Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Watts Adaptor: Adaptor, Brass, 1/2" NPT, 1/2" Connection 1 Thread Size, NPT, 3/8"-16 NPT - Thread Adapters
WattsThread Adapters

Watts Adaptor: Adaptor, Brass, 1/2" NPT, 1/2" Connection 1 Thread Size, NPT, 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

Brand
Watts
Item
Adaptor: Adaptor, Brass, 1/2" NPT, 1/2" Connection 1 Thread Size, NPT, 3/8"-16 NPT
Category
Thread Adapters
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

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
View Full Spec Sheet

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

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.

Used in

Common applications for Watts
Industrial burner gas safety systems — Watts HF2000 filters with GF-series seal kits maintain clean, regulated gas supply to burner pilot and main flame controls
Commercial heating and boiler installations — Modular filter assemblies support preventive maintenance and component replacement without full system shutdown
Process gas delivery pipelines — DN25 through DN125 filter bodies accommodate varying flow rates and inlet pressures across manufacturing and chemical processes
Gas pressure regulation benches — Multi-stage Watts filter platforms integrate with pressure reducers and safety shutoff valves in test and calibration environments
Equipment retrofit and upgrade projects — Available connection sizes and seal kits enable adaptation of newer Watts components into legacy gas control systems
Planned maintenance and spare-parts inventory — Filter seal kits allow facilities to stock consumables in advance, reducing downtime during scheduled gas system servicing

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical (MPN P-12). Key specifications — Connection Location: Internal; Brand: WATTS.
Watts
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical (MPN P-12). Key specifications — Connection Location: Internal; Brand: WATTS.
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN P6-7). Key specifications — Connection Location: Internal; Brand: WATTS.
Watts
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN P6-7). Key specifications — Connection Location: Internal; Brand: WATTS.
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical (MPN P16). Key specifications — Connection Location: Internal; Brand: WATTS.
Watts
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical (MPN P16). Key specifications — Connection Location: Internal; Brand: WATTS.
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN P8-7). Key specifications — Connection Location: Internal; Brand: WATTS.
Watts
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN P8-7). Key specifications — Connection Location: Internal; Brand: WATTS.
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical, Copper (MPN C6-3). Key specifications — Connection Location: Internal; Brand: WATTS.
Watts
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical, Copper (MPN C6-3). Key specifications — Connection Location: Internal; Brand: WATTS.
WATTS Universal Tank Adapter: Universal Tank Adapter, Plastic, 1-1/4 in MNPT, Male, NPT, Female, NPT (MPN UA 600). Key specifications — Compatible Product Type: Automatic Livestock Watering Kit; Product Type: Universal Tank Adapter; Connection Gender - Side 2: Female; Connection Type - Side 1: NPT; Brand: WATTS; Connection Type - Side 2: NPT; Connection Gender - Side 1: Male; Material: Plastic.
Watts
WATTS Universal Tank Adapter: Universal Tank Adapter, Plastic, 1-1/4 in MNPT, Male, NPT, Female, NPT (MPN UA 600). Key specifications — Compatible Product Type: Automatic Livestock Watering Kit; Product Type: Universal Tank Adapter; Connection Gender - Side 2: Female; Connection Type - Side 1: NPT; Brand: WATTS; Connection Type - Side 2: NPT; Connection Gender - Side 1: Male; Material: Plastic.

More from Watts

View all Watts parts
WATTS Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size, 5/16"-18 (MPN AD-10). Key specifications — Compatible Product Type: Float Valves; Brand: WATTS.
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size, 5/16"-18 (MPN AD-10). Key specifications — Compatible Product Type: Float Valves; Brand: WATTS.
WATTS Adaptor: Float Thread Adapter, Bronze, 3/8"-16, 3/8"-16 Connection 1 Thread Size, 1/4"-20 (MPN AD-14). Key specifications — Compatible Product Type: Float Valves; Brand: WATTS.
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 3/8"-16, 3/8"-16 Connection 1 Thread Size, 1/4"-20 (MPN AD-14). Key specifications — Compatible Product Type: Float Valves; Brand: WATTS.
WATTS Adaptor: Float Thread Adapter, Bronze, 5/16"-18, 5/16"-18 Connection 1 Thread Size, 3/8"-16 (MPN AD 15). Key specifications — Compatible Product Type: Float Valves; Brand: WATTS.
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 5/16"-18, 5/16"-18 Connection 1 Thread Size, 3/8"-16 (MPN AD 15). Key specifications — Compatible Product Type: Float Valves; Brand: WATTS.
WATTS Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size, 3/8"-16 (MPN AD 11). Key specifications — Compatible Product Type: Stems; Brand: WATTS.
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size, 3/8"-16 (MPN AD 11). Key specifications — Compatible Product Type: Stems; Brand: WATTS.
WATTS Adaptor: Float Thread Adapter, Bronze, 3/8", 3/8" Connection 1 Thread Size, 5/16"-18 (MPN AD 13). Key specifications — Compatible Product Type: Stems; Brand: WATTS.
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 3/8", 3/8" Connection 1 Thread Size, 5/16"-18 (MPN AD 13). Key specifications — Compatible Product Type: Stems; Brand: WATTS.
WATTS Adaptor: Float Thread Adapter, Bronze, 5/16"-18, 5/16"-18 Connection 1 Thread Size, 1/4"-20 (MPN AD 12). Key specifications — Compatible Product Type: Stems; Brand: WATTS.
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 5/16"-18, 5/16"-18 Connection 1 Thread Size, 1/4"-20 (MPN AD 12). Key specifications — Compatible Product Type: Stems; Brand: WATTS.