US Pipe and Foundry [1979+]
Marked on the bonnet and at base of barrel. Protectop traffic coupling.

• East River Park near the Manhattan Bridge (Manhattan)
• FDR Drive near 118th St. (Manhattan)
• E. 92nd St. between 1st Ave. and 2nd Ave. (Manhattan)
• east side of Jones Street (Manhattan)
• Amsterdam Ave. near W. 92nd St. (Manhattan)
• SW corner of Milton Berger Place and W. 8th St. (Brooklyn)
• corner of New Dock St. and Water St. (Brooklyn)

A.P. Smith Mfg. Co [1902-1960s]
Located in all five boroughs:

• East Orange, N.J. address
• Newark, N.J. address
• "E O" address (SE corner of Columbus Circle and Broadway, SE corner of Leonard St. and Baxter St., both in Manhattan)

DWS [1920s-1960s]
The former Department of Water Suppy, Gas and Electricity was the city agency in charge of maintaining the water system. Usually on Kennedy Valve or one-piece, unmarked barrels:

• "B OF B" with "D W S" (Brooklyn)
• "B OF B" with "D W S" (Manhattan at SW corner of W. 104th St. and Central Park West, as well as south side of E. 13th St. between 3rd Ave. and 4th Ave.)
• "CITY OF NY" with "D W S" (all five boroughs)
• "CITY OF NY" with "W S" (SW corner of Park Ave. and 37th St. in Manhattan)
• "WATER SAMPLING STATION" and no operating nut (Central Park West across from Museum Of Natural History in Manhattan)

HF [1990s+]
Usually on Penn Troy protectop barrels. Completely unmarked except for "HF" near the operating nut.

• corner of Hanover St. and Exchange Place (Manhattan)

M&H Valve and Fitting
Usually on one-piece barrels. Located in Manhattan:

• Fort Tryon Park
• NW corner of Astor Place and Lafayette St.
• SW corner 5th Ave. and 10th St.

Michigan Valve and Foundry [1930s]
Usually on one-piece barrels. Located in Manhattan and Brooklyn:

• SE corner of E. 78th St. and 2nd Ave. (Manhattan)
• Inwood Hill Park (Manhattan)
• Pacific St. between 3rd Ave. and 4th Ave. (Brooklyn)
• 5th Ave. and 22nd St. (Brooklyn)

MJ Drummond & Co.
Usually on one-piece barrels. Located in Manhattan:

• 9th Ave. and 39th St.
• 1st Ave. near 65th St.
• Inwood Hill Park
• Columbia University near Broadway / 116th St. entrance

A.P. Smith Mfg. Co [1902-1960s] / DWS [1920s-1960s]
These unmarked barrels have no markings above the bury line or "outer diameter ring." Half are entirely blank and half have a medium-sized blank rectangle on the barrel. Located in all five boroughs. Below the bury line, these barrels usually have any or all of the following markings:

• code number
• "DWS" or "WSNY"
• "APS"
• manufacturing year

Foran Foundry and Manufacturing Company [1920s-1940s]
One-piece barrels with large oval logo. Located in Manhattan:

• South side of Stanton St. between Allen St. and Orchard St. (Manhattan)
• NW corner of 2nd Ave. and 25th St. (Manhattan).

Kennedy Valve [1920s-1960s]
One-piece barrels with circular Kennedy Valve logo (year ranging from 1921 to 1963 or no year at all). Located in all five boroughs.

Roe Stephens [1909]
One-piece barrels with oval logo below the valves. Located in Manhattan:

• NE corner of Broadway and 31st St.