Camlock Couplings vs. Toilet Rough-In & Flange
Comparing 2 standards across 15 specifications. 15 key differences identified.
Camlock (Cam and Groove) couplings are heavy-duty industrial quick-connect fittings standardized under Commercial Item Description A-A-59326 (formerly MIL-C-27487) and EN 14420-7. Classified into Types A through F, male adapters insert into female couplers and lock via twin rotating cam lever arms against an elastomeric gasket for leak-free fluid transfer.
Toilet rough-in dimensions under ASME A112.19.2 define the exact centerline distance from the finished rear wall to the closet bolts on the floor flange. While 12.0 inches (305 mm) is the universal modern standard, 10-inch and 14-inch rough-in toilets accommodate legacy plumbing and thick tile remodels, sealing to a 4"×3" closet flange via a wax ring or rubber gasket.
Specification Comparison Table
15 Parameters| Parameter / Spec | ||
|---|---|---|
|
Governing Standards
|
A-A-59326D / EN 14420-7 / DIN 2828 / MIL-C-27487 | ASME A112.19.2 / CSA B45.1 / ANSI A112.19.5 |
|
Type A
|
Male Adapter × Female NPT / BSPP thread | — |
|
Type B
|
Female Coupler (with cam arms) × Male NPT / BSPP thread | — |
|
Type C
|
Female Coupler × Hose Shank (for hose barbs) | — |
|
Type D
|
Female Coupler × Female NPT / BSPP thread | — |
|
Type E
|
Male Adapter × Hose Shank | — |
|
Type F
|
Male Adapter × Male NPT / BSPP thread | — |
|
Standard Diameters
|
1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 6" | — |
|
Body Materials
|
316 Stainless Steel (250 PSI) | Aluminum (150–250 PSI) | Brass | Polypropylene (100 PSI) | — |
|
Standard Rough-In Distance
|
— | 12.0 inches (305 mm) from finished wall to center of flange |
|
Alternative Rough-Ins
|
— | 10.0 inches (254 mm) compact | 14.0 inches (356 mm) legacy |
|
Closet Flange Size
|
— | 4" × 3" (fits inside 4" DWV pipe or over 3" DWV pipe) |
|
Closet Bolt Spacing & Size
|
— | 6.0 inches (152 mm) apart | 5/16"-18 or 1/4"-20 brass bolts |
|
Finished Floor Flange Height
|
— | Flange bottom must rest flush on top of finished flooring (1/4" proud) |
|
Sanitary Water Closet Seal
|
— | 100% pure petroleum wax gasket with poly horn or silicone elastomer |