King instrument 7450 series User manual

(714) 891-0008 • www.kinginstrumentco.comWhen it comes to ow...we’re instrumental. 1

7450 Series Installation Instructions

FLOW METER LIMITED WARRANTY

Meters are warranted against defects in materials and workmanship to the original user for a period of thir-

teen (13) months from the date of factory shipment, provided the meter is installed, operated and maintained

in accordance with King Instrument Company’s instructions and recommendations.

This warranty does not apply if failure is caused or contributed to by any of the following: improper handling,

improper storage, abuse, unsuitable application of the product, lack of reasonable and necessary mainte-

nance, use exceeding suggested pressure and temperature maximums, improper packaging for return, or

repairs made or attempted to be made by anyone other than King Instrument Company, Inc.

KING INSTRUMENT COMPANY, INC. MAKES NO WARRANTY AS TO THE FITNESS OF ITS PRODUCTS FOR SPECIFIC

APPLICATIONS.

This warranty is valid for the original end-user only and does not apply to products that have been damaged

or modied. This warranty is non-transferrable and is limited to replacement or repair. The liability of King In-

strument Company arising out of its supply of the products, or their use, shall not in any case exceed the cost

of correcting defects in the products as set forth above.

THIS WARRANTY IS A LIMITED WARRANTY AND SHALL BE IN LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR

IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A

PARTICULAR PURPOSE. THERE ARE NO OTHER WARRANTIES WHICH EXIST BEYOND THE DESCRIPTION OR FACE

HEREOF.

IN NO EVENT SHALL KING INSTRUMENT COMPANY BE LIABLE FOR LOSS OF PROFITS, INDIRECT, CONSEQUEN-

TIAL OR INCIDENTAL DAMAGES.

Products should be returned, prepaid, to King Instrument Company, Inc. with proof of purchase. Call factory

for Return Merchandise Authorization (RMA) number and return instructions.

THIS IS IMPORTANT INFORMATION.

READ IT CAREFULLY BEFORE BEGINNING WORK.

1) Inspect meter for damage that may have occurred during shipping.

Report any damage to the container to the freight carrier immediately.

2) Make sure your pressure, temperature, uid 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 ow 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) 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.

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 contrac-

tion and possible uid leaks at the threaded connections.

4) Handle the meter carefully during installation.

a) Use an appropriate amount of teon 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.

6) Meters with stainless steel ttings will support several feet of pipe

as long as signicant vibration or stress resulting from misaligned pipe

are not factors.

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 out-

let should be used to create back pressure as required to prevent oat

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 instal-

lations. Remember: To get a correct reading of ow 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.

(714) 891-0008 • www.kinginstrumentco.comWhen it comes to ow...we’re instrumental. 2

CAUTION

• 7450 Series meters have o-ring seals. Use with incompatible uid-

may cause o-rings to swell which may cause glass tube to fail.

• 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.

CLEANING

Carefully remove the owmeter from the piping system. Remove the

front and back shield. Remove the end ttings using a 7/8” wrench. Us-

ing a 3/16” hex key, back o the compression screw by turning counter

clockwise. This will release the compression of the glass tube. Carefully

remove the screws that hold the outlet block. Remove the outlet block

and internals. Remove glass tube.

Valve Models: Remove valve from the bottom block using a 7/8” open

ended wrench. Disassembly of valve is not recommended. Outer valve

o-ring should be replaced during meter maintenance and cleaning.

All components are now fully accessible for cleaning. Components can

be cleaned with a mild soap solution. This will be an eective cleaner

of rust stains. A bottle brush 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, position the glass tube on the bottom block and

center onto bottom gasket. Insert oat, if on a guide rod make sure

the bottom end of the guide rod is inserted into the center hole of the

bottom oat stop. Re-install the outlet block. Using a 3/16” hex key turn

compression screw counterclockwise while keeping the glass tube

centered between the bottom and top gaskets. Re-install end ttings,

valve and shields.

REPAIR

7450 meters that require repair should be sent to the factory. Please

call for a Return Merchandise Authorization (RMA) number and return

instructions.

WARNING:

Pressure and temperature ratings are based on a study of the engi-

neering 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 dicult

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 specic application.

FLOAT TYPES AND ORIENTATIONS

7450 Series Installation Instructions

Maximum Non-Shock Pressure and Temperature

Temperature Pressure

200° F 200 psig

Ambient Temp. 33° F -125° F

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.

7450 meters that require repair should be sent to the factory. Please call for a

Return Merchandise Authorization (RMA) number and return instructions.

-7450 Series meters have o-ring seals. Use with incompatible fluids may cause

o-rings to swell which may cause glass tube to fail.

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.

6) 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

Non-valve

Inlet / Outlet Valve

4,000 psig

1,500 psig

Maximum Non-Shock

Pressure and

Temperature O-Ring Temperature

Ambient

temperature 33° F - 125° F

Viton and Kalrez are registered trademarks of DuPont Dow

Elastomers.

O-Ring Material Maximum

Temperature 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.

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.

LP FLOAT

Maximum flow

meter capacity

with limited

viscosity immunity

OUTLET END FITTING

O-RING

COMPRESSION FITTING

COMPRESSION SEAT

INLET SEAL

INLET FLOAT STOP /

INLET END FITTING

SIDE PLATE /

SIDE PLATE

SCALE SIDE PLATE

OUTLET SEAL

OUTLET FLOAT STOP

FLOAT STOP /

FLOAT

GLASS METER TUBE

SHIELD (CLEAR)

SHIELD (WHITE)

END FITTING

END FITTING NUT

SCALE BRACKET

SCALE PLATE

VALVE ASSEMBLY

OUTLET END FITTING

O-RING

COMPRESSION FITTING

COMPRESSION SEAT

INLET SEAL

INLET FLOAT STOP /

INLET END FITTING

SIDE PLATE /

SIDE PLATE

SCALE SIDE PLATE

OUTLET SEAL

OUTLET FLOAT STOP

OUTLET FLOAT STOP /

FLOAT

GLASS METER TUBE

SHIELD (CLEAR)

SHIELD (WHITE)

END FITTING

END FITTING NUT

SCALE BRACKET

SCALE PLATE

BLOCK

EXTENSION ASSEMBLY

BLOCK

SHIELD SCREW

HOLDER

EXTENSION ASSEMBLY

SCREW

BLOCK

EXTENSION ASSEMBLY

BLOCK

SHIELD SCREW

HOLDER

EXTENSION ASSEMBLY

SCREW

GV FLOAT

Highest immunity

to viscous fluids

with medium

capacity.

SL FLOAT

Maximum flow

meter capacity

with limited

viscosity immunity

4X 4X

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

back shield. Remove the end fittings using a 78" wrench. Using a 316" hex key,

back off the compression screw by turning counter clockwise. This will release

the compression of the glass tube. Carefully remove the screws that hold the

outlet block. Remove the outlet block and internals. Remove glass tube.

Valve Models: Remove valve from the bottom block using a 78" open ended

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

replaced during meter maintenance and cleaning.

To reassemble, position the glass tube on the bottom block and center onto

bottom gasket. Insert float, if on a guide rod make sure the bottom end of the

guide rod is inserted into the center hole of the bottom float stop. Re-install the

outlet block. Using a 316" hex key turn compression screw counterclockwise while

keeping the glass tube centered between the bottom and top gaskets. Re-install

end fittings, valve and shields.

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 bottle brush 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.