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 

or preferred.

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.

TYPICAL APPLICATIONS

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".

— 

— 

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 
BULLETINS.

DO NOT OPERATE MOTORIZED VALVES MORE THAN ONE 
CYCLE PER MINUTE FOR PERIODS OVER 15 MINUTES TO AVOID 
OVERHEATING MOTOR.

Bulletin 1518/1519

Page 2

STANDARDS

AGENCY APPROVALS

—

 FM 7400

—

 UL 429

—

 CSA 6.5 C/I

OPTIONS

— 

— 

Expanded capacity ports.†

— 

Companion fl anges (order separately).†

†Not available for all sizes.

Product Overview | Automatic Shutoff  Valves

Backpressure:

 1518/1519 valves are tested to 7"w.c. any higher 

and the valve seat may start to leak.