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Watts AD-3 Brass Thread Adapter, 1/2" NPT x 3/8"-16 NPT - Thread Adapters
WattsThread Adapters

Watts AD-3 Brass Thread Adapter, 1/2" NPT x 3/8"-16 NPT

The WATTS Adaptor (MPN AD-3) is a brass thread adapter designed for use with float balls. It features a 1/2" NPT connection on one side and a 3/8"-16 NPT thread on the other, both with NPT threading. This adapter…

SKU 3G-OTH-453462

Also listed as: AD3 · AD 3

Brand
Watts
Item
AD-3 Brass Thread Adapter, 1/2" NPT x 3/8"-16 NPT
Part Number
AD-3
Category
Thread Adapters
Available to Order
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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

Watts
Manufacturer Part Number
AD-3
Type
Brass, 1/2" Connection 1 Thread Size, NPT, NPT
NPT
1/2"
Compatible Product Type
Float Balls

Technical Documents

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

Product Description

The WATTS Adaptor (MPN AD-3) is a brass thread adapter designed for use with float balls. It features a 1/2" NPT connection on one side and a 3/8"-16 NPT thread on the other, both with NPT threading. This adapter enables secure attachment of compatible float balls to piping systems.

Frequently Asked Questions

What is the WATTS Adaptor AD-3 used for?

The WATTS Adaptor AD-3 is a brass thread adapter designed to connect float balls to piping systems. It is commonly used in industrial fluid-level control applications, such as tanks and reservoirs, where a secure NPT-threaded connection is required for reliable float operation.

What are the specifications of the WATTS Adaptor AD-3?

The WATTS Adaptor AD-3 is made of brass and has a 1/2" NPT connection on one side and a 3/8"-16 NPT thread on the other, both with NPT threading. It is compatible with float balls and carries the manufacturer part number AD-3 from WATTS.

Where to buy the WATTS Adaptor AD-3 worldwide?

You can source the WATTS Adaptor AD-3 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring the adapter reaches your facility reliably.

How to install the WATTS Adaptor AD-3?

To install the WATTS Adaptor AD-3, thread the 1/2" NPT end into the piping system and attach the float ball to the 3/8"-16 NPT end. Use thread sealant on NPT connections to prevent leaks. Ensure the float ball is compatible with the adapter's thread size before installation.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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Watts Products

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

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