FITTING

VALVE ASSEMBLY
SHIELD SPACER

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.

To minimize down time, 7430 Series metering tubes are designed to be removed

without uninstalling flowmeter from piping system. Meter should be drained prior

to maintenance.

7430 meters that require repair should be sent to the factory. Please call for a

Return Merchandise Authorization (RMA) number and return instructions.

-7430 Series meters have o-ring seals. Use with incompatible fluids may cause

o-rings to swell which may cause glass tube to fail.
-Plastic fittings are not suitable for gas applications.

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.

2) Make sure your pressure, temperature, fluid and other

requirements are compatible with the meter including o-rings.
3) 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.

f) 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.

4) 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.

5) Install the meter vertically with the inlet port at the bottom.

Meters are not specifically recommended for service other than

water or air. The user must determine meter suitability for use

with other fluids.

e) It is recommended to install valving which will allow the meter to

be drained. Meter should be drained when not in use or prior to

maintenance.

b) Over tightening of plastic connections may result in fitting

damage.

6) Meters with plastic fittings must be installed so that fittings are not

made to support any part of the associated plumbing. In addition,

meter frame should be fastened to bulkhead, panel or column.
7) 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).
8) Pressure and temperature maximums must never be exceeded.

-Extra caution must be exercised when meters are used in high pressure gas

cylinder applications. Pressure regulators should be installed at the cylinder and

at the inlet of the meter.

-Serious property damage and great personal injury could occur as the result of a

meter misused or used in an unsuitable application.

BL FLOAT

Lowest meter

capacity or

medium capacity

with low viscosity

fluids

TOP FRAME PLUG

O-RING

GLASS TUBE GASKET

GLASS METER TUBE
END FITTING PLUG
SCALE PLATE MOUNT

SCALE PLATE MOUNT

SEAT BUSHING

COMPRESSION SCREW

TUBE ADAPTOR
FLOAT STOP
FLOAT

SCALE PLATE
SHIELD

FRAME

SCALE PLATE SCREW

RETAINING NUT

END FITTING SCREW
OUTLET END FITTING

INLET END FITTING

SCREW

Maximum Non-Shock

Pressure and

Temperature

O-Ring

Temperature

Viton and Kalrez are registered trademarks of DuPont Dow

Elastomers.

EPR

225 °F

Buna-N

Viton

Kalrez

275 °F

350 °F

400 °F

130 psig

Ambient

temperature

33° F - 125° F

O-Ring

Material

Maximum

Temperature

200°F

130°F

150 psig

Temperature

Pressure

Carefully remove the flowmeter from the piping system. Remove the front shield

and the top frame plug. Insert a

" hex key through the top hole of the frame and

into the compression screw. Turn the hex key counter clockwise until the

compression screw is raised enough to be able to remove the glass tube.

Carefully remove the glass tube. Remove the compression screw by turning the

hex key clockwise. Float and float stops may be removed by inserting a rod into

one end of the glass tube and carefully pushing the components out the other

end.

All components are now fully accessible for cleaning. Components can be

cleaned with a mild soap solution. This will be an effective cleaner of rust stains.

A cotton swab may be helpful in cleaning the inside of the glass tube. Caution

must be used so that materials of construction are not damaged by cleaning

solutions. Hard water deposits can be removed with a 5% acetic acid solution

(vinegar). Before the meter is reassembled, inspect all parts for damage. O-rings

should be replaced during meter maintenance and cleaning.
To reassemble, insert bottom float stop into glass tube and push it down with a

rod. Insert the ball float and top float stop. Install the compression screw with the

" hex key, turning counter clockwise. Install the gaskets, seat bushing, and tube

adapters (

" float models only). Position glass tube in frame assembly and begin

to turn the compression screw clockwise. Make sure that the tube is centered and

that the reference line is facing frontward. Tighten compression screw to 4 in. lbs.

of torque. Re-install the frame orifice plug. Re-install valve assembly or valve

orifice plug. Replace shield by snapping it into place.

Valve Models: Remove valve from the bottom end fitting using a

" open ended

wrench. Disassembly of valve is not recommended. Outer valve o-ring should be

replaced during meter maintenance and cleaning. Prior to reinstalling valve, apply

blue Loctite to valve threads and a silicone based lubricant onto o-rings.

Non-Valve Models: Remove valve orifice plug from bottom end fitting by inserting

" hex key through the back of the end fitting and into the plug. Turn clockwise

to remove it.

-OUTLET VALVE SIMILAR

PVDF

PVC