Skip to content

McMaster 7551K127 Low-Pressure Galvanized Steel Pipe Flange, 3 NPT, Class 150, ASME B16.5

UPC: | Harmonization / Schedule B : 7307.91.2000

Country of Origin: United States | Shipping Weight: 12 lbs

Original price $193.25 - Original price $193.25
Original price
$193.25
$193.25 - $193.25
Current price $193.25

The galvanized finish on these flanges provides fair corrosion resistance. Also known as Pressure Class 150 flanges, they are for use in low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line.

Pressure Rating Low Pressure
Shape Straight
Fitting Type Flange
Fitting Connection NPT Female
Pipe Size
(A) 3
(B) 3
Flanged Connection Surface (B) Raised
Flange OD 7 1/2"
For Bolt Diameter 5/8"
Bolt Hole
Diameter 3/4"
Number Of 4
Bolt Circle Diameter 6"
Pressure Class 150
Material Galvanized Steel
Maximum Pressure @ Temperature 285 psi @ 72° F
Maximum Steam Pressure @ Temperature 150 psi @ 300° F
Certificate Form Digital
Certificate Type Material Certificate with Traceable Lot Number
Connects To Pipe
Flange Construction One Piece
For Fitting Material
(A) Galvanized Iron
(B) Galvanized Steel
For Pipe Material Galvanized Steel
For Pipe Schedule 40
For Fitting Pressure Class 125, 150
For Use With Air, Natural Gas, Oil, Steam, Water
Specifications Met ASME B16.5, ASTM A105, ASTM A123
Country of Origin United States
DFARS Compliance Specialty Metals COTS-Exempt
Export Control Classification Number (ECCN) EAR99
REACH Compliance Not Compliant
RoHS Compliance RoHS 3 (2015/863/EU) Compliant
Schedule B Number 7307.91.2000
U.S.–Mexico–Canada Agreement (USMCA) Qualifying Yes