Maxitrol 12A34 Limiter

Install the Maxitrol 12A34 to ensure code-compliant indoor venting for your RV81 series gas pressure regulators. This 3/8" NPT brass automatic vent limiter is an essential component for veteran technicians looking to eliminate the need for expensive, labor-intensive vent piping to the outdoors. Engineered with a precision ball check mechanism, it permits unobstructed diaphragm movement during normal cycles while limiting potential gas escapement to ANSI Z21.18 and CSA 6.3 standards in the event of a diaphragm rupture.

Designed for horizontal mounting, the Maxitrol 12A34 vent limiter provides a reliable fail-safe for industrial gas regulators installed in critical indoor spaces. The high-grade brass construction resists corrosion and maintains seat integrity under demanding service conditions. This HVAC gas regulator accessory is specifically certified for use with RV81 series units, ensuring the exact orifice sizing required for optimal response time and high lock-up protection. Ensure your next boiler or furnace installation meets local fuel gas codes with this genuine Maxitrol vent limiting device.

• Code Compliance: Meets ANSI and CSA certifications for indoor regulator installation without external vent lines.
• Reduced Labor: Eliminates the traditional requirement for copper or steel vent piping to the building exterior.
• Precision Safety: Integral ball check design effectively limits gas leakage during diaphragm failure.
• System Compatibility: Specifically calibrated for use with the 3/8" NPT vent ports on RV81 series regulators.
• Durable Material: Solid brass body provides superior longevity compared to plastic alternatives.

Can I use the 12A34 for outdoor installations?
No. Vent limiters are intended for indoor use only. For outdoor applications, use a Maxitrol vent protector to prevent moisture, dust, or insects from blocking the breather hole.

Does this limiter work in any mounting orientation?
Technicians must mount the regulator in an upright horizontal position when using the 12A34. Other orientations may cause the internal ball check to seal prematurely, leading to sluggish regulator response.

Will this fit the Maxitrol 325 series?
The 12A34 is specifically designed for RV81 series regulators. For 325 series units, verify the specific vent port size and use the corresponding model, such as the 12A09 or 12A39.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.