We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

Watts Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size - Thread Adapters
WattsThread Adapters

Watts Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size

The WATTS Adaptor: Float Thread Adapter (MPN AD 11) is a bronze thread adapter designed for use with stems. It features a 1/4"-20 connection thread size and a 3/8"-16 thread size, making it suitable for connecting…

SKU 3G-OTH-453472

Also listed as: AD11 · AD-11

Brand
Watts
Item
Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size
Category
Thread Adapters
Available to Order
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

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 11
Type
Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size, 3/8"-16
Compatible Product Type
Stems

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: Float Thread Adapter (MPN AD 11) is a bronze thread adapter designed for use with stems. It features a 1/4"-20 connection thread size and a 3/8"-16 thread size, making it suitable for connecting float components to stem assemblies.

Frequently Asked Questions

What is the WATTS Adaptor Float Thread Adapter used for?

The WATTS Adaptor Float Thread Adapter (MPN AD 11) is used to connect float components to stem assemblies in industrial fluid control systems. It is commonly applied in water treatment, HVAC, and process equipment where reliable stem-to-float attachment is required.

What are the specifications of the WATTS Adaptor AD 11?

The WATTS Adaptor AD 11 is a bronze thread adapter with a 1/4"-20 connection thread size and a 3/8"-16 thread size. It is compatible with stems and manufactured by WATTS. The part number is AD 11, and it is designed for float-to-stem assembly applications.

Where to buy the WATTS Adaptor AD 11 worldwide?

You can source the WATTS Adaptor AD 11 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this bronze thread adapter.

How to install the WATTS Adaptor Float Thread Adapter?

To install the WATTS Adaptor AD 11, thread the 1/4"-20 end onto the stem assembly and the 3/8"-16 end onto the float component. Hand-tighten securely; avoid over-torquing to prevent damage to the bronze threads. Always follow the stem manufacturer's guidelines for proper alignment.

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

Compatible alternatives & equivalents

Cross-referenced by specification & description
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN C6-7)
Watts
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN C6-7)
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical, Copper (MPN C6-3)
Watts
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical, Copper (MPN C6-3)
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical (MPN P-12)
Watts
WATTS Float Ball: Float Ball, 3/8"-16, 3/8"-16 Thread Size, Internal, Threaded, Cylindrical (MPN P-12)
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN P6-7)
Watts
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN P6-7)
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN C7)
Watts
WATTS Float Ball: Float Ball, 5/16"-18, 5/16"-18 Thread Size, Internal, Threaded, Cylindrical (MPN C7)
WATTS Float Ball: Float Ball, 1/4"-20, 1/4"-20 Thread Size, Internal, Threaded, Cylindrical, Copper (MPN C-4)
Watts
WATTS Float Ball: Float Ball, 1/4"-20, 1/4"-20 Thread Size, Internal, Threaded, Cylindrical, Copper (MPN C-4)

More from Watts

View all Watts parts
WATTS Adaptor: Float Thread Adapter, Bronze, 5/16"-18, 5/16"-18 Connection 1 Thread Size, 3/8"-16 (MPN AD 15)
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 5/16"-18, 5/16"-18 Connection 1 Thread Size, 3/8"-16 (MPN AD 15)
WATTS Adaptor: Float Thread Adapter, Bronze, 5/16"-18, 5/16"-18 Connection 1 Thread Size, 1/4"-20 (MPN AD 12)
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 5/16"-18, 5/16"-18 Connection 1 Thread Size, 1/4"-20 (MPN AD 12)
WATTS Adaptor: Float Thread Adapter, Bronze, 3/8"-16, 3/8"-16 Connection 1 Thread Size, 1/4"-20 (MPN AD-14)
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 3/8"-16, 3/8"-16 Connection 1 Thread Size, 1/4"-20 (MPN AD-14)
WATTS Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size, 5/16"-18 (MPN AD-10)
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 1/4"-20, 1/4"-20 Connection 1 Thread Size, 5/16"-18 (MPN AD-10)
WATTS Adaptor: Float Thread Adapter, Bronze, 3/8", 3/8" Connection 1 Thread Size, 5/16"-18 (MPN AD 13)
Watts
WATTS Adaptor: Float Thread Adapter, Bronze, 3/8", 3/8" Connection 1 Thread Size, 5/16"-18 (MPN AD 13)
WATTS Adaptor: Adaptor, Brass, 1/2" NPT, 1/2" Connection 1 Thread Size, NPT, 3/8"-16 NPT, NPT (MPN AD-3)
Watts
WATTS Adaptor: Adaptor, Brass, 1/2" NPT, 1/2" Connection 1 Thread Size, NPT, 3/8"-16 NPT, NPT (MPN AD-3)