Legend Valve
Legend Valve 201-231 4 inch 603 threaded adaptor
A 4-inch 603 FNPT threaded adaptor for connecting air-compressor or vacuum-pump components
- 4" 603 FNPT adapter fits compatible pipe threads
- Legend Valve brand signals professional plumbing quality
- New condition ensures clean, undamaged threads
- California Prop 65 notice discloses regulated chemical content
- Model 201-231 identifies the exact fitting for reordering
Legend Valve 201-231 4" Adaptor
The Legend Valve 201-231 is a 4-inch threaded adaptor built for air compressor and vacuum pump systems. It provides a 603 FNPT connection for joining components in fluid or air transfer lines. The part is supplied new and ships directly from the manufacturer. California Proposition 65 warnings apply for cancer and reproductive harm.
Installers needing a 603 FNPT junction
This adaptor suits technicians assembling or repairing compressed air circuits that require a 4-inch 603 threaded joint. It is not intended for buyers who need a different thread standard, a smaller nominal size, or a non-threaded coupling method. The component addresses only the specific 603 FNPT interface described.
603 FNPT thread specification
The decisive specification is the 603 FNPT thread designation on a 4-inch body. Matching this exact thread type to the mating fitting determines whether the adaptor will seal and hold pressure in the target system. Verify the thread callout on the existing hardware before ordering.
Highlights
- 4" 603 FNPT adapter fits compatible pipe threads
- Legend Valve brand signals professional plumbing quality
- New condition ensures clean, undamaged threads
- California Prop 65 notice discloses regulated chemical content
- Model 201-231 identifies the exact fitting for reordering
Specifications
| Brand | LEGEND VALVE |
|---|
Questions about this item
How can I verify the 4 inch 603 threaded adaptor is sealing correctly after installation?
Pressurise the system and apply leak-detect fluid to the FNPT threads; no bubbles mean the 201-231 adaptor is working as intended.
What comes with the Legend Valve 201-231 adaptor and what must I supply myself?
The box contains only the 4 inch 603 FNPT adaptor; you must provide matching pipe, thread sealant and any required tools.
Which version of the 603 threaded adaptor should I choose for a 4 inch FNPT connection?
Select the 201-231 model; it is the single 4 inch 603 FNPT adaptor listed for this application.
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