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.
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
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
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.
" through 6".
115 V ac / 60 Hz operation (other characteristics available).
Top assembly position is fi eld rotatable in 90° increments.
6 seconds opening time for most motorized valves on 60 Hz.
Meets Class VI valve seat leakage.
Valves carry FM, UL, and CSA labels for natural gas and propane
gas. All are IRI approvable. Maximum pressure diff erentials 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 fl uid 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 aft er it is re-powered. Motorized Valves allow
fl ow 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
DO NOT OPERATE MOTORIZED VALVES MORE THAN ONE
CYCLE PER MINUTE FOR PERIODS OVER 15 MINUTES TO AVOID
CSA 6.5 C/I
Expanded capacity ports.†
Companion fl anges (order separately).†
†Not available for all sizes.
Product Overview | Automatic Shutoff Valves
1518/1519 valves are tested to 7"w.c. any higher
and the valve seat may start to leak.