INSTRUCTIONS
MCOV MICRO-CAM OIL VALVES
TABLE OF CONTENTS
Subject
A. General Information ……………………………………………………….…..….……. 2
B. Receiving and Inspection ………………………………………….…….…...…….….. 2
C. Capacities ………….……………………………………………………………………. 3
D. Dimensions …………….………………………………………………………………... 4
E. Installation ………….……………………………………………………………….…… 4
F. Operation…………………………………………………………………………………. 5
G. Maintenance …………………………………………………………………..………… 5
These instructions are intended to serve as guidelines covering the installation, operation, and maintenance of Hauck equipment. While
every attempt has been made to ensure completeness, unforeseen or unspecified applications, details, and variations may preclude
covering every possible contingency. WARNING: TO PREVENT THE POSSIBILITY OF SERIOUS BODILY INJURY, DO NOT USE OR
OPERATE ANY EQUIPMENT OR COMPONENT WITH ANY PARTS REMOVED OR ANY PARTS NOT APPROVED BY THE
MANUFACTURER. Should further information be required or desired or should particular problems arise which are not covered
sufficiently for the purchaser's purpose, contact Hauck Mfg. Co.
HAUCK MANUFACTURING CO., 100 North Harris Street Cleona, PA 17042 717-272-3051
10/13 www.hauckburner.com Fax: 717-273-9882
WARNING
These instructions are intended for use only by
experienced, qualified combustion start-up
personnel.
Adjustment of this equipment and its components,
by unqualified personnel, can result in fire,
explosion, severe personal injury, or even death.
Page
MCOV-9
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MCOV-9
WARNING
This equipment is potentially dangerous with the possibility of serious personal injury
and property damage. Hauck Manufacturing Company recommends the use of flame
supervisory equipment and fuel safety shutoff valves. Furthermore, Hauck urges rigid
adherence to National Fire Protection Association (NFPA) standards and insurance
underwriter’s requirements. Operation and regular preventative maintenance of this
equipment should be performed only by properly trained and qualified personnel.
Annual review and upgrading of safety equipment is recommended.
A. GENERAL INFORMATION
The Hauck Micro-Cam Oil Valve (MCOV) is designed to provide positive, accurate, graduated
control of fuel liquid flow to any type of burner. Flow control may be either manual or automatic.
A large indicator dial provides a greater range of individual precision settings. This valve is
specifically engineered to handle small to large oil capacities. B and F valves are UL listed for
assured quality.
The Hauck MCOV is intended for flow control; it is not designed to replace a shutoff valve.
For tight shutoff, a ball type or solenoid shutoff valve must be provided in the fuel supply line.
These valves will successfully and efficiently handle any grade of fuel oil, even heavy fuel oils,
when preheated to the proper viscosity and flow characteristics. Valves are specially designed
to reduce erosion from oil particulates. Liquid propane valves are also available.
B. RECEIVING AND INSPECTION
Upon receipt, check each item on the bill of lading and/or invoice to determine that all
equipment has been received. A careful examination of all parts should be made to ascertain if
there has been any damage in shipment.
If the installation is delayed and the equipment is
stored outside, provide adequate protection as
dictated by climate and period of exposure. Special
care should be given to all motors and bearings, if
applicable, to protect them from rain or excessive
moisture.
IMPORTANT
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MCOV-9
C. CAPACITIES
FULL OPEN VALVE CAPACITY
BA SED ON NO.2 FUEL OIL, @ 180° (FULL OPEN) VALVE POSITION
PRESSURE DROP
VALVE
MODEL #
PIPE
SIZE
NPT
B-1/2-12 1/2
B-1/2-16 1/2
B-1/2-18 1/2
B-1/2-20 1/2
B-1/2-24 1/2
F-1/2-16 1/2
F-1/2-18 1/2
F-1/2-20 1/2
F-1/2-24 1/2
BL-1/2-16 1/2
FL-1/2-20 1/2
FL-1/2-24 1/2
GL-1-29
G-1-29 1
K-1-29 1
K-1-38 1
(psig) 1 5 10 15 20 25 30 35 40 45 50 75 100
) 70 340 690 1,030 1,380 1,720 2,070 2,410 2,760 3,100 3,450 5,170 6,890
(mbar
VALVE FLOW CAPACITY
(gph) 22 50 71 87 100 112 12 3 132 142 150 158 194 224
(lph) 85 189 268 328 379 424 464 501 536 568 599 734 84 7
(gph) 36 80 113 139 160 179 196 212 227 240 253 310 358
(lph) 136 303 429 525 606 678 74 3 802 857 910 959 1,174 1,356
(gph) 46 102 145 177 205 229 250 271 289 307 323 396 457
(lph) 173 387 547 670 774 865 94 8 1,024 1,095 1,161 1,224 1,499 1,731
(gph) 57 127 179 219 253 283 310 335 358 380 400 490 566
(lph) 214 479 678 830 958 1,071 1,174 1,268 1,355 1,437 1,514 1,855 2,143
(gph) 72 161 228 279 323 361 395 427 456 484 510 625 722
(lph) 273 611 864 1,058 1,222 1,365 1,496 1,616 1,727 1,832 1,931 2,365 2,731
(gph) 33 74 104 128 147 165 180 195 208 221 233 285 329
(lph) 125 279 394 483 558 623 68 3 738 789 837 882 1,080 1,247
(gph) 68 153 216 265 306 342 375 405 432 459 483 592 684
(lph) 259 579 818 1,002 1,157 1,294 1,418 1,531 1,637 1,736 1,830 2,241 2,588
(gph) 100 224 317 389 449 502 548 593 634 673 709 869 1,003
(lph) 380 849 1,201 1,471 1,698 1,898 2,076 2,246 2,401 2,547 2,685 3,288 3,797
(gph) 150 336 475 582 672 752 823 889 951 1,008 1,063 1,302 1,503
(lph) 569 1,273 1,800 2,204 2,545 2 ,845 3,117 3,367 3,599 3,816 4,024 4,929 5,689
(gph) 33 74 105 129 149 167 182 197 211 223 236 289 333
(lph) 126 282 399 488 564 631 69 1 746 798 846 892 1,092 1,261
(gph) 105 236 334 409 472 528 579 625 668 709 747 915 1,056
(lph) 397 894 1,264 1,549 1,788 1,999 2,190 2,366 2,529 2,682 2,827 3,463 3,999
(gph) 153 343 485 595 687 768 841 908 971 1,030 1,086 1,330 1,535
(lph) 579 1,299 1,838 2,251 2,599 2 ,906 3,183 3,438 3,675 3,898 4,109 5,033 5,811
(gph) 164 366 518 634 732 818 897 968 1,035 1,098 1,157 1,418 1,637
1
(lph) 620 1,385 1,959 2,400 2,771 3 ,098 3,394 3,666 3,919 4,156 4,381 5,366 6,196
(gph) 145 324 458 560 647 724 793 856 915 971 1,023 1,253 1,447
(lph) 548 1,225 1,732 2,122 2,450 2 ,739 3,000 3,241 3,464 3,675 3,873 4,744 5,478
(gph) 190 426 602 737 851 952 1,043 1,126 1,204 1,277 1,346 1,649 1,904
(lph) 721 1,612 2,279 2,791 3,223 3 ,604 3,948 4,264 4,558 4,835 5,096 6,242 7,207
(gph) 256 572 809 991 1,145 1 ,280 1,402 1,514 1,619 1,717 1,810 2,217 2,560
(lph) 969 2,167 3,064 3,753 4,333 4 ,845 5,307 5,732 6,128 6,500 6,852 8,391 9,690
NOTES:
1. Capa cities based on No. 2 fuel oil at .849 s.g. and 60°F (15.5°C).
2. Pressure drop is m easured across full-open valve (Dial position 18).
3. When ordering, specify if valve is to be equipped with hand lever, hand w heel or adjustable radius lever for automatic control.
4. RP thread adapters are available.
Table 1 - Capacities
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MCOV-9
D. DIMENSIONS
See appropriate Dimension sheet for detailed dimensional information.
E. INSTALLATION
1. Using an appropriate thread sealant (Loctite 565 or equal) on the mating male threads,
install the control valve in the fuel line in any position, at a convenient location as close to the
burner as possible. To prevent air pocket formation in the burner fuel supply line, mount the
MCOV at or below the burner centerline. The valve should be placed downstream of shutoff
Valves and a filter. The shutoff valves make it possible to service the burner and control valve
without shutting down the fuel supply system. The filter will help prevent clogging by removing
any debris which is too large to pass through the control valve. All micro-cam oil valves are
provided with female connections threaded for standard pipe.
2. When an automatic operation is to be used, mount a control motor to a rigid support. The
valve’s operating arm moves in a clockwise direction to open the valve over an arc of 180°
(B, BL or H series) or 120° (F, FL, G, GL, J and K series) at an adjustable radius ranging from
1-1/8" to 4-3/8" (29 to 111mm).
A. Connect the valve lever to the control motor arm by a 3/8" (9.5mm) rod through the snap
connection pin on the valve lever. A set screw is provided on the snap pin to secure the
rod at the proper point.
B. Adjust the length of the control motor arm so that the valve pointer moves through the
desired range on the valve dial. Since the maximum travel of most control motors is only
90°, the full range of the valve may not be obtained. Be sure that the control motor does
not move the valve lever beyond the stops on the dial as this can damage the valve if
sufficient force is applied.
C. Hauck recommends the use of a position displacement low fire limit switch in accordance
with NFPA 86 when using automatic operation. The limit switch should be set to make
contact with the valve pointer at low fire. Ignition should not be attempted unless the valve
is at the proper low fire setting for the desired fuel flow rate.
3. All heavy fuel oil piping must be heat (electric or steam) traced and insulated. Self-regulating
heat tracing is recommended to maintain the desired temperature of a given fuel to achieve 90
SSU (1.8x10
W/m) covered with a nominal 2" (50 mm) of fiberglass type insulation is sufficient for most
applications. Heating the oil lines without fuel flow is not recommended.
When operating the valve with heavy oil, it is recommended that the fuel piping is purged when
not in use to protect the components in the fuel train including the control valve. Failure to purge
the fuel lines may result in deposits forming in the valve or line, or coking of the heavy fuel oils
which may affect the valve or system performance.
5 m2
/s) at the burner. Electrical heat tracing with a nominal rating of 12 W/ft (39
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MCOV-9
F. OPERATION
All Hauck MCOV’s are designed to efficiently handle any grade of fuel oil, even the heaviest
residual fuel oils. As the heavy grades of oil must be heated to achieve the proper viscosity for
atomization, [normally 90 SSU (1.84 x 10
these temperatures.
LP valves are available for use with liquid propane.
The large, easily readable indicator dial enables the valve to be set, or reset, to any setting
required by the application.
G. MAINTENANCE
All Hauck MCOV’s are designed for maintenance free operation. Under normal usage, no
service should be necessary.
-5 m2
/sec)], the valves are suitable for operation at
Due to the critical nature of the alignment of the
valve’s internal components and it’s operating
pressures, Hauck does not recommend
disassembly of MCOV’s. Such disassembly
will void warranty.
NOTE
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