Brass 1 1/2" Swivel NPSH to 1 1/2" Rigid NPT Double Female Male Threads_GHT New York Corporate Thread (NYC) BHW Female Threads_NPSH Model:3158 (6.0 TPI x 3.623 OD) 50PF100YL HFX50X100Y50S or RC50

New York Corporate Thread (NYC) is typically only found in parts of New Jersey and New York

Brass 2 1/2 inch NH (NST) female swivel pin lug x 2 1/2 inch NH (NST) male gate valve with non-rising stem

you need 2 1/2 inch plug which is the most common in the US

thread and couplings in use by fire departments today is double jacket hose with aluminum NH / NST

Brass 1 1 2" Swivel NPSH to 1 1 2" Rigid NPT Double Female Male Threads_GHT New York Corporate Thread (NYC) BHW Female Threads_NPSH Model:3158 (6.0 TPI x 3.623 OD) 50PF100YL HFX50X100Y50S or RC50 New York Corporate Thread (NYC) is typically only found in parts of New Jersey and New York Brass 2 1 2 inch NH (NST) female swivel pin lug x 2 1 2 inch NH (NST) male gate valve with non rising stem