Product Overview | Automatic Oil Shutoff Valves
TYPICAL APPLICATIONS North American Automatic Shutoff Valves are used in fuel sup- ply lines on industrial furnaces, ovens, kilns, boilers, and other heating equipment. They shut off fuel automatically and instantly upon any break in electric power or the safety circuit. They cannot be opened until an interlocking safety or control circuit is complete, restoring power to the valve.
OPTIONS — Steel body (-S) rated for 600 psi. — Expanded capacity ports.†
† Not available for all sizes.
Valves carry FM and CSA labels for #2, #4, #5, and #6 fuel oil; kerosene and JP-4. All are IRI approvable. Maximum pressure differentials vary from 100 to 125 psi (depending on size). Valve action closes aggressively within one second of power loss. A two-stage latch/return motion by the operator opens a Manual Reset Valve after it is re-powered. Motorized Valves allow flow to begin within one second of powering and are fully open in six seconds for most sizes. PERFORM FREQUENT FIELD INSPECTIONS, LEAK TESTS, AND PROPER MAINTENANCE TO ASSURE CONTINUED SATISFACTORY VALVE PERFORMANCE. REFER TO INSTALLATION/MAINTENANCE BULLETINS. DO NOT OPERATE MOTORIZED VALVES MORE THAN ONE CYCLE PER MINUTE FOR PERIODS OVER 15 MINUTES TO AVOID OVER- HEATING MOTOR.
They can be suitable for pipe lines carrying a variety of liquids used in processes other than combustion.
Specify 1517 Motorized Valves where remote or "un-manned" opening is needed. (Offered in ½" through 1¼" pipe sizes.)
1517 Valves are for emergency automatic shutdown only--follow- ing any shutdown, close manual shutoff valves promptly.
STANDARDS
All North American 1517 Automatic Shutoff Valves have the following standard characteristics: — Sanctioned by FM, and CSA. — Enclosure meets NEMA 1, 3, 3S, 4, 12, and CSA 2, 4, and 5 standards. — SPDT "Proof-of-Closure" switch. — DPDT "Valve Open" switch. — Prewired terminal block. — Cast iron body, rated for 300 psi. — 120 V ac/60 Hz operation (other characteristics available). — Top assembly position is field rotatable. — 6 seconds opening time for most motorized valves on 60 Hz. — Ambient temperature limits –20°F to 140°F for 1" and 1 ¼ " valves, –20°F to 125°F for 1517 half inch and three quarter inch valves.
Bulletin 1517 Page 2
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