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MUELLER A 18118 Sweat Connection Sight Glass - Sweat Connection Sight Glasses
MUELLERSweat Connection Sight Glasses

MUELLER A 18118 Sweat Connection Sight Glass

The MUELLER Sight Glass (MPN A 18118) is a sweat connection sight glass made of brass, with a length of 6 11/16 inches and a cut-out length of 5.41 inches. This component allows visual inspection of fluid flow in…

SKU 3G-OTH-71745

Also listed as: A18118 · A-18118

Brand
MUELLER
Item
A 18118 Sweat Connection Sight Glass
Part Number
A 18118
Category
Sweat Connection Sight Glasses
Available to Order
Also known as:A 18118MUELLER
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Local office
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Phone
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Technical Specifications

MUELLER
Manufacturer Part Number
A 18118
Material
Brass

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

Product Description

The MUELLER Sight Glass (MPN A 18118) is a sweat connection sight glass made of brass, with a length of 6 11/16 inches and a cut-out length of 5.41 inches. This component allows visual inspection of fluid flow in piping systems.

Frequently Asked Questions

What is the MUELLER Sight Glass A 18118 used for?

The MUELLER Sight Glass A 18118 is used for visual inspection of fluid flow in piping systems. Its brass sweat connection design allows installation in HVAC, refrigeration, or industrial process lines to monitor liquid or gas movement, detect bubbles, or verify system charge without disassembly.

What are the specifications of the MUELLER Sight Glass A 18118?

The MUELLER Sight Glass A 18118 is made of brass, has a length of 6 11/16 inches, and a cut-out length of 5.41 inches. It features a sweat connection for copper pipe installation. The manufacturer part number is A 18118.

Where to buy the MUELLER Sight Glass A 18118 worldwide?

3G Electric supplies the MUELLER Sight Glass A 18118 worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this brass sweat connection sight glass.

How to install a MUELLER sweat connection sight glass?

To install a MUELLER sweat connection sight glass, clean and flux the copper pipe ends, then solder the sight glass into the line using a torch. Ensure the glass is oriented for clear viewing of fluid flow. Allow the joint to cool before pressurizing the system.

Used in

Common applications for MUELLER
Commercial refrigeration — Mueller diaphragm valves (e.g., MPN A 14841) for refrigerant flow control in supermarket racks and cold storage.
HVAC systems — Mueller sight glasses (e.g., MPN A 18101) for monitoring refrigerant charge and detecting moisture in air conditioning lines.
Industrial process cooling — Mueller ball valves (e.g., MPN A 17934) for isolating flow in chiller and process piping.
Refrigeration compressor protection — Mueller magnetic check valves (e.g., MPN A 17939) to prevent backflow and compressor damage.
A2L refrigerant systems — Mueller A2L-compatible valves and components for use with low-flammability refrigerants in new equipment.
Refrigerant piping maintenance — Mueller check valves and sight glasses for system diagnostics and repair in HVAC and refrigeration.
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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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