MUELLERSweat Connection Sight Glasses

MUELLER Sight Glass: Sweat, Brass, 4 7/8 in Lg

The MUELLER Sight Glass (MPN A 18115) is a sweat connection sight glass made of brass. It has a length of 4 7/8 inches and a cut out length of 4.28 inches.

SKU 3G-OTH-71832

Also listed as: A18115 · A-18115

Brand

MUELLER

Item

Sight Glass: Sweat, Brass, 4 7/8 in Lg

Local availability & support

Delivery: Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment: Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

MUELLER

Manufacturer Part Number

A 18115 

Material

Brass 

Technical Documents

No technical documents available for this product.

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MUELLER Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

The MUELLER Sight Glass (MPN A 18115) is a sweat connection sight glass made of brass. It has a length of 4 7/8 inches and a cut out length of 4.28 inches.

Frequently Asked Questions

What is a MUELLER sight glass used for?

A MUELLER sight glass provides visual confirmation of fluid flow, level, or condition in a pipeline. It is commonly used in HVAC, refrigeration, and industrial process systems to monitor refrigerant or liquid flow without opening the line.

What are the specifications of the MUELLER A 18115 sight glass?

The MUELLER A 18115 is a sweat connection sight glass made of brass. It measures 4 7/8 inches in overall length with a cut out length of 4.28 inches. The sweat connection allows for permanent copper-tube installation.

Where to buy a MUELLER sight glass worldwide?

3G Electric supplies the MUELLER A 18115 sight glass to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this brass sweat connection sight glass.

How to install a sweat connection sight glass?

Install a sweat connection sight glass by cleaning and fluxing the copper tube ends, then heating the joint evenly and applying solder. Allow the assembly to cool naturally. Always follow the manufacturer's guidelines and local codes for pressure and temperature limits.

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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