1-1/4" NPT pipe size, 100-200F, 21 Cv. These are for radiant mixing piped with primary secondary, possibly boiler protection. Not listed for DHW use they are brass bodies and do not carry an ASSE listing.
I can send spec and installation sheet if needed.
$45.00 each two for $80.00
I think they could ship USPS in a medium size Flat Rate box for around 12 bucks