DIXON catalog · Couplings

DIXON Cam & Groove Couplings and Hose Fittings

DIXON cam & groove couplings, hose fittings, crimp systems, clamps and pipe fittings — for liquids, dry bulk, steam and air. Descriptions and specifications according to the manufacturer.

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DIXON was founded in 1916 by Howard W. Goodall in Chestertown, Maryland, USA. Today it manufactures and supplies fluid transfer products for construction, oil and gas, agriculture, food processing, petrochemicals and utilities. Production is certified to ISO 9001, hose assemblies to the Pressure Equipment Directive 2014/68/EU (PED), and the company holds DNV GL type approval.

Flow Dynamics Caspian is the official DIXON distributor in Kazakhstan. We select couplings by media, pressure, temperature and hose type, and supply individual fittings as well as tested hose assemblies.

Cam & Groove couplings

DIXON cam & groove couplings are quick-connect fittings for hoses, pipes and tanks. They are used for liquids, dry bulk and vapours: cooling water, fuels, chemicals, cosmetics, food, adhesives, dyes, pharmaceuticals, pellets. To connect, slide the adapter into the coupler and close the cam arms; to disconnect, lift the arms.

Standard Cam & Groove range

DIXON Global, NPT/BSP threads

Interchangeable to CID A-A-59326D (supersedes Mil-C-27487). Sizes ½", 5" and 8" are not standardised.

Type A — adapter × female thread
Type B — coupler × male thread
Type C — coupler × hose shank
Type D — coupler × female thread
Type E — adapter × hose shank
Type F — adapter × male thread
DC — dust cap, DP — dust plug

Material	Standard
Aluminium	ASTM B26 356.0-T6
Stainless steel 316	CF8M, ASTM A351
Bronze	C84400
Brass, malleable iron	—
Polypropylene	30% glass-filled
Nyglass (nylon)	30% glass-filled
Hastelloy C (CW12MW)	A/F adapters 25–75 mm

Working pressure of metal cam & groove couplings

aluminium, bronze, brass, stainless steel, malleable iron

Pressure depends on size. Plastic couplings (PP, Nyglass) have lower ratings — please check when selecting.

Size	Working pressure
15 mm (½")	150 psi ≈ 10 bar
20–50 mm (¾"–2")	250 psi ≈ 17 bar
65 mm (2½")	150 psi ≈ 10 bar
75 mm (3")	125 psi ≈ 8.6 bar
100 mm (4")	100 psi ≈ 6.9 bar
125–150 mm (5"–6")	75 psi ≈ 5.2 bar
200 mm (8")	50 psi ≈ 3.4 bar

Versions and accessories

DIN cam & groove to BS EN 14420-7 (DIN 2828) in stainless steel and brass DN20–100; 45° and 90° elbows; spool adapters; reducing adapters and couplers; 150# flange adapters and couplers 1½"–8".

Gaskets: Buna-N (standard), FKM-A, EPDM, neoprene, white food-grade NBR, silicone, PTFE versions; extra-thick gaskets; colour coding
Replacement cam arms, “witch’s hat” strainers
Cam arm locking devices

EZ Boss-Lock

self-locking cam & groove

Cam arms lock automatically when closed. An ergonomic release lever sits under the thumb; the coupling cannot open accidentally when the hose is dragged along the ground. No sliding pins — the rotating mechanism does not clog with debris.

Investment-cast stainless steel with a small outside diameter — fits tank-truck hose tubes
Retrofit for existing stainless steel Boss-Lock
Cam arm guarantee — free replacement
Notched version: the stem can be reused after cutting off the ferrule

Vent-Lock

venting cam & groove

Releases residual pressure before the hose is disconnected. The venting system protects the operator from spray of hazardous and non-hazardous liquids and dry bulk.

Sizes: 1"–3"
Material: stainless steel 316
Pressure: up to 250 psi ≈ 17 bar (with mating DIXON L-style fittings)
Features: orange safety cam arms; not interchangeable with standard cam & groove

EZLink

armless cam & groove

For fuel unloading from a tank truck to a storage tank. Push-to-connect couplers, low profile, tabs lockable with pins or a zip tie. Compatible with standard adapters.

Sizes: 1½"–4"
Material: A356 aluminium or 316 stainless steel
Pressure with King Crimp ferrules: 2" — 250 psi ≈ 17 bar; 3"–4" — 150 psi ≈ 10 bar
Gasket: Buna-N, −15…+82 °C
Guarantee: lifetime on stainless steel tabs

Boss system and steam couplings

The Boss system is a universal “spud + stem + wing nut” connection providing a mechanical and pressure seal. The manufacturer recommends it primarily for steam hose; it is also used for air, water, petroleum products, chemicals and LPG (up to 1").

Boss Ground Joint and Washer Seal

ground joint and washer seal

Ground joint — metal-to-polymer seal (copper or polymer seat). Washer seal — Klingersil C-4401 washer, for steam up to 230 °C.

