MUELLER

Mueller diaphragm valves, such as the sweat-to-sweat connection model (MPN A 14841), feature a standard length body with a 0.8-inch base to port center height. They are A2L compatible, meaning they can be used with low-flammability refrigerants. The valve has 1/2-inch female sweat ends, allowing for brazed connections in copper piping. These valves are typically used in refrigeration and HVAC systems to control flow. The diaphragm design provides reliable shutoff and is suitable for applications requiring frequent operation. The valve's construction and materials are designed to meet industry standards, ensuring compatibility with common refrigerants and system requirements.

Mueller sight glasses, such as the flare connection model (MPN A 18101), are not explicitly listed as A2L compatible in the provided specifications. However, they are constructed from brass and are designed for visual inspection of fluid flow in refrigeration, HVAC, and process lines. They comply with standards such as 2014/68/EU and UL/cUL. For A2L compatibility, it is recommended to verify the specific model's ratings. Sight glasses help detect bubbles or contaminants in the refrigerant stream, aiding in system maintenance. The flare connection allows for easy installation and removal. Always consult the manufacturer's documentation for refrigerant compatibility.

Mueller refrigeration ball valves, such as the sweat connection model (MPN A 17934), have a Cv flow coefficient of 4.3. This value indicates the valve's flow capacity: a higher Cv means greater flow at a given pressure drop. The valve features a 3/8-inch male sweat connection for brazing into copper lines and is A2L compatible. It has no access port or relief port. The ball valve design provides quick quarter-turn operation and low pressure drop. These valves are used in refrigeration and HVAC systems to isolate sections of piping for maintenance or control flow. The Cv rating helps engineers size valves appropriately for the system's flow requirements.

Mueller magnetic check valves, such as the copper-bodied model with 1/4-inch connections (MPN A 17934), use a magnetic mechanism to ensure one-directional flow. The valve opens when refrigerant flows in the forward direction and closes when flow reverses, preventing backflow that could damage compressors or other components. The magnetic design provides reliable sealing and low cracking pressure. These valves are available in various connection sizes, from 1/4 inch to 1 3/8 inches, and are constructed from copper for durability and compatibility with refrigerant lines. They are commonly used in refrigeration and air conditioning systems to protect against reverse flow conditions.

Mueller check valves are available with a range of connection types and sizes. The magnetic check valve series includes models with 1/4-inch, 3/8-inch, 1/2-inch, 7/8-inch, and 1 3/8-inch connections, all with copper bodies. These connections are typically sweat (brazed) types, suitable for copper piping. The cut-out dimensions vary accordingly, such as 5/16 inch for the 1/4-inch and 3/8-inch models, 7/16 inch for the 1/2-inch model, 3/4 inch for the 7/8-inch model, and 1 inch for the 1 3/8-inch model. This variety allows selection based on system piping size and flow requirements. Always refer to the specific product data for exact dimensions and compatibility.

Yes — 3G Electric (S) Pte. Ltd. supplies MUELLER products. We stock the MUELLER catalog and supply genuine factory-original products with full manufacturer warranty and technical support.