Mueller A14852 Packless Valve

The Mueller A14852 Packless Valve is a professional-grade refrigeration diaphragm valve designed for critical liquid, suction, and discharge line applications. Featuring a 5/8" ODF solder connection, this backseating manual valve utilizes a stainless steel diaphragm to ensure a positive, leak-proof seal without the need for traditional stem packing. The forged brass body and rugged construction provide a maximum working pressure (MWP) of 700 PSIG, making it suitable for high-pressure refrigerants including R-410A. With a height of 3.38" and a length of 7.31", the Mueller packless valve offers a compact footprint for tight mechanical rooms while maintaining a high flow coefficient to minimize pressure drop across the circuit. This HVAC shut-off valve is engineered for temperature ranges of -40°F to 300°F, ensuring reliable refrigerant flow control and isolation during system maintenance or component replacement in commercial refrigeration and air conditioning systems.

• Hermetic Seal: The multi-layer stainless steel diaphragm eliminates refrigerant loss common with standard packed valves.
• Full Flow Design: Engineered to provide a low pressure drop and high CV rating for maximum system efficiency.
• Field Reliability: Forged brass body provides superior strength and durability under extreme thermal cycling.
• Universal Compatibility: Approved for use with all common CFC, HCFC, and HFC refrigerants.
• Service Ease: The backseating design allows for internal component inspection and maintenance while the valve remains under pressure.

What is the maximum pressure rating for the Mueller A14852?
This valve is rated for a maximum operating pressure of 700 PSIG, which is compatible with most modern high-pressure refrigeration systems.

Can this valve be mounted in any orientation?
Yes, the packless diaphragm valve can be installed in any position, provided the flow direction matches the arrow indicated on the valve body.

Is the Mueller A14852 compatible with R-410A systems?
Yes, the technical specifications and pressure ratings meet the requirements for R-410A refrigerant lines and other high-pressure applications.

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.