North American Adjustable Port Valves
Instructions & Parts List 1004/14
Adjustable port valves are for control purposes only. They are not for tight shutoff.
GENERAL INFORMATION
To adjust port area, set linkage for full valve travel. With valve handle at the wide open position, loosen screw (6) and retract the curtain fully (open) by turning knob (8) clockwise. Set burners for slightly more than maximum desired firing rate, using individual manual valves at the burners. Turn adjusting knob (8) counterclockwise until air pressure gauge shows a slight decrease, or until desired pressure is obtained. Tighten screw (6) into one of the holes in the adjusting knob (8) to prevent accidental shifting. Adjust linkage for low fire desired. Valve internals can be cleaned or replaced without removing the valve from the pipe line.
Adjustable Port Valves are ideal for automatic control of fuel or air flow to meet the requirements of modern instrumentation. The adjustable port feature permits sizing the valve to fit the job, after valve has been installed. Linkages can be adjusted for full or limited valve travel. INSTRUCTIONS – 1004 and 1014 VALVES for air at 3 psi or less When installing valves, support piping properly so there is no undue stress on the valves. Grease or other lubricants should not be applied to valve core or curtain, since dirt adhering to the lubricant increases friction.
The following table shows the number of turns required for adjusting the curtain height from full open to fully closed.
1004 and 1014 Valves
Valve
Number of Turns from Full Open to Fully Closed
size
B C D
27 32 48 48 72 36
E F
G*
* Discontinued
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
Made with FlippingBook flipbook maker