Camlock Couplings vs. Sink Drain P-Traps
Comparing 2 standards across 14 specifications. 14 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.
Sink drain P-traps are curved sanitary fittings governed by ASME A112.18.2 that maintain a 2-to-4 inch liquid seal barrier to block municipal sewer gases from entering living spaces. Sized in 1-1/4" tubular for bathroom lavatories and 1-1/2" for kitchen sinks, P-traps join via slip-joint compression washers and threaded slip nuts.
Specification Comparison Table
14 Parameters| Parameter / Spec | ||
|---|---|---|
|
Governing Standards
|
A-A-59326D / EN 14420-7 / DIN 2828 / MIL-C-27487 | ASME A112.18.2 / CSA B125.2 / IPC / UPC |
|
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) | — |
|
Trap Seal Depth
|
— | 2 to 4 inches (51 to 102 mm) of standing water column |
|
Bathroom Lavatory Sizing
|
— | 1-1/4" Tubular (31.75 mm OD) brass or polypropylene |
|
Kitchen & Utility Sizing
|
— | 1-1/2" Tubular (38.1 mm OD) brass or Schedule 40 PVC/ABS |
|
Connecting Mechanism
|
— | Beveled poly/rubber slip washer + threaded slip nut |
|
Maximum Trap Arm Distance
|
— | 1-1/4": 5 ft (1.5 m) | 1-1/2": 6 ft (1.8 m) to vent stack |