Jaw profile determines the crimp shape
Brass Press Fittings require the correct jaw profile. V-profile and M-profile are two common types. Each creates a different crimp shape. Example: a V-profile jaw for one fitting type.
V-profile design
A V-profile jaw creates a V-shaped crimp. The crimp is a single indentation. It is used for specific fitting brands. Brass Press Fittings with V-profile jaws are common in Europe.
M-profile design
An M-profile jaw creates an M-shaped crimp. The crimp has two indentations. It is used for other fitting brands. Brass Press Fittings with M-profile jaws are also common.
Compatibility with fitting brands
V-profile jaws fit specific brands. M-profile jaws fit other brands. The profiles are not interchangeable. Brass Press Fittings require the correct profile.
Crimp appearance
V-profile crimps look like a single groove. M-profile crimps look like two grooves. The appearance helps identify the profile. Example: checking the crimp after installation.
Example: V-profile installation
A plumber uses a V-profile jaw for Brass Press Fittings. The crimp is a single groove. The joint is sealed. Example: a successful V-profile installation.
Example: M-profile installation
A plumber uses an M-profile jaw for Brass Press Fittings. The crimp has two grooves. The joint is sealed. Example: a successful M-profile installation.
Example: wrong profile used
A plumber uses a V-profile jaw on an M-profile fitting. The crimp is incorrect. The joint leaks. Example: a failed installation from wrong profile.
Tool compatibility
Pressing tools accept different jaw profiles. The jaws are interchangeable. The correct profile must be selected. Brass Press Fittings require matching jaws.
Manufacturer specifications
Check the manufacturer's specifications. The fitting specifies the required profile. Brass Press Fittings should be used with the correct jaw.
Final profile summary
Brass Press Fittings use V-profile or M-profile jaws. V-profile creates a single groove. M-profile creates two grooves. The profiles are not interchangeable. Always use the correct profile for the fitting. Brass Press Fittings require the right jaw profile. Example: check the fitting specification before pressing.