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ARMSTRONG LF 1/2" SWEAT UNION HARDWARE KIT - Unions
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ARMSTRONG LF 1/2" SWEAT UNION HARDWARE KIT

The ARMSTRONG Flange: 1/2 in is a bronze union with a 1/2 in sweat connection and 1 1/4 in NPSM thread, including an EPDM gasket. It is compatible with the ASTRO 225SSU model and is identified by manufacturer part…

SKU 3G-OTH-81185

Also listed as: LF12SWEATUNIONHARDWAREKIT · LF 1 2 SWEAT UNION HARDWARE KIT · LF-1-2-SWEAT-UNION-HARDWARE-KIT

Brand
ARMSTRONG
Item
LF 1/2" SWEAT UNION HARDWARE KIT
Part Number
LF 1/2" SWEAT UNION HARDWARE KIT
Category
Unions
Available to Order
Also known as:LF 1/2" SWEAT UNION HARDWARE KITARMSTRONG
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Phone
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Technical Specifications

ARMSTRONG
Manufacturer Part Number
LF 1/2" SWEAT UNION HARDWARE KIT
Type
LF 1/2" SWEAT UNION HARDWARE KIT, Union
NPSM
1 1/4 in
Sweat
1/2 in
Includes
Union
Body Material
Bronze
Gasket Material
EPDM
Compatible with Manufacturer Model Number
ASTRO 225SSU

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

Product Description

The ARMSTRONG Flange: 1/2 in is a bronze union with a 1/2 in sweat connection and 1 1/4 in NPSM thread, including an EPDM gasket. It is compatible with the ASTRO 225SSU model and is identified by manufacturer part number LF 1/2" SWEAT UNION HARDWARE KIT.

Frequently Asked Questions

What is the ARMSTRONG LF 1/2" SWEAT UNION HARDWARE KIT used for?

This bronze union is used in plumbing and HVAC systems to connect and disconnect pipes without cutting. It joins 1/2 in sweat copper tubing to 1 1/4 in NPSM threaded fittings, providing a leak-resistant seal with its EPDM gasket.

What are the specifications of the ARMSTRONG 1/2 in sweat union?

The ARMSTRONG union has a 1/2 in sweat connection and 1 1/4 in NPSM thread. It includes a bronze body and an EPDM gasket. The manufacturer part number is LF 1/2" SWEAT UNION HARDWARE KIT, and it is compatible with the ASTRO 225SSU model.

Where to buy the ARMSTRONG LF 1/2" SWEAT UNION HARDWARE KIT worldwide?

3G Electric supplies the ARMSTRONG LF 1/2" SWEAT UNION HARDWARE KIT worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to install the ARMSTRONG 1/2 in sweat union?

To install, clean and flux the 1/2 in copper tube, then solder it into the sweat end. Tighten the union nut by hand, then use wrenches on the hex flats to secure the 1 1/4 in NPSM threaded connection. Ensure the EPDM gasket is seated properly to prevent leaks.

Used in

Common applications for ARMSTRONG
Healthcare isolation rooms — Armstrong Calla 2820A sealed system tiles for acoustic control and cleanability
Commercial office ceilings — Armstrong Prelude main beams and cross tees for suspension framing
Hydronic heating systems — Armstrong E23.2 inline circulator pump for potable water circulation
Pump maintenance — Armstrong seal kit 8975002-374K for bearing assembly replacement in circulator pumps
Cleanroom environments — Armstrong Calla 1353N sealed system tiles with mold resistance and high light reflectance
General-purpose interiors — Armstrong Calla 2822AN ceiling tiles for 15/16 in grid with square tegular edge
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ARMSTRONG Products

3G Electric supplies ARMSTRONG unions. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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