• Mueller Check Valves 90° Angle
  • Mueller Piston Check Valves
  • Mueller Magnetic Check Valves
  • Mueller Inline Check Valves
  • Mueller Check Valves Threaded Cap
  • Mueller Four‐Bolt Check Valves
  • Mueller Check Valves 90° Angle
  • Mueller Piston Check Valves
  • Mueller Magnetic Check Valves
  • Mueller Inline Check Valves
  • Mueller Check Valves Threaded Cap
  • Mueller Four‐Bolt Check Valves

Mueller Check Valves

As a trusted Mueller refrigeration check valve supplier in China, we supply a wide range of Mueller check valves, including spare parts for replacement, other refrigeration equipment and accessories, OEM services, and after-sales support.

Our product includes Mueller inline check valve, Mueller 90° Angle check valve, magnetic, four-bolt, oil, piston, threaded, or screw bonnet check valve.

These can be used in commercial refrigeration, transportation refrigeration, VRF, VRV systems, condensing units, cold storage, and Industrial HVAC systems. Contact us now for all-in-one wholesale support for refrigeration check valves.

Why Choose Mueller Check Valves From Miracle?

Mueller has been manufacturing its products in China for more than 20 years and has earned a reputation for quality and long-term reliability.

We, Miracle, as an authorized tier 1 Mueller refrigeration valve distributor in China with OEM technical support capacity, can offer competitive pricing to distributors, contractors, OEM manufacturers, wholesalers, and other HVAC businesses.

We are a one-stop HVAC component supplier, including Mueller check valves. Whether you need replacement refrigeration valves or OEM parts, Miracle is ready to support your business.

Mueller Check Valves Drawing

Mueller Check Valves 90° Angle Drawing

Mueller Piston Check Valves Drawing

Mueller Magnetic Check Valves Drawing

Mueller Inline Check Valves Drawing

Mueller Four‐Bolt Check Valves Drawing

Mueller Check Valves Threaded Cap Drawing

Mueller Check Valves

Mueller Inline Check Valves
Mueller Refrigeration Products

Mueller Inline Check Valves

This Mueller inline check valve is located in the refrigeration piping system and automatically allows refrigerant flow in the correct direction and closes when reverse flow occurs.

This space-saving design makes installation easy and reduces pressure drop.

Model number include A15620, A15621, A15622, A15623, A15628, A15629, A15630, A15631, A15632, A15633, A15634, A15635.

Mueller Refrigeration Products

Mueller Check Valves 90° Angle

Our Mueller 90° angle check valve maintains one-way refrigerant flow, prevents reverse circulation, and improves efficiency.

If you are replacing your old 90° angle check valve or installing a new one, we can supply you with OEM support, Mueller 90° angle check valve parts, and a rebuild kit.

Model number include A18383C, A18565C, A18566C, A18659C, A18660C.

Mueller Check Valves 90° Angle
Mueller Magnetic Check Valves
Mueller Refrigeration Products

Mueller Magnetic Check Valves

We supply Mueller magnetic check valves made of solid copper that use magnetic-assisted check valve technology to improve valve response and sealing performance. Its body is durable, corrosion-resistant, and leak-free.

Model number includes A 17934/CMV-4S, A 17935/CMV-6S, A 17936/CMV-8S, A 17937/CMV-10S, A 17938/CMV-12S, A17939/CMV-14S, A 17940/CMV-18S, A17941/CMV-22S, A17942/CMV-26S, A17943/CMV-34S, A 17944/CMV-42S, A 17981/CMV-50S.

Mueller Refrigeration Products

Mueller Piston Check Valves

This Mueller piston refrigeration check valve is a refrigeration flow control valve that uses an internal piston mechanism to allow refrigerant to flow in one direction, ideal for commercial [CO₂ (R744)] HVAC & Refrigeration Systems, condensing units, heat pump systems, etc.

Model number includes A18720, A18721, A18722, A18723, A18724, A18838, AH18720, AH18721, AH18722, AH18723, AH18724, AH18838.

 

Mueller Piston Check Valves
Mueller Check Valves Threaded Cap
Mueller Refrigeration Products

Mueller Check Valves Threaded Cap

This Mueller check valve threaded cap, also known as a Mueller screw bonnet check valve, has a forged brass body and a threaded screw bonnet construction. It is easier to remove and replace internal parts.

Model number includes A 17953, A 17954, A 17955, A 17956, A 17958, AT17954, AT17955, AT17956, AT17958.

Mueller Refrigeration Products

Mueller Four‐Bolt Check Valves

This four-bolt check valve has a removable 4-bolt bonnet cover, making maintenance and replacement of internal parts easier.

When internal maintenance is easier, refrigerant flow capacity increases, pressure drop decreases, and durability improves.

Model number includes B34235, B34236, B34237, B34238, B34239, B34240, B34241.

Mueller Four‐Bolt Check Valves

Features of Mueller Refrigeration Ball Valves

Sample Available
Sample Available
Strong Technical Skills
Strong Technical Skills
Authenticity guaranteed
Authenticity Guaranteed

Why Miracle Mueller Refrigeration Ball Valves

Advantages

  • Trusted distributor of Mueller refrigeration check valves
  • Professional technical support and product guidance
  • OEM and wholesale supply support
  • Wide range of refrigeration check valve models and sizes.
  • Fast response and efficient customer service
  • Strict quality inspection before shipment
  • Stable global supply line with on-time delivery
  • Support for replacement, maintenance, and after-sales
  • Long-term partnership with distributors and contractors.
  • Our secure carton packing reduces shipping damage risks.
  • Fast and stable international shipping support
  • OEM packing, custom packaging available
  • Bulk orders & wholesale shipments solutions
  • Product labeling and identification support
  • Quality Inspection, On-time delivery

Catalog of Mueller Ball Valves

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Gallery of Mueller Refrigeration Check Valves

Mueller Refrigeration Check Valves Gallery 1
Mueller Refrigeration Check Valves Gallery 1
Mueller Refrigeration Check Valves Gallery 2
Mueller Refrigeration Check Valves Gallery 2
Mueller Refrigeration Check Valves Gallery 3
Mueller Refrigeration Check Valves Gallery 3
Mueller Refrigeration Check Valves Gallery 4
Mueller Refrigeration Check Valves Gallery 4
Mueller Refrigeration Check Valves Gallery 5
Mueller Refrigeration Check Valves Gallery 5
Mueller Refrigeration Check Valves Gallery 6
Mueller Refrigeration Check Valves Gallery 6
Mueller Check Valves 90° Angle Features
  • DP 700 psig High-pressure for commercial application
  • COT -40°F to 300°F or -40°C to 149°C, ideal for both low and high temperature applications.
  • Suitable for Multiple refrigerants, Simple installation
  • Leak-resistant sealing reduces risk.
  • UL/cUL certification confirms quality and safety compliance.
Mueller Piston Check Valve Features
  • -40°C to 149°C COT can be used in both low and high temperature applications,
  • Up to 1305 psig MAP and 1000 psig MAP pressure capability with different models.
  • UL/cUL certification with Pressure Equipment Directive 2014/68/EU standards.
  • ​Different sizes and models of Mueller piston check valve are available to support various HVAC capacities, for example, 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, 7/8″
Mueller Magnetic Check Valve Features
  • 800 psig and 55 bar maximum abnormal pressure.
  • Suitable for both low- and high-temperature HVAC applications.
  • The 30 mesh stainless steel screen helps protect valve parts from debris contamination.
  • It has fast, easy, and flexible installation in vertical and horizontal positions.
  • Check our Mueller magnetic check valve catalog to find available magnetic check valve models and the range of connection sizes.
Mueller Inline Check Valve Features
  • Less than 1 psi pressure to open rating.
  • High pressure capability with 700 psig, Map 48 bar,
  • Temperature range is wide, from -40°F to 300°F or -40°C to 149°C.
  • It has minimal pulsation inside the refrigeration system.
  • Solder connection type – Ideal for permanent refrigeration piping connections.
  • UL/cUL certification with compliance with 2014/68/EU.
Mueller Check Valves Threaded Cap Features
  • It is also a brass body, durable and corrosion-resistant.
  • It is the top choice for technicians for simple removal and easy maintenance.
  • It has a high-pressure capability of 700 psig and a 48 bar pressure rating.
  • Temperature range from -40°F to 300°F (-40°C to 149 °C).
  • Equipped with a PTFE gasket sealing, CFC, HCFC, and HFC refrigerant compatibility,
  • 100% factory tested, UL/cUL, and CE certification
Mueller Four‐Bolt Check Valves Features
  • Forged brass construction with corrosion resistance and durability.
  • Ideal for Mueller four-bolt check valve replacement solutions.
  • “Y” pattern flow design provides minimal pressure drop and stable refrigerant circulation.
  • Design pressure 700 psig, MAP 48 bar,
  • The temperature range is from -40°F to 300°F or from -40°C to 149°C,
  • and it can be installed in both horizontal and vertical positions,
  • UL/cUL certification, and 2014/68/EU standards.
Send Your Inquiry Today

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