shieldcracker
New Member
So this is my first post and I would like to share some of my observations and questions on the matter.
A P-trap is a combination of two elements a J-bend and a wall arm/elbow/bend. Every factory tubular J-bend (metal or plastic) I have ever seen has a slip joint connection at the inlet and a "firm connection" at the outlet. I suppose the slip joint connection at the inlet is for installation and service convenience and the firm connection at the outlet is to insure the J-bend stays connected to trap arm keeping the seal. There are two popular types of firm connections in metal and plastic J-bends: Ground joint (no gasket, commonly found in plastic bends) and the bead joint (gasket required, commonly found in metal bends).
Is there a specific application or code provision for selecting one type of connection over the other?
A P-trap is a combination of two elements a J-bend and a wall arm/elbow/bend. Every factory tubular J-bend (metal or plastic) I have ever seen has a slip joint connection at the inlet and a "firm connection" at the outlet. I suppose the slip joint connection at the inlet is for installation and service convenience and the firm connection at the outlet is to insure the J-bend stays connected to trap arm keeping the seal. There are two popular types of firm connections in metal and plastic J-bends: Ground joint (no gasket, commonly found in plastic bends) and the bead joint (gasket required, commonly found in metal bends).
Is there a specific application or code provision for selecting one type of connection over the other?