1-1/2" FBT SPLIT NUT.
THREADS ID = 2.3/8"
Fits 1.9" OD metal heater tube
2 screws included

1-1/2" MBT x 1" SOCKET TAIL PIECE.
THREADS OD = 2.45" - SOCKET ID = 1.30"

Fits your heater if:
1. Your metal heater tube has outside diameter of 1.90", and
2. Your piping is 1" PVC pipe (measured about 1-1/4" in diameter).

1-1/2" MBT x 1" SOCKET TAIL PIECE FITTING & O'RING KIT.
Includes:

2EA 1-1/2" MBT x 1" Socket Tail Piece

2EA 1-1/2" O'ring Gasket
Fits your heater if:
1. Your metal heater tube has outside diameter of 1.90", and
2. Your piping is 1" PVC pipe (measured about 1-1/4" in diameter).

1-1/2" MBT x 1-1/2" SOCKET TAIL PIECE.
THREADS OD = 2.45" - SOCKET ID = 1.90"

Fits your system if:
1. Your metal heater tube hs ouside diameter of 1.9", and
2. Your piping is 1-1/2" PVC pipe (measured about 1-7/8" in diameter).

1-1/2" MBT x 1-1/2" SOCKET TAIL PIECE FITTING & O'RING KIT.
Includes:

2EA 1-1/2" MBT x 1-1/2" Socket Tail Piece

2EA 1-1/2" O'ring Gasket
Fits your heater if:
1. Your metal heater tube has outside diameter of 1.90", and
2. Your piping is 1-1/2" PVC pipe (measured about 1-7/8" in diameter).

1-1/2" O'RING GASKET
1-1/2"ID x 2-3/8"OD

Fits 1.9"OD metal tube with 2-5/16" flanges

2" FBT SPLIT NUT.
THREADS ID = 3"
Fits 2.25" OD metal heater tube
2 screws included

2" MBT x 1-1/2" SOCKET TAIL PIECE.
THREADS OD = 3.07" - SOCKET ID = 1.90"

Fits your heater if:
1. Your metal heater tube has outside diameter of 2.25", and
2. Your piping is 1-1/2" PVC pipe (measured about 1-7/8" in diameter).