MUELLER Valves

Browse MUELLER valves worldwide — 86 refrigeration ball, check, relief & diaphragm valves in stock at 3G Electric. Source genuine parts for HVACR systems.

Genuine

OEM Parts

Expert

Tech Support

1 Day

Quote Response

Worldwide

Shipping

Get a Quote WhatsApp Sales Telegram Sales

Worldwide Shipping

Air & sea freight

Datasheets on Request

Technical specs & drawings

1-Day Quote Response

Singapore-based team

Browse:

Show

Page 8 of 9

MUELLER

MUELLER Sweat Connection Refrigeration Ball Valve

BrandMUELLER

Sign inAvailable

Brass flare nut and bushing for access valves with 7/16 in Female SAE Right-Hand thread. Rated for maximum pressure of 700 psi. Used to connect and seal access valves in refrigeration and HVAC systems requiring a flare connection.

MUELLER

MUELLER Flare Nut & Bushing for Access Valves

BrandMUELLER

Sign inAvailable

This four-bolt check valve is constructed from brass and features 7/8-inch connections with a 15/16-inch cut out. It is used in refrigerant systems as a flow-control component to prevent backflow, ensuring proper system operation and protecting compressors in HVAC and refrigeration applications.

MUELLER

MUELLER Four-Bolt Check Valve, 7/8 in Connections, 15/16 in Cut Out, Brass

BrandMUELLER

Sign inAvailable

This sweat connection refrigeration ball valve features a 3/8 in male sweat connection and an access port, with no relief port. It is A2L compatible and operates within a temperature range of -40°F to 300°F. Suitable for controlling refrigerant flow in HVAC and refrigeration systems.

MUELLER

MUELLER Sweat Connection Refrigeration Ball Valve

BrandMUELLER

Sign inAvailable

Sweat connection refrigeration ball valve with 1 3/8 in female sweat connection for brazed installation into copper lines. Features an access port for pressure or temperature readings without additional fittings. No relief port. A2L compatible for use with low-flammability refrigerants.

MUELLER

MUELLER AC17866 Sweat Connection Refrigeration Ball Valve

BrandMUELLER

Sign inAvailable

Angled packed line valve with 1/4 in female flare inlet and 1/4 in male flare outlet. Rated for maximum 700 psi. Features a plastic seal cap. A2L compatible. Used in HVAC and refrigeration systems for refrigerant flow control and isolation.

MUELLER

MUELLER Angled Packed Line Valve

BrandMUELLER

Sign inAvailable

Brass flare nut and bushing for access valves in HVAC and refrigeration systems. Features a 5/8 in Female SAE right-hand thread and is rated for a maximum pressure of 700 psi. Used to connect and seal refrigerant lines, ensuring a leak-tight joint.

MUELLER

MUELLER Flare Nut & Bushing: 5/8 in Female SAE Right-Hand, Brass, 700 psi Max

BrandMUELLER

Sign inAvailable

Magnetic check valve with copper body for refrigerant systems. Features 1 3/8-inch connections and a 1-inch cut out. Prevents backflow in HVAC and refrigeration piping, protecting compressors and system components.

MUELLER

MUELLER Magnetic Check Valve, 1 3/8 in Connections, 1 in Cut Out, Copper Body

BrandMUELLER

Sign inAvailable

This sweat connection refrigeration ball valve features a 1 5/8 in female sweat connection for direct brazing into copper lines. It has no access port and no relief port, and is A2L compatible for use with low-flammability refrigerants. Suitable for controlling refrigerant flow in commercial and industrial refrigeration systems.

MUELLER

MUELLER Sweat Connection Refrigeration Ball Valve

BrandMUELLER

Sign inAvailable

This sweat connection refrigeration ball valve features a 5/8 in female sweat connection for brazed installation on copper lines. It includes an access port for service or pressure testing and is A2L compatible for use with low-flammability refrigerants. No relief port is provided.

MUELLER

MUELLER Sweat Connection Refrigeration Ball Valve

BrandMUELLER

Sign inAvailable

← Prev 1…6 7 8 9 Next →

Guides & Resources

Gas Valves: Selection & Buying Guide

Frequently asked questions

Common questions about MUELLER Valves from 3G Electric.

What types of MUELLER valves does 3G Electric stock?

We carry 86 MUELLER SKUs including four-bolt check valves, magnetic check valves, unibody refrigeration ball valves (flare and sweat), diaphragm valves, pressure relief valves, and flare fittings, nuts, and bushings for access valves.

How do I choose between flare and sweat connection MUELLER valves?

Flare connections are ideal for quick, tool-friendly assembly and disassembly in refrigeration lines, while sweat (solder) connections provide a permanent, leak-tight joint. Choose based on your system's serviceability needs and installation preferences.

Can 3G Electric help with MUELLER valve sizing and selection?

Yes, our specialists can assist with sizing based on line diameter, pressure, temperature, and application—whether for commercial refrigeration, HVAC, or industrial process control. Contact us with your system specs for guidance.