We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
MUELLER Sweat Connection Sight Glass, Copper, 7 7/8 in Lg, 5.71 in Cut Out Lg - Sweat Connection Sight Glasses
MUELLERSweat Connection Sight Glasses

MUELLER Sweat Connection Sight Glass, Copper, 7 7/8 in Lg, 5.71 in Cut Out 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
Sweat Connection Sight Glass, Copper, 7 7/8 in Lg, 5.71 in Cut Out Lg
Part Number
A 18122
Category
Sweat Connection Sight Glasses
Available to Order
Also known as:A 18122MUELLER
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

MUELLER
Manufacturer Part Number
A 18122
Material
Copper

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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.
Not sure this is the right part? Photo-identify it

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from MUELLER

View all MUELLER parts

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first