Sizes: ¼"–6"; stainless steel 316 and brass — ¾"–2"
Stems: ¼"–1" — plated steel; 1¼"–4" — plated iron; 6" — tubular steel
Clamps: 2- and 4-bolt Boss, steam up to 232 °C; special bolts, single use

Boss crimp steam fittings

Crimp Steam

Boss crimp steam fittings for approved steam hoses (Continental Flexsteel 250, Gates Plant Master Steam, Texcel Tex-Steam). No skiving; the ferrules bite into the wire reinforcement.

Sizes: ½", ¾", 1", 1½"
Temperature: −40…+232 °C
Testing: ISO 6134:2017
¾" and 1" assembly: working pressure 18 bar, burst 180 bar; −35…+210 °C (hot water up to +120 °C)
Materials: stem and ferrule — zinc-plated carbon steel; stainless steel on request

BS EN 14423 steam couplings

Sizes: DN13–25
Pressure: 18 bar
Media: steam up to 210 °C, hot water up to 120 °C
Clamps: brass safety clamps

King Crimp and Holedall crimp systems

Crimp stems must only be used with ferrules and sleeves from the same manufacturer — do not mix components of different brands.

King Crimp

stems, ferrules and sleeves

Crimp-style Type C and Type E cam & groove 1"–6" (356-T6 aluminium, brass, 316 stainless steel, ductile iron 3"–6"), EZ Boss-Lock Type C, grooved King combination nipples (Sch 80 plated steel / 316 stainless steel), flanged nipples for TTMA floating flanges 1½"–6", CF300/CF400 ferrules, sleeves (steel, 304 stainless steel, aluminium; liquids only, not for steam).

Connection (at 21 °C)	Working pressure
Standard crimp fittings 1¼"–3"	600 psi ≈ 41 bar
Standard fittings 10"	300 psi ≈ 21 bar
King combination nipple with ferrule 1"	400 psi ≈ 28 bar
same 2"–4"	300 psi ≈ 21 bar
same 6"	230 psi ≈ 16 bar
Cam & groove with ferrule 1"–2"	250 psi ≈ 17 bar
Cam & groove with ferrule 3"–4"	150 psi ≈ 10 bar
Cam & groove with ferrule 6"	75 psi ≈ 5 bar

Holedall

permanently attached couplings

External progressive swaging: the ferrule is pushed through a die, forming a continuous 360° compression band. A universal high-pressure system.

Externally swaged notched fittings: high pressure, flanged, Uni-Range (6–25 mm, factory assembled)
Stems: NPT, bevelled for welding, grooved, female thread; hose 1¼"–10"; long style — for higher pressure
Internal expansion (IXM — NPT, IXH — California, IXV — grooved), 1"–6": maximum flow for concrete pumping, plaster and grout, oil hose, heavy-duty air lines, barge loading and bottom loading
15 and 25 t presses
ARPM testing: 1.5 × working pressure for 15 minutes

Reusable and brass fittings

Brass ferrules for air, NPTF × hose barb, elbows, tees, JIC 37° and SAE 45° swivels; reusable fittings for low-pressure air (up to 250 psi), repairable.

Lok-On

fittings for push-on hose

For Lok-On hose only. No clamps or ferrules: the fitting locks once the hose is pushed fully on; the cut end is hidden by a plastic cap.

Material: brass
Hose: ID ½", ⅝", ¾"
Thread: GHT ¾" (female swivel / male)

Industrial hose fittings

Frac fittings and hammer unions

One-piece frac fittings deliver water and sand slurry to hydraulic fracturing sites; the one-piece stem eliminates the leak path of two-piece threaded systems. Hammer unions: −32…+93 °C; do not mix figures of different series.

Frac fittings: 2"–8", 400 psi ≈ 28 bar at 4:1 safety factor (3" — standard ferrules, 4" — HD ferrules)
Hammer union nuts: Fig 50 — 500 psi, Fig 100 — 1000 psi, Fig 200/206 — 2000 psi (cold working pressure)
Materials: forged nut; malleable iron stems, zinc-plated

Swivel joints

Leak-proof swivels for pipelines and hoses — prevent twisting. Petroleum, petrochemicals, refineries, mining, distilling, paint, irrigation, wastewater, food industry; blending plants, drum filling, bulk transfer, vacuum and oil trucks.

Single, double and triple plane versions (styles 10–80)
Split flange swivels: seal replacement without removing the balls

Loading arms

For liquids and dry bulk at refineries, chemical plants, rail and truck terminals, IBC and drum filling, food plants. TTMA swivels, handle, counterbalance.

Materials: hardened carbon steel, 316L, aluminium
Seals: Buna, EPDM, FKM, PTFE, Baylast

Storz and European couplings

Storz ½"–8", aluminium (stainless steel and brass optional), 16 bar, symmetrical halves, caps, reducers, spanners. European compressor couplings DIN 3489 (⅜"–1", 10 bar), DIN 20039 clamps, claw couplings (25 bar). Flanged hose tails BS EN 14420-2 DN25–100, tank wagon couplings BS EN 14420-6 (DIN 28450) DN50–100.

