Power Flame K7 User manual
Power Flame Incorporated
K7 Metering
Valve
Installation and
Operation Manual
POWER FLAME K7 METERING VALVE
For use by Qualified Service Personnel Only
Rev. 0
Pending MH15565
WARNING
The improper installation, adjustment, alteration, service or maintenance
of this equipment can result in fire, explosion, serious injury, or death.
Strict adherence to the National Fire Protection Code (NFPA), along with
any and all local codes. Refer to this manual. For assistance or
additional information consult the factory, a qualified installer or service
agency.
K7 Metering Installation & Operation Manual - POWER FLAME INCORPORATED
1. GENERAL PRODUCT INFORMATION 1
1.1 Principle of operation 1
1.2 Model Identification 1
2. CAPACITIES 2
2.1 Valve Flow Rates 2
2.2 Valve Flow Curves 2
2.3 Selection 7
3. INSTALLATION AND MOUNTING 8
3.1 Dimensions 8
3.2 Installation and Mounting 9
4. OPERATION 9
5. MAINTENANCE 9
6. WARRANTY 10
1
1. GENERAL PRODUCT INFORMATION
1.1 Principle of operation
1.1.1 The Power Flame K7 metering valve is listed and labeled by Underwriters Laboratories, Inc. for use
with #2 fuel oils at a maximum pressure of 300 PSI. This valve is available in different models to
best match to the desired fluid flow rate for the application. It is unique in that it can rotate CW or
CCW, offering a wider variety of linkage arrangement possibilities. A graduated dial and pointer is
provided as reference to the physical position of the flow metering mechanism. Full flow is reached
at the “OPEN” position. Flow decreases as the dial moves toward the “CLOSED” position. This
valve is not intended to replace a safety shutoff valve.
1.2 Model Identification
1.2.1 All metering valve model numbers begin with K7-.
1.2.2 The numeric value immediately following the model number designates the valve body size which
corresponds to its diameter in inches (3 = 3”).
1.2.3 The numeric value immediately following the valve body size indicates the maximum flow at full
open position with a 25 PSIG pressure drop across the valve. This value is factory-stamped onto
the label. The values listed below are in gallons per hour (GPH).
a. -0 = 4
b. -1 = 14
c. -2 = 23
d. -3 = 34
e. -4 = 47
f. -5 = 63
g. -6 = 133
h. -7 = 176
i. -8 = 230
1.2.4 Any subsequent suffixes (such as A, B, etc.) to the model number are reserved for future use
(consult factory).
3
K7
-
1
Body Size
Flow Rate Indication
-
Valve Name
2
2.0 CAPACITIES
2.1 Valve Flow Rates
2.1.1 The following tables illustrate the flow at full open position of each valve at the pressure drop
indicated in the table.
Table 1: Full Open Position Flow Rates in Imperial Units
Table 2: Full Open Position Flow Rates in SI Units
2.2 Valve Flow Curves
2.2.1 The following charts illustrate the flow at the noted valve positions.
Model 1 10 25 50 75 100
Number Cv
K7-3-0 0.013 0.8 2.6 4.1 5.8 7.1 8.2
K7-3-1 0.043 2.8 8.9 14.1 19.9 24.4 28.2
K7-3-2 0.07 4.5 14.4 22.7 32.1 39.3 45.4
K7-3-3 0.105 6.8 21.6 34.1 48.2 59.1 68.2
K7-3-4 0.146 9.5 29.9 47.3 66.9 81.9 94.6
K7-3-5 0.192 12.5 39.5 62.5 88.4 108.3 125.0
K7-3-6 0.408 26.5 83.9 132.7 187.7 229.8 265.4
K7-3-7 0.543 35.3 111.6 176.4 249.5 305.5 352.8
K7-3-8 0.703 45.7 144.6 228.6 323.3 395.9 457.2
Pressure Drop Across Valve in PSIG
#2 Oil Capactiy (GPH) @ Open Position (0.85 S.G., 60°F)
Model 6.9 68.9 172.4 344.7 517.1 689.5
Number Cv
K7-3-0 0.013 3.1 9.8 15.5 21.9 26.9 31.0
K7-3-1 0.043 10.7 33.8 53.4 75.5 92.4 106.7
K7-3-2 0.07 17.2 54.3 85.9 121.5 148.8 171.9
K7-3-3 0.105 25.8 81.6 129.1 182.5 223.6 258.2
K7-3-4 0.146 35.8 113.2 179.0 253.2 310.1 358.1
K7-3-5 0.192 47.3 149.6 236.6 334.6 409.8 473.2
K7-3-6 0.408 100.5 317.7 502.3 710.4 870.0 1,004.6
K7-3-7 0.543 133.5 422.3 667.7 944.3 1,156.6 1,335.5
K7-3-8 0.703 173.1 547.3 865.3 1,223.8 1,498.8 1,730.7
Pressure Drop Across Valve in kPa
#2 Oil Capactiy (LPH) @ Open Position (0.85 S.G., 15.5°C)
3
4
5
6
7
2.3 Selection
2.3.1 The most optimum valve selection is the one that has the desired high fire flow rate at the greatest
valve position number, typically 9. Using the charts, find the curve that is closest to the desired
flow rate at position 9. This would be the ideal valve choice. If your flow rate falls between 2 curves,
the smaller model will typically give more control, but at a higher pressure drop than 25.
Example: If the desired flow rate is 26.0 GPH, the best choice would be the K7-3-2 valve, provided
there is enough pressure available. To determine the pressure drop of this valve at 26 GPH, the
following formula may be used:
2.3.2 The flow charts provided in this manual are at a 25 PSI/172.4 kPa drop. If a different pressure drop
is required, the flow rates will change. The following formula may be used to convert the chart’s
flow rates (Qchart) to the actual flow (Qactual).
8
3.0 INSTALLATION AND MOUNTING
3.1 Dimensions
3.1.1 The below illustration shows the dimensional details of the K7-3-X valve. A variety of mounting
brackets, servo coupling kits and linkage arms are available from Power Flame separately. Please
contact the factory for additional information.
Figure 1: Valve Dimensions
9
3.2 Installation and Mounting
3.2.1 Please examine the metering valve upon to ensure that it has arrived in good condition and that no
damage occurred during transit.
3.2.2 Bolt the metering valve to the desired mounting bracket as required. Placement should be such
that an operator can easily view the position indicator on the front of the valve. It is necessary on
linkage-type installations that the valve’s shaft is parallel to the actuator’s shaft to ensure the linkage
will not bind. This is not required on servo-driven installations; however, the installer must leave
adequate clearance to remove the actuator cover.
3.2.3 The inlet of the valve is denoted with an “I” stamped into the valve body. The outlet is denoted with
an “O” stamped into the valve body. All piping should be installed with high quality thread sealant.
Teflon tape is not allowable and shall never be used. Piping connections to the valve are 3/8” NPT
female and shall be torqued per ANSI standards for aluminum body connections. A large crescent
wrench or smooth-jawed pipe wrench must be placed across the body of the valve as near as
possible to the inlet/outlet opening that is being connected to avoid damaging the valve body and
internal valve components.
3.2.4 With the valve connected to the bracket, connect the linkage arm or actuator coupling to the valve
as required for your installation. Refer to the manual of the burner model the valve is installed on
for additional information.
4.0 OPERATION
4.0.1 The K7-3-X valve is rated for #2 fuel oil with a maximum fluid temperature of 125 °F (52 °C) up to
300 PSI (2068 kPa).
5.0 MAINTENANCE
5.0.1 Power Flame K7 metering valve is designed for maintenance free service. There is no need to
disassemble the valve, and attempting to do so will void the warrantee.
5.0.2 A 300 micron or better strainer shall be used upstream of the burner oil components, as close as
possible to the burner. This will ensure that large debris will not plug the valve.
10
P
Po
ow
we
er
r
F
Fl
la
am
me
e
I
In
nc
co
or
rp
po
or
ra
at
te
ed
d
L
Li
im
mi
it
te
ed
d
W
Wa
ar
rr
ra
an
nt
ty
y
Power Flame Incorporated, hereinafter called
the Seller, of 2001 South 21st Street, Parsons,
Kansas, hereby warrants its equipment
manufactured by it and bearing its nameplate
(hereinafter called Warranted Equipment) in the
respects and exclusively for the benefit of those
users, described herein. THIS LIMITED
WARRANTY SHALL EXTEND SOLELY TO
THOSE PERSONS WHO ARE OWNERS OF
THE WARRANTED EQUIPMENT DURING
THE WARRANTY PERIOD HEREINAFTER
DEFINED AND WHO USE SUCH
WARRANTED EQUIPMENT IN THE PROJECT
AND FOR THE PURPOSES FOR WHICH
SUCH WARRANTED EQUIPMENT WAS
ACQUIRED FROM THE SELLER. The Seller
warrants its equipment to be free from defects in
the material and workmanship under normal use
and service for fifteen (15) months from date of
shipment. Burner blast tube is warranted a full
five (5) years. EXCLUDED FROM ANY
COVERAGE UNDER THIS WARRANTY ARE
DEFECTS IN WARRANTED EQUIPMENT
FROM DAMAGE IN SHIPMENT, FAULTY
INSTALLATION, LACK OF PROPER
MAINTENANCE, CLOGGED OR DAMAGED
FILTERS, MISUSE OR NEGLIGENCE. If any
person becomes entitled to a claim under this
warranty, such person shall, as a condition
precedent to securing warranty performance,
return the Warranted Equipment to the Seller’s
plant, 2001 South 21st Street, Parsons, Kansas,
transportation prepaid. If the Warranted
Equipment thus returned is found by the Seller
to be defective for a cause and within a time
covered by this Warranty, such equipment shall
be repaired or replaced without charge; and
returned to its owner or job site at the Seller’s
cost for transportation and handling. If
inspection of the Warranted Equipment
discloses defects not covered by this Warranty,
the Seller shall notify the owner. Said
equipment, at the owner’s option (to be
determined thirty (30) days from the date of
notification), may be repaired or replaced at the
expense of the owner and Seller’s regular
charges shall apply. Owner shall assume the
cost for transportation and handling.
Equipment, which is repaired or replaced, shall
carry a warranty equal to the unexpired portion
of the original warranty. The Seller will
commence inspection of any Warranted
Equipment returned to it for warranty claim
within seven (7) working days after the arrival of
such Warranty Equipment at Seller’s plant, and
shall complete any repairs required under this
warranty within sixty (60) days after such arrival,
unless Seller shall sooner notify said owner of
reasonable cause for delay beyond control of
Seller. Warranty obligations hereunder will be
performed only between the hours of 9:00 a.m.
and 4:00 p.m. Monday through Friday and
excluding holidays. Any person believing
himself entitled to warranty performance
hereunder is required to notify the Quality
Assurance or Service Department of Power
Flame Incorporated, 2001 South 21st Street,
Parsons, Kansas, prior to return of any
Warranted Equipment for repair hereunder. IN
ALL EVENTS, SELLER WILL NOT BE LIABLE
FOR AND WILL NOT REIMBURSE ANY
LABOR, MATERIAL, OR OTHER REPAIR
CHARGES INCURRED BY ANYONE OTHER
THAN SELLER ON ANY WARRANTY
EQUIPMENT, UNLESS SUCH CHARGES
HAVE BEEN SPECIFICALLY AUTHORIZED IN
ADVANCE IN WRITING BY SELLER. ANY
WARRANTY IMPLIED BY LAW WITH
RESPECT TO THE MERCHANTABILITY OR
FITNESS OF THE WARRANTED EQUIPMENT
IS HEREBY LIMITED TO THE DURATION OF
THE WARRANTY PERIOD HEREUNDER.
THE SELLER WILL NOT IN ANY EVENT BE
LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES
ATTRIBUTABLE TO THE WARRANTED
EQUIPMENT.
P
Po
ow
we
er
r
F
Fl
la
am
me
e
I
In
nc
co
or
rp
po
or
ra
at
te
ed
d
2001 South 21st Street, Parsons, KS 67357
Telephone: 620-421-0480 FAX: 620-421-0948
Website: http://www.powerflame.com
e-mail: CSD@powerflame.com
Table of contents
