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Mueller Industries AU17864 3 Way Ball Valve 7/8"

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2  Reviews Add Your Review
Special Price $326.85 Regular Price $362.81
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SKU
AU17864
The Mueller Industries AU17864 is a 3-Way Ball Valve, a flexible type that can control the flow of air and water in HVAC equipment. It measures 7/8” in diameter, and effectively directs flow through three ports that can be configured to route fluids in different ways. It is made of stainless steel, which is strong and can withstand corrosion, it can be used in all kinds of places, and it is robust making it easy to install and maintain. It is applied to systems including chillers, air handling, and heat exchanger systems. It enables the use of multiple flow paths where there is a need to switch between them to enhance the flow of the system.
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HVAC Controls & Electrical, Valves
Manufacturer:
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Specifications

  • Size: 7/8"
  • Type: 3-Way Ball Valve
  • Material: Stainless Steel
  • Weight: 1.67 Lbs

Product Overview:
Provides a three-way flow-control component for directing fluid through designated passages within refrigeration equipment. The Mueller Industries AU17864 7/8" 3-Way Ball Valve is used where connected lines require a controlled change in flow direction. Valve movement selects the available passage according to the operating position, managing the relationship between different sections of the circuit. The 7/8" specification identifies the connection size associated with the valve. Its primary function is to control the movement of the circulating medium through the equipment's connected pathways.

Three-Way Ball Movement:
The internal ball contains passages that align with different ports as the valve changes position. Rotational movement alters the internal communication between those ports, establishing the selected connection through the valve body. The mechanical arrangement determines which openings are placed in communication at a given position. This operating principle distinguishes a three-way design from a valve that only controls a single inlet and outlet relationship.

Refrigeration System Flow Control:
Within HVAC and refrigeration equipment, the valve serves as a flow-routing component between connected sections of the system. Its three-way configuration allows the system to select the required fluid path for a particular circuit arrangement. The valve therefore functions as part of the system's overall flow-control assembly rather than as a standalone shutoff component.

Replacement Guidelines:
Replacement requires assessing the three-way valve configuration, connection size, port arrangement, flow-path requirements, and associated refrigeration equipment specifications. Mueller Industries AU17864 7/8" 3-Way Ball Valve should be selected based on the required connection characteristics and operating conditions of the refrigeration system.

Common Failure Symptoms:

  • Leakage around the valve body or stem.
  • Difficult or restricted valve movement.
  • Unintended fluid leakage between connected ports.
  • Visible corrosion or physical damage.
  • Improper flow routing within the connected circuit.

Equipment Compatibility:
The Mueller Industries AU17864 is intended for HVAC and refrigeration systems requiring a 7/8-inch three-way ball valve configuration. Verify the connection size, valve type, port arrangement, and part number against the equipment service documentation before replacement. Matching these details helps confirm that the valve configuration corresponds to the requirements of the specific system.

Technical Specifications:
Brand: Mueller Industries
Part Number: AU17864
Part Type: 3-Way Ball Valve
Connection Size: 7/8 inch

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Product Questions (7)
Customer Questions
What maintenance is required for the Mueller Industries AU17864 Ball Valve?

Regularly inspect the valve for leaks or corrosion. Operate it periodically to prevent sticking, and lubricate the stem if recommended by the manufacturer. Ensure connections are tight and always relieve system pressure before maintenance

What are common issues with the Mueller Industries AU17864 Ball Valve?

  • Leakage around seals.
  • Valve sticking or difficult to turn.
  • Improper flow direction.
  • Wear or damage to the ball.

What is a 3-way ball valve used for in a refrigeration system?

A 3-way ball valve directs refrigerant between multiple connected passages, allowing different sections of the circuit to be placed in communication.

How does the AU17864 differ from a standard 2-way ball valve?

The AU17864 manages the relationship between three connected ports, whereas a standard 2-way ball valve primarily controls flow through a single passage.

What makes a ball valve a mechanical flow-control component?

A ball valve changes the available fluid passage through physical movement of an internal ball rather than using an electrical sensing or control process.

Why does a 3-way valve have multiple ports?

Multiple ports allow the valve to connect different sections of a fluid circuit and establish alternate routing relationships between those sections.

What role does the AU17864 serve within refrigeration equipment?

The AU17864 functions as a refrigerant-routing component that manages how connected sections of the refrigeration circuit communicate during operation.

Installation Steps

Step1: Turn off water supply before starting.

Step2: Relieve system pressure and drain lines as needed.

Step3: Remove the old valve, noting orientation and port connections.

Step4: Install the new ball valve in the same orientation and secure it with proper fittings.

Step5: Tighten connections to manufacturer torque specs.

Step6: Restore water supply, check for leaks, and verify proper flow direction and operation.