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MUELLER Sight Glass: Sweat, Copper, 7 7/8 in Lg - Sweat Connection Sight Glasses
MUELLERSweat Connection Sight Glasses

MUELLER Sight Glass: Sweat, Copper, 7 7/8 in Lg

The MUELLER A 18122 is a sweat connection sight glass made of copper, measuring 7 7/8 inches in length with a 5.71-inch cut-out length. This MUELLER-branded component is designed for visual flow monitoring in copper…

SKU 3G-OTH-71917

Also listed as: A18122 · A-18122

Brand
MUELLER
Item
Sight Glass: Sweat, Copper, 7 7/8 in Lg
Category
Sweat Connection Sight Glasses
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Technical Specifications

MUELLER
Manufacturer Part Number
A 18122
Material
Copper

Technical Documents

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MUELLER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MUELLER A 18122 is a sweat connection sight glass made of copper, measuring 7 7/8 inches in length with a 5.71-inch cut-out length. This MUELLER-branded component is designed for visual flow monitoring in copper piping systems.

Frequently Asked Questions

What is the MUELLER A 18122 sight glass used for?

The MUELLER A 18122 sweat connection sight glass is used for visual flow monitoring in copper piping systems. It allows operators to observe fluid movement, detect blockages, or confirm proper circulation in industrial HVAC, refrigeration, or process lines. This copper component is installed via sweat (solder) connections for a leak-tight seal.

What are the specifications of the MUELLER A 18122 sight glass?

The MUELLER A 18122 sight glass is made of copper, with a length of 7 7/8 inches and a cut-out length of 5.71 inches. It features sweat connections for copper piping systems. The manufacturer part number is A 18122. This MUELLER component is designed for reliable visual flow monitoring in industrial applications.

Where to buy the MUELLER A 18122 sight glass worldwide?

3G Electric supplies the MUELLER A 18122 sight glass worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact our team to source this MUELLER sweat connection sight glass for your copper piping system. We provide competitive pricing and reliable service.

How to install a MUELLER sweat connection sight glass?

To install the MUELLER A 18122 sight glass, ensure copper pipes are clean and fluxed. Heat the joint evenly and apply solder until it flows into the gap. Allow the connection to cool naturally before pressurizing. Always follow standard copper sweat fitting practices and check for leaks after installation. MUELLER components are designed for durable service.

Used in

Common applications for MUELLER
Commercial refrigeration systems — Mueller steel shell filter driers for moisture and contaminant removal in liquid lines.
HVAC installations — Mueller sweat connection ball valves for flow control in refrigerant circuits.
Industrial process cooling — Mueller magnetic check valves to prevent backflow in refrigerant piping.
Refrigeration system maintenance — Mueller flare nuts and bushings for access valve connections.
Low-GWP refrigerant systems — Mueller A2L-compatible ball valves for use with low-flammability refrigerants.
Retrofit projects — Mueller filter driers and valves for upgrading existing refrigeration equipment.

MUELLER Products

3G Electric supplies MUELLER sweat connection sight glasses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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