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Brass adaptor with 1/4-20 and 3/8-16 threads

Watts

Watts AD 11 Adaptor 1/4-20 x 3/8-16 Brass bathware

SKU CH-B30A-N5BRX

Brass adaptor connects 1/4-20 and 3/8-16 threads for float balls, rods and valves

  • Product typeRunner
  • Connects 1/4-20 to 3/8-16 threads for float assemblies
  • Brass construction resists corrosion in water systems
  • Designed for float balls, rods and valves
  • New Watts AD 11 adaptor ready to install

Watts AD 11 Brass Adaptor

The Watts AD 11 adaptor connects components using a 1/4-20 by 3/8-16 thread pattern. It is built from brass for durability in plumbing installations. This part suits installers joining float balls, rods or valves in bathware systems.

Threaded connection for float components

The 1/4-20 to 3/8-16 sizing bridges common float hardware in tank assemblies. Brass construction resists corrosion during continuous water exposure. The adaptor handles standard float ball and rod connections in valve mechanisms. It does not suit applications requiring different thread pitches or non-brass materials.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $38.99
Typical for this category: the median of 1,499 items is $39.99.

Specifications

Product
Brand nameWATTS
Product typeRunner

Questions about this item

Will the 1/4-20 thread on this Watts adaptor mate with the float rod I already have?

The adaptor provides a 1/4 in -20 thread on one side, so it will connect to any float rod or valve with the same 1/4-20 specification.

How can I confirm the brass adaptor is seated correctly after installation?

Thread the adaptor fully until the 3/8 in -16 side engages the valve and the 1/4 in -20 side holds the float ball securely with no visible gap.

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