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This is an Armstrong steam trap, model WT-1N, with a 1/2-inch connection.

It’s rated for 400 psi and temperatures up to 650°F, so it’s built for serious industrial or commercial steam applications.
The body is stainless steel, which means it’s durable and corrosion-resistant.
This one is new old stock—technically an open box but in excellent condition.

It might have been used for demo or testing, but functionally it’s perfect and includes the original accessories.

No major wear, no defects.

If you need a reliable steam trap for a system upgrade or replacement, this one’s a solid pick.
MPN isn’t listed, but the WT-1N model number is what matters.

Don’t pass up on a quality NOS part if you’re in the trade.

4.8 out of 5