Product Overview | Automatic Shutoff Valves
AGENCY APPROVALS
TYPICAL APPLICATIONS
— FM 7400 — UL 429 — CSA 6.5 C/I
North American Automatic Shutoff Valves are used in fuel supply 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. — Expanded capacity ports.† — Companion flanges (order separately).† †Not available for all sizes.
They can be suitable for pipe lines carrying a variety of gases and liquids used in processes other than combustion.
Use Manual Reset Valves where "manned" operation is required or preferred.
Valves carry FM, UL, and CSA labels for natural gas and propane gas. All are IRI approvable. Maximum pressure differentials vary from 30 to 125 psi (depending on size). Sizes -7 and -8-XF are not suitable for #2 oil. All valves (except 1519-8-XF, and -8-XFS. 125°F [52°C]) are suitable for ambient and fluid temperatures from –20°F to 140°F (–28°C to 60°C) on AC electrical power. Valve action closes aggressively within one second of power loss. A two-stage latch/return motion by the operator can open a Manual Reset Valve after it is re-powered. Motorized Valves allow flow to begin within one second of powering: They 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 OVERHEATING MOTOR.
Specify Motorized Valves where remote or "unmanned" operation is needed. Not recommended for oil applications where on/off cycling is more than 6 cycles per hour. 1518 and 1519 Valves are for emergency automatic shutdown only--following any shutdown, close manual shutoff valves promptly.
STANDARDS
All North American 1518 and 1519 Automatic Shutoff Valves have the following standard characteristics: — Enclosure meets NEMA 1, 3, 3S, 4, 12, and CSA 2, 3, and 4. — SPDT "Proof-of-Closure" switch. — DPDT "Valve Open" switch.
— Prewired terminal block. — Pipe sizes ¾ " through 6". — Cast iron body.
— 115 V ac/60 Hz operation (other characteristics available). — Top assembly position is field rotatable in 90° increments. — 6 seconds opening time for most motorized valves on 60 Hz. — Meets Class VI valve seat leakage.
Backpressure: 1518/1519 valves are tested to 7"w.c. any higher and the valve seat may start to leak.
Bulletin 1518/1519 Page 2
Made with FlippingBook flipbook maker