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The MAXITROL 12a04 is an automatic vent limiting device designed for use with Maxitrol gas pressure regulators. It replaces a standard vent orifice and restricts the amount of gas that can escape into a space in the event of a diaphragm failure, without releasing or relieving gas into the environment during normal operation. The 12a04 is a critical safety component for indoor gas regulator installations where controlling gas escapement is required by code or site conditions. Licensed gas technicians and plumbers install this device as part of a compliant indoor regulator assembly.
This vent limiting device is intended for indoor applications and enclosed spaces where limiting gas escapement from regulator diaphragm failure is essential. It is not suitable for outdoor use where it would be exposed to the elements. Compatible regulator models include the RV48, RV52, RV53, and RV61. It fits 1/8 inch vent connections on those Maxitrol regulator bodies.
Designed for use with Maxitrol gas pressure regulators RV48, RV52, RV53, and RV61. Fits 1/8 inch vent port connections on compatible regulator bodies.
Installation should be performed by a licensed plumber or gas technician in accordance with applicable local codes and IFGC requirements. Shut off the gas supply and verify zero pressure at the regulator before servicing the vent port. This device is rated for indoor use only and must not be installed in locations exposed to outdoor weather conditions. Do not substitute this device for a full pressure relief valve where one is required by code.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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