Top 10 Camlock Coupling Manufacturers in 2026: Global Brands and OEM Bases
Cam and groove couplings look identical across brands because they have to be — the interface is standardized worldwide (A-A-59326 / MIL-C-27487 in North America, EN 14420-7 in Europe, DIN 2828 in Germany), so any Type A adapter mates with any Type C, D or DC coupler. That standardization means the choice of manufacturer is about quality, range, standards compliance and supply reliability rather than lock-in. Here are the manufacturers that define the market in 2026.
Standard-range aluminum coupler — the product class this guide compares makers on.
Stainless range — where OEM-to-drawing capability differentiates suppliers.
How we selected these manufacturers
- Product depth — full type range (A-F, DC, DP), full size range (½”-6”), and multiple materials (aluminum, stainless, brass, polypropylene)
- Standards compliance — products traceable to A-A-59326, MIL-C-27487 or EN 14420-7
- Supply reliability — global distribution and consistent stock
- Specialty leadership — a category they own (agriculture, chemical, dry-break, OEM supply)
1. Dixon Valve & Coupling — USA
The largest dedicated maker of cam and groove couplings in North America, headquartered in Chestertown, Maryland. Dixon’s G300 series covers the full type and size range in aluminum, stainless, brass and polypropylene, with specialty lines like conductive couplings for fuel grounding and self-locking arms. The reference brand most distributors stock first. → dixonvalve.com
2. OPW Engineered Systems (Dover) — USA
The company behind Kamlok® — the original cam and groove brand so ubiquitous that “kamlok” is often used generically for the coupling itself. OPW, a Dover company, covers cam and groove plus dry-disconnect systems (Kamvalok®) for chemical and fuel loading. The origin story of the standard. → opwglobal.com
3. Banjo Corporation — USA
Indiana-based Banjo dominates agricultural fluid handling — irrigation, sprayers and livestock watering — with the Banjo 300 series cam lever couplings in polypropylene and stainless. If you spec camlocks for ag duty, Banjo is the brand you see on farms across North America. → banjocorp.com
4. PT Coupling — USA
Enid, Oklahoma-based PT Coupling (PT®) builds cam and groove couplings plus the Prolink dry-disconnect line, with strong distribution through industrial supply channels. Known for consistent quality at competitive pricing across the standard range. → ptcoupling.com
5. Kuriyama of America — USA
Kuriyama pairs hose manufacturing with a full line of camlock couplings and adapters, including polypropylene camlock Type C couplers popular in chemical and agricultural transfer. A one-stop supply chain for hose + fittings buyers. → kuriyama.com
6. Alfagomma — Italy
A global fluid-handling group headquartered in Milan, Alfagomma manufactures industrial hose and couplings across Europe, Asia and the Americas. Their camlock range covers European (EN 14420-7) and North American standards — the brand you see on European industrial transfer rigs. → alfagomma.com
7. Campbell Fittings — USA
Pennsylvania-based Campbell Fittings manufactures the Evertite® camlock line alongside industrial hose fittings — a heritage American brand with deep catalog coverage of cam and groove couplings and adapters. → campbellfittings.com
8. Parker Hannifin — USA
The global fluid-power giant includes quick-disconnect couplings across its industrial portfolio, with cam and groove products in the general quick-connect family. The choice when a buyer wants a single qualified supplier across an entire fluid-handling system. → parker.com
9. Gates Corporation — USA
Denver-based Gates is best known for belts and hydraulic hose, but its fluid-transfer portfolio includes camlock couplings that pair with its industrial hose lines — one supplier for hose, fittings and couplings on transfer rigs. → gates.com
10. The China OEM base — Ningbo / Yuyao, Zhejiang
The volume engine of the global camlock market. Hundreds of foundries and machining shops across the Ningbo-Yuyao cluster produce cast aluminum, brass and stainless camlocks that supply private-label brands worldwide. Many global “brands” are assembled from this base; buying direct here is how importers and trading companies get OEM pricing with private labeling. If you are sourcing volume, the cluster to know is Ningbo-Yuyao.
Choosing a manufacturer: the practical checklist
- Certification first — ask for the standard traceability (A-A-59326 / MIL-C-27487 / EN 14420-7) on the batch you are buying
- Gasket documentation — for food or potable duty, the gasket compliance paperwork matters as much as the body
- Batch consistency — castings vary; a manufacturer with QC documentation is worth the premium
- Stock depth — the brand that keeps 3” stainless Type C in stock when you need it is the brand to standardize on
- Private label / OEM — if you are building a distribution brand, the Ningbo-Yuyao base or a brand with OEM programs (Dixon, Banjo, PT all run OEM supply) is your route
CamlockPro sources from the same standards and can supply any type, size and material in this guide — ask us for the documentation and the quote.
Related guides
- Camlock coupling types explained: A to F, DC and DP — the types every manufacturer builds
- Camlock material guide: aluminum vs stainless vs brass vs PP — material choice across brands
- Camlock standards: pressure rating chart — A-A-59326 and EN 14420-7 working pressures
- OEM camlock fittings — private-label and OEM supply from CamlockPro