Vent Limiting Device, Maxitrol, 3/8 Mpt, Fits 325-5 1/2", 3/4" & 1" Regulator, 12a39

• Vent Limiting Device designed for use indoors and in spaces where limiting the amount of gas escapement due to failure is critical.
• Vent Limiter can only be installed in regulators design certified for their use.
• When using a Vent Limiting Device, the regulator must be mounted in a horizontal upright position.
• Vent Limiting Devices should not be used outdoors if they are exposed to the environment.
• Vent Protectors are available for outdoor applications.