1/2" ABS Bulkhead Thread X Thread Dimensions
A - 51mm/2" | B - 70mm/2.75" | C - 32mm/1.25"
3/4" ABS Bulkhead Thread X Thread Dimensions
A - 59mm/2.32" | B - 71mm/2.79" | C - 41mm/1.61"
1" ABS Bulkhead Thread X Thread Dimensions
A - 65mm/2.55" | B - 73mm/2.87" | C - 48mm/1.88"
1 1/2" ABS Bulkhead Thread X Thread Dimensions
A - 90mm/3.54" | B - 82mm/3.22" | C - 64mm/2.56"
2" ABS Bulkhead Thread x Thread Dimensions
A -103mm/4.05" | B - 81mm/ 3.18" | C - 81mm/ 3.18"
Installation Hole Size - Use Diamond Coated Glass Drill Bit for DIY installation
Heavy-duty Schedule 80 PVC bulkheads feature distinct advantages over ABS bulkheads
Selecting a Bulkhead : Click for Guide
Bulkhead Size |
Maximum Hole Size |
Minimum Hole Size |
PVC Plumbing Size |
1/2" ABS Bulkhead |
44mm/1.72" |
27mm/1.06" |
½” PVC or ½” NPT Threads |
3/4" ABS Bulkhead |
52mm/2.04 |
34mm/1.33" |
3/4” PVC or 3/4” NPT Threads |
1" ABS Bulkhead |
68mm/2.67" |
42mm/1.65" |
1” PVC or 1” NPT Threads |
1 1/2" ABS Bulkhead |
86mm/3.38" |
59mm/2.32" |
1 1/2” PVC or 1 1/2” NPT Threads |
2" ABS Bulkhead |
98mm/3.85" |
72mm/2.83" |
2” PVC or 2” NPT Threads |
1/2" Sch 80. Bulkhead |
51mm/2" |
32mm/1.25" |
½” PVC or ½” NPT Threads |
3/4" Sch 80. Bulkhead |
59mm/2.32" |
41mm/1.61" |
3/4” PVC or 3/4” NPT Threads |
1" Sch 80. Bulkhead |
65mm/2.55" |
48mm/1.88" |
1” PVC or 1” NPT Threads |
1 1/2" Sch 80. Bulkhead |
90mm/3.54" |
64mm/2.56" |
1 1/2” PVC or 1 1/2” NPT Threads |
2” Sch 80. Bulkhead |
103mm/4.05" |
81mm/3.18" |
2” PVC or 2” NPT Threads |
Example: If your hole diameter is 1.75” then you will want to use a ¾” ABS Bulkhead, or you could choose between the ½” and ¾” Schedule 80 Bulkheads.