Agricultural and water couplings

King BSP nipples, welded flanged hose tails, lugged couplings (½"–4"), GEKA brass couplings (⅜"–1½", 3 bar), foot valves, strainers, Agri-Lock (Bauer type) couplings 2"–8" — irrigation, mining slurry, vacuum, wastewater; hot-dip galvanised; allow up to 30° deflection at the joint.

Flow Boss washdown guns and ADS alarms

Washdown guns, trigger spray guns, nozzles — food and dairy industry, tank cleaning, pharmaceuticals, meat processing. ADS overfill alarms with probe — batch loading at terminals, overfill protection for tank trucks, rail tank cars and barges.

Clamps

DIXON clamps for securing hoses on stems: from worm-gear to multi-bolt and band systems.

Clamp range

Double-ear pinch clamps
Worm-gear SAE J1508: HS — 300 series stainless band, plated screw; HSS — all stainless
Miniature and quick-release worm-gear clamps
Single-bolt Super Clamp (carbon steel, grade 8.8 screw, zinc; stainless on request; 17–252 mm)
K-series band clamps and Ultra-Lok system (201 SS band, UL9000 tool, 360° seal)
Banding and buckles
Minsup claw safety clamps (SG iron)
Air King double-bolt clamps, TSC saddle clamps
Spiral clamps (clockwise/counter-clockwise) for convoluted hose

Grooved couplings

The grooved system tolerates deflection during installation and ground settlement, accommodates linear expansion without expansion joints and acts as coupling, union and extension at the same time. The groove is shallower than a thread and preserves pipe strength; only a socket wrench is needed for installation.

Ductile iron couplings

Series	Purpose	Parameters
Q — quick-release	quick connection/disconnection; a locking pin prevents accidental opening	1½"–6", 300 psi; equivalent to Victaulic 78
S, Style 11 — standard	construction, mining, process piping	1½"–12", up to 1000 psi; UL/FM
L, Style 10 — lightweight flexible	moderate pressure: mining, irrigation, compressed air; deflection up to 5%	UL/FM; equivalent to Victaulic 75
R, Style 5 — rigid	fire protection, plumbing, low-pressure air, drainage	galvanised version; UL/FM
Lite	stainless steel	—

Fittings, clamps and gaskets

Bolted grooved clamps for tank trucks (torque 20 ft-lb; black NBR, white NBR for dry food products, FKM-B −7…+149 °C, Baylast −29…+82 °C)
Flange (FA) and reducing (RA) adapters 2"–6"
90° and 45° elbows, tees 2"–8", 500 psi, UL/FM; caps
Gaskets: EPDM (green stripe, −30…+110 °C — water, dilute acids and alkalis, not for hydrocarbons), FKM (blue stripe, −25…+177 °C — oxidising acids, petroleum oils, hydraulic fluids), NBR (orange stripe — oils and hydrocarbons), white NBR (food)
GIBFV grooved butterfly valves 2"–8": 300 psi, 99 °C, epoxy-coated ductile iron body, EPDM-encapsulated disc

Instrumentation fittings

Leak-tight tube fittings for process, control and instrumentation lines. Interchangeable with Swagelok and Parker A-Lok.

Double-ferrule tube fittings

stainless steel 316

The double ferrule provides two sealing points. For high pressure and temperature, nitrogen, helium, flammable gases, hydraulics and corrosive media. Installation: cut the tube square, deburr, insert to the shoulder, tighten finger-tight, then 1¼ turns with a wrench.

Male and female connectors (tube ⅛"–1", NPT ⅛"–1")
Reducers, unions, bulkhead unions
Tees, elbows, caps, nuts, front and back ferrules

Temperature: −198…+648 °C
Safety: do not connect or disconnect under pressure; do not bleed pressure by loosening a nut

316 tube (OD)	Pressure, psi (by wall thickness)
¼"	4000–10 100
⅜"	3300–6600
½"	2600–6600
⅝"	2900–6000
¾"	2400–5700

Descriptions and specifications are given according to the manufacturers and may change. Please confirm parameters with our specialists before ordering.

Questions and answers

Frequently asked questions

Which cam & groove couplings are suitable for chemicals?

For most chemicals — 316 stainless steel or polypropylene; for highly aggressive media — Hastelloy C adapters. We select the gasket (NBR, FKM, EPDM, PTFE) using a chemical resistance chart.

Can you supply a hose with cam & groove couplings fitted?

Yes, we supply hoses assembled with DIXON fittings or with built-in vulcanised fittings.

How does EZ Boss-Lock differ from a standard cam & groove coupling?

EZ Boss-Lock cam arms lock automatically when closed and cannot open accidentally; to release, press the lever under your thumb.